Develop Bugs

Cell signal off for 2+ hours today, no LOS circle shown

Today for at least 2 hours from my living room, my E4GT had no service but didn't display the dreaded LOS signal. I found out about this by receiving an email telling me "your phone is going directly to voicemail for the last 2 hours, what gives?" Furious, I called this person immediately which went through as it normally should. While on the call I received 3 text messages, all delayed at least an hour.
I called sprint and they said there was no network outage, and that there is a known issue with LOS for this phone which has been discussed in this forum quite a bit. That said, I asked her what to do when your phone shows no LOS issue at all, and isn't receiving calls or texts. She had no solution other than "wait for samsung to release the fix."
Curious about my cell signal with E4GT, I used an app called "Network Signal Info" to log my phone's signal for 7 minutes just sitting on my coffee table. Astoundingly, my signal strength bounced around all the way from -106db (0 bars) to 5 bars (-76db). At one point, it even dropped from 5 bars to 0 bars. WTF!!!
I parsed the logs and created a crude graph which I am attaching. It covers 7 minutes of signal strength, logged every 10 seconds.
Has anyone else seen this happen? On my evo4g I never witnessed such a thing. I am wondering if my phone is effectively not receiving incoming calls every time it goes to 0 bars or -106db. Maybe someone else or multiple others can log what you see too? I hope this isn't normal for samsung devices....

A kmsg and logcat to go with this data would be even more enlightening.

I've had this happen as often as I've had the LOS circle show up. It will actually show full bars but no 3g signal, and when I try to send a text it just fails. It takes a reboot just as if the LOS circle was showing. I believe it's the same problem.
I've contacted Samsung and they blame it on Sprint, going so far as to say "you're carrier is known for bad coverage." It seems Sprint blames it on Samsung. Just what we need for a fast fix..... more BS from Sprint and Samsung.

k0nane said:
A kmsg and logcat to go with this data would be even more enlightening.
Click to expand...
Click to collapse
Googling this issue apparently samsung phones have a higher variability in cell signal than htc and motorola phones. However, dropping to -106db seems quite ridiculous when moments prior it was -76db.
I mostly posted to see if anyone else is experiencing this issue. Anyone, anyone?

jirafabo said:
I've had this happen as often as I've had the LOS circle show up. It will actually show full bars but no 3g signal, and when I try to send a text it just fails. It takes a reboot just as if the LOS circle was showing. I believe it's the same problem.
I've contacted Samsung and they blame it on Sprint, going so far as to say "you're carrier is known for bad coverage." It seems Sprint blames it on Samsung. Just what we need for a fast fix..... more BS from Sprint and Samsung.
Click to expand...
Click to collapse
See the thing is though, I didn't reboot or do anything. I just placed the call and the call went through just fine. I even had my gf call me 2 mins later and I received the call.
Its almost as if the cell signal is going to sleep and isn't being woken up when needed.

LxMxFxD said:
Curious about my cell signal with E4GT, I used an app called "Network Signal Info" to log my phone's signal for 7 minutes just sitting on my coffee table. Astoundingly, my signal strength bounced around all the way from -106db (0 bars) to 5 bars (-76db). At one point, it even dropped from 5 bars to 0 bars. WTF!!!
Click to expand...
Click to collapse
This happens to me all the time on my ET4G and two Nexus S 4g's I have. Sometimes they'll drop to -106 dBm and jump up to -76 dBm. It seems...weird. Sometimes they'll switch to roaming and jump up to -76 dBm too. Bars go from 0 to 5 seemingly randomly.

strung said:
This happens to me all the time on my ET4G and two Nexus S 4g's I have. Sometimes they'll drop to -106 dBm and jump up to -76 dBm. It seems...weird. Sometimes they'll switch to roaming and jump up to -76 dBm too. Bars go from 0 to 5 seemingly randomly.
Click to expand...
Click to collapse
Have you ever experienced what I posted about calls going straight to voicemail, possibly because your phone is at -106db when call is placed?

LxMxFxD said:
Have you ever experienced what I posted about calls going straight to voicemail, possibly because your phone is at -106db when call is placed?
Click to expand...
Click to collapse
Not that I'm aware of. I once had a call disconnect when I was on my Nexus S 4g and signal went to -110dB (usually it doesn't go that low...only -106). But that person was on AT&T and I get dropped calls with that person a lot, and I never had a dropped call with anybody else with that phone.
The only time ET4G has lost connection for me is twice randomly, and it showed the circle with the line through it in the signal bar.
I'm in Minnesota BTW.
EDIT: Just saw my nexus s go to -65dBm and then 1 second later -96dBm.

Happens all the time to me..and it happened all the time with my Evo 3D :/

Yeah. I've had the Los circle, couldn't make an outgoing call, then had a call come in. Who knows. They need to fix this crap.
Sent from my SPH-D710 using xda premium

Happens to me too. All we can do is wait for an official fix, it's not ROM/root/kernel related.
Transmission sent from a Galaxy
S II on XDA Premium.

Pheno.menon said:
Happens to me too. All we can do is wait for an official fix, it's not ROM/root/kernel related.
Transmission sent from a Galaxy
S II on XDA Premium.
Click to expand...
Click to collapse
Real question is: how long are we willing to wait?

Real problem is....many of us are already past the 14 day return.
It was much nicer when it was 30 days.

jfenton57 said:
Real problem is....many of us are already past the 14 day return.
It was much nicer when it was 30 days.
Click to expand...
Click to collapse
Just got mine last week. Had no idea this was an issue. Had it happen to me yesterday twice. Initially thought it was due to the ROM i just loaded. Now I find out that it isn't it at all. Now looking at the 3D or Photon. The lack of signal no matter the frequency will drive me insane. That is why I left T-Mo to begin with.

bradspace said:
Just got mine last week. Had no idea this was an issue. Had it happen to me yesterday twice. Initially thought it was due to the ROM i just loaded. Now I find out that it isn't it at all. Now looking at the 3D or Photon. The lack of signal no matter the frequency will drive me insane. That is why I left T-Mo to begin with.
Click to expand...
Click to collapse
No doubt. Im late to this party so i have till the 12th to return it. If this isnt fixed by then, its going back.
Sent from my SPH-D710 using XDA App

Pheno.menon said:
Happens to me too. All we can do is wait for an official fix, it's not ROM/root/kernel related.
Transmission sent from a Galaxy
S II on XDA Premium.
Click to expand...
Click to collapse
I know that I'm going to get flamed for this bit I beg to differ. I have had my e4gt since launch day without so much as a problem. I rooted it on 10-2 and had the LOS problem within 30 minutes of rooting my phone. I have also had the issue discussed in this thread.
Sent from my SPH-D710 using xda premium

Based on reading a lot of posts, IMO the bug is in the stock Samsung software but is triggered under a smaller set of circumstances like having poor signal and or switching to/from roaming (even if it didn't happen at your current location, but in transit)
IMO something changed in the custom kernels that exacerbates the problem so it happens in more circumstances than before. Just for illustrative purposes let's say it would have been triggered for 5% of peoples' situations with the stock kernel, with a custom kernel it might be triggered for 30 or 40% of the situations. I'm just totally making up those numbers of course.
Also the only real "stock" you can be assured of once you start flashing is this one:
http://forum.xda-developers.com/showthread.php?t=1273647
All the other ones, there is a chance it is a custom kernel even if you see the word "stock" because sometimes folks use the word lightly and it is really "stock+" or stock Android with a custom kernel. I'm not saying every release is using a custom kernel as I haven't tested every one. However, there are some releases I thought were stock, but when I unpacked the initramfs from the zImage, realized it wasn't. Coming from a different platform where recovery and os were kept completely separate, I didn't realize at first but the CWM Recovery actually uses a custom kernel and if you install CWM, you also end up getting that custom kernel for Android as well.

sfhub said:
Based on reading a lot of posts, IMO the bug is in the stock Samsung software but is triggered under a smaller set of circumstances like having poor signal and or switching to/from roaming (even if it didn't happen at your current location, but in transit)
IMO something changed in the custom kernels that exacerbates the problem so it happens in more circumstances than before. Just for illustrative purposes let's say it would have been triggered for 5% of peoples' situations with the stock kernel, with a custom kernel it might be triggered for 30 or 40% of the situations. I'm just totally making up those numbers of course.
Also the only real "stock" you can be assured of once you start flashing is this one:
http://forum.xda-developers.com/showthread.php?t=1273647
All the other ones, there is a chance it is a custom kernel even if you see the word "stock" because sometimes folks use the word lightly and it is really "stock+" or stock Android with a custom kernel. I'm not saying every release is using a custom kernel as I haven't tested every one. However, there are some releases I thought were stock, but when I unpacked the initramfs from the zImage, realized it wasn't. Coming from a different platform where recovery and os were kept completely separate, I didn't realize at first but the CWM Recovery actually uses a custom kernel and if you install CWM, you also end up getting that custom kernel for Android as well.
Click to expand...
Click to collapse
You make some valid points but this issue is not exclusively related to rooted/custom roms. That fact points to it being a software or hardware problem.
On top of that, I guess i'm the ONLY one that gets this issue without even seeing the LOS red circle icon. I wonder why this is.

LxMxFxD said:
You make some valid points but this issue is not exclusively related to rooted/custom roms. That fact points to it being a software or hardware problem.
On top of that, I guess i'm the ONLY one that gets this issue without even seeing the LOS red circle icon. I wonder why this is.
Click to expand...
Click to collapse
Red circle? Mines is white. But no, a few other people have mentioned having the problem without seeing the icon. I did on the first page of posts in this thread actually. I believe that it just hasn't switched over to the icon yet. That is what worries me more, it can be LOS for two hours and not have the icon, then the icon will appear. I've also RECEIVED A CALL while the icon for LOS was showing. Couldn't make an outgoing call about 10 seconds before that.
The bug obviously doesn't have anything to do with current service, but more switching. I believe when it makes that switch, from no service, or wifi, or 4g, etc, back to 4g, it hangs somehow. In fact, the phone is still getting fine service, it just shows the LOS icon, which makes the phone THINK it can't receive or send calls.
I don't know anything and these are just my hypothesii, but I'm past my 14 days now and the worse part about it is Sprint acts like they've never heard of the problem and so does Samsung! That's scary.

jirafabo said:
Red circle? Mines is white. But no, a few other people have mentioned having the problem without seeing the icon. I did on the first page of posts in this thread actually. I believe that it just hasn't switched over to the icon yet. That is what worries me more, it can be LOS for two hours and not have the icon, then the icon will appear. I've also RECEIVED A CALL while the icon for LOS was showing. Couldn't make an outgoing call about 10 seconds before that.
The bug obviously doesn't have anything to do with current service, but more switching. I believe when it makes that switch, from no service, or wifi, or 4g, etc, back to 4g, it hangs somehow. In fact, the phone is still getting fine service, it just shows the LOS icon, which makes the phone THINK it can't receive or send calls.
I don't know anything and these are just my hypothesii, but I'm past my 14 days now and the worse part about it is Sprint acts like they've never heard of the problem and so does Samsung! That's scary.
Click to expand...
Click to collapse
I don't know how customer service at sprint works or whatever, but when I called sprint yesterday about this issue the woman I spoke with told me within 15 seconds that there is a "known issue for a minority of these devices." She suggested exchanging it but since I got this phone from amazon for a reduced price, not really an option (I may never do that again). I was impressed that sprint was very upfront and at least offered a solution instead of saying "no, theres no problem at all" like others have reported. When I told her I would be returning the phone within the 14 day period if it isn't fixed by then she said she'd do the same thing, and that there was "no option" to extend the 14 day period to 30 days despite my offer for me to put up with this problem for a full 30 days.
In the end sprint's new policies are all for the iphone launch and hurting existing customers.

LOS update -- new development

I am currently tethering over a 4g connection, and my internet is working fine, BUT I have a complete LOS for the cell signal. I think this could be a very important fact because we should be able to know some things by the fact that WiMax is working while the cell signal is altogether lost.
Hopefully, with this info, a solution is a little closer at hand.

Ok...when people say LOS do they mean Loss Of Service? Or Loss Of Signal?
Because if its the latter, that sht aint that bad. But if its the former...I'm glad I don't have it.

ms79723 said:
Ok...when people say LOS do they mean Loss Of Service? Or Loss Of Signal?
Because if its the latter, that sht aint that bad. But if its the former...I'm glad I don't have it.
Click to expand...
Click to collapse
It is bad. People that get it have to reboot phone for it to come back and it kills battery life. Nit to mention missed calls and texts. It is a complete loss of service.
Sent From My Evo Killer!!!

Its 2 separate radios..

I had pandora going over 4g earlier for hours...but lost signal with a crossed out circle after about an hour. Pandora kept going but u couldn't make a phone call, ths.falls in line with the other poster. Im running eg30plus over latest 2.1 midnight.
Sent from my SPH-D710 using xda premium

As WhiteWidows stated, it's 2 different radios. The LOS people have posted over and over about is the ability to make/receive calls (which is what the OP posted about). The Wimax radio (4G) doesn't transmit phone calls. That's why you can do data on 4G and still make a call at the same time.
.....

Hi guys, this is one of my first posts but I've been a long time reader coming from the Evo 4G forums. I'm rooter using Zedomax v3 and experienced multiple LOS as well.
Last night I tried limiting the clock speed to 1ghz and setting the min at 400mhz. Strangly I now get slightly better reception and never had a LOS yet. Will continue to test out this theory and see if it's clock speed related.
I came about testing this since I ran mine at 1.6 for a while and not only would I get more LOS occurances, I would also get phone freezes lol. I tether and stream music a lot so wanted to keep it slightly underclocked to keep the temps down. Hope this helps as a temporary band aid for the LOS bug

It definitely makes sense that the two radios are separate...the point of my post was just to offer some more information to help figure out a fix.
If one radio fails while the other stays working, do we know that the problem is phone-related? Many posters have speculated that the issue may be on Sprint's end, so I wasn't sure if this info did anything to challenge or support that theory. Maybe it does nothing, though -- just throwing it out there!

Someone posted a log cat of a LOS. There's still some coding in the radio files that thinks there is a sim card. Says sim disconnected and result radio off
sent from my DAMN ET4G!!!!

Hopefully a solution is found soon, I've seen similar issues posted on various android forums. Androidforums, Sprint community and here. Wish I waited a bit to hear more user experiences....

Success100 said:
Someone posted a log cat of a LOS. There's still some coding in the radio files that thinks there is a sim card. Says sim disconnected and result radio off
sent from my DAMN ET4G!!!!
Click to expand...
Click to collapse
Has anyone tried editing the build prop to manually change the preferred network from wcdma to CDMA auto? Maybe that'd fix that issue

I have been on my current SGS2 stock out of the box for over a week now and have not had any LOS issues, or missing texts, or data not working, or missing phone calls, etc.....
I have been using wi-fi, 4G, 3G, have an Airaive, went to an area where there is no Sprint service and phone roamed fine and then went back to Sprint service when available.
I have been unable to replicate the LOS issue on my current phone through all possible ways of using it.
My first SGS2 was also fine until I rooted it which then gave me an LOS within 12 hours of doing so.
If someone has a another sure way to get an LOS, I am willing to try it on my stock, never rooted phone but I don't think there are any other situations I can try that I haven't already......

Time.I have went 3 days without a los then 2 in same day.It is all random

Serious WIFI & 4G issues PLEASE HELP GIVE INSIGHT

I really need some user commentary here as I have tried vigorously looking into my connectivity 'flimsy-ness' lately.
I have a GNex LTE version
this is fast...when it is fast.
However, wifi drops at times. and 4g if the reception is lost and reverts to 3g...it never goes back to 4g even in zones where it obviously exists, needing to be corrected manually.
It is very nerve wrecking. such an expensive phone to have such issues.
My question is, does anyone else have this? (im on 4.0.3)
should i return this and ask for a replacement? maybe this is defected.
Please help out as time is running out for a replacement at verizon
THANK YOU AND HAPPY NEW YEAR

I got hit by the Verizon outages and outside of that, I had some cell data connectivity issues twice. However, I have not had them since the last outage. (Also after changing ROMs both which are 4.0.2)
My father was visiting and got hit by what you describe and fixed it with a power cycle and hasn't said it occurred since.
How often does it occur for you?
To be on the safe side and so you don't miss your window, you may want to exchange.

A lot. The wifi is absolutely terrible. It does not stick. And turning the phone off with having put on the always on thru advance wifi settings it still turns off. I can not and will not risk it. Talked to Verizon made them express mail another gnex. I'd rather take my time and compare then go to the store and chuck this and receive another. One this is for sure. If the other one has the same problem. I will be very very sad. I love this phone (plus I have the unlimited plan..switched with my gf...and MAN Is it nice going over 10gb already)
I hope no one else has this problem. Really curious to know.
Sent from my Galaxy Nexus using xda premium

Seriously, no one offers any opinions??
Sent from my Galaxy Nexus using xda premium

Mine is solid. Holds wifi, holds 4G. The problem you are talking about has been brought up by others. Look around on this forum and you'll see it has talked about. People have had luck swapping out for another and others haven't. Looks like there are simply some out there with issues and you got one. They do not all have this issue. There is an OTA update coming with 4.0.3 soon that MAY help. You might just want to swap it out. If you do, don't leave the store until you know it's working.
Sent from my Galaxy Nexus using xda premium

Same thing happening with my wifi dropping connection all the. Gmail and whatsapp messages are always late, bloody frustrating:-[

Update: just received a new gnex. In the mail. Can confirm within the first three minutes of using it......same problem. Unbelievable
Sent from my Galaxy Nexus using xda premium

I have had the same router for the last 2 years, my nexus S never has had any sort of drops on wifi like this.
This is without a doubt a serious problem. I will be now doing more thorough testings with the 4g reception followed by the 4g dropping to 3g and seeing if it ever reverts.
I pray to god this is a software issue. but to be honest...having had all nexus's (nexii?) i have never had a reception issue or had an update that improved it...so im sort of freaking out now

I'm having this issue as well. It will help if you change the wifi policy to stay on always. Hit menu inside the wifi options.

I had the same issues and returned mine. I hope it gets fixed, because I loved everything else about the phone and want it back, but not at the expense of poor data reception.

on a NEW one that was sent...SAME PROBLEM.
ALREADY HAVE THE ALWAYS ON POLICY.
....this is some scary S*$T!!!!

I have had wifi issues with specific routers. I have 2 Linksys wrt 54g with latest firmware which frequently do not connect despite having a strong signal. I have a router in the micasavrde home automation controller that connects fine, all with wpa2 security. The wifi at work at 2 different sites works fine, but I am not sure what routers are being used. I think this is mainly a software issue with certain routers and may be fixable. Maybe we need a thread documenting people's experience with routers with no issues and routers that have problems .
Sent from my Galaxy Nexus using Tapatalk

Not receiving incoming calls. Big problem!!

Having a very strange problem with my S3. I've noticed it at home more than anywhere else but basically what happens is that if someone calls me, the phone doesn't ring on my end but I do get a voicemail notification after they've left a message. Then when I talk to them, they tell me that on their end my phone rang once or twice and then went straight to voicemail. And my phone doesn't show any missed calls so obviously, my phone never detected that there was an incoming call.
BTW, it doesn't happen all the time. Sometimes the calls come in just fine.
I've checked my signal strength and it's always between 3 and 5 bars. I've missed more calls than I can count because of this. Some of them were important calls.
And I don't have any problem making outgoing calls or using the data connection for anything.
Any idea what's going on?

BonesHopkins said:
Having a very strange problem with my S3. I've noticed it at home more than anywhere else but basically what happens is that if someone calls me, the phone doesn't ring on my end but I do get a voicemail notification after they've left a message. Then when I talk to them, they tell me that on their end my phone rang once or twice and then went straight to voicemail. And my phone doesn't show any missed calls so obviously, my phone never detected that there was an incoming call.
BTW, it doesn't happen all the time. Sometimes the calls come in just fine.
I've checked my signal strength and it's always between 3 and 5 bars. I've missed more calls than I can count because of this. Some of them were important calls.
And I don't have any problem making outgoing calls or using the data connection for anything.
Any idea what's going on?
Click to expand...
Click to collapse
Is it just certain contacts? You may have them set to go directly to voicemail by accident. I can't find where the list is in the phone though ahah, I can see how to add them to reject list though.
EDIT: Found it go to dial-pad and hit menu and then call settings and you will see call rejection see if you have anyone in there.

Halmo said:
Is it just certain contacts? You may have them set to go directly to voicemail by accident. I can't find where the list is in the phone though ahah, I can see how to add them to reject list though.
EDIT: Found it go to dial-pad and hit menu and then call settings and you will see call rejection see if you have anyone in there.
Click to expand...
Click to collapse
Nope, has nothing to do with who's calling. Sometimes a call from the same person will come through but ten minutes earlier it didn't.

Ive had similar problems in the past. Turned out the phone signal was going up and down. When it was up, calls came through. And down, well duh. Either way, try a new radio. Maybe it'll hold a signal better. I've heard people complaining about H1, but cant say either way myself. Just a suggestion.

Ends said:
Ive had similar problems in the past. Turned out the phone signal was going up and down. When it was up, calls came through. And down, well duh. Either way, try a new radio. Maybe it'll hold a signal better. I've heard people complaining about H1, but cant say either way myself. Just a suggestion.
Click to expand...
Click to collapse
how can I try a new radio?

BonesHopkins said:
how can I try a new radio?
Click to expand...
Click to collapse
there's a thread in development. some people call em modems, but its the same thing. Choice of 3 i think.

Having the exact same issue is your phone always in lte while this happens?
Sent from my htc_jewel

Andrew149 said:
Having the exact same issue is your phone always in lte while this happens?
Sent from my htc_jewel
Click to expand...
Click to collapse
As far as I can tell.

stay away from LH1 modem it's trash....

BonesHopkins said:
As far as I can tell.
Click to expand...
Click to collapse
Same here
Sent from my htc_jewel

BNaughty said:
stay away from LH1 modem it's trash....
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Click to collapse
My baseband version is UCLG1.
btw, I never had this problem with my iphone 3GS which I had for almost 3 years.
I have to say that even though on paper the S3 blows the iphone out of the water, for pure functionality without problems, the iphone is definitely way ahead of the S3. I'm pretty much stuck with it for the next two years but I have a feeling that if things stay more or less the same in the cellphone market, I'll probably be switching back to iphones after my contract is up. The S3 is very cool but I've just had way too many problems with it that I never had with my iphone. My iphone just..........worked. With my S3 calls don't come through, I'm constantly having to force stop apps so my battery doesn't drain all the time (and even then, half the time the battery drains like crazy no matter what), the visual voicemail is sketchy as hell and doesn't work right half the time, the data connection even when it shows a strong LTE signal is often very slow and times out a lot, and a bunch of other misc. annoyances that I never had with the iphone. I wouldn't say I'm sorry that I bought the phone because I wanted to try out the latest and greatest but when my friends and coworkers have asked me about it, I've been telling them they'll be better of waiting for the iphone 5. Sorry to vent but overall, after having it for almost two months, I've concluded that I'm very disappointed with this phone. Sure, I can do things with it that I couldn't do with the iphone but f*ck me, at least with the iphone I could do basic sh!t like receive phone calls and check my email without the connection timing out all the time.

BonesHopkins said:
My baseband version is UCLG1.
btw, I never had this problem with my iphone 3GS which I had for almost 3 years.
I have to say that even though on paper the S3 blows the iphone out of the water, for pure functionality without problems, the iphone is definitely way ahead of the S3. I'm pretty much stuck with it for the next two years but I have a feeling that if things stay more or less the same in the cellphone market, I'll probably be switching back to iphones after my contract is up. The S3 is very cool but I've just had way too many problems with it that I never had with my iphone. My iphone just..........worked. With my S3 calls don't come through, I'm constantly having to force stop apps so my battery doesn't drain all the time (and even then, half the time the battery drains like crazy no matter what), the visual voicemail is sketchy as hell and doesn't work right half the time, the data connection even when it shows a strong LTE signal is often very slow and times out a lot, and a bunch of other misc. annoyances that I never had with the iphone. I wouldn't say I'm sorry that I bought the phone because I wanted to try out the latest and greatest but when my friends and coworkers have asked me about it, I've been telling them they'll be better of waiting for the iphone 5. Sorry to vent but overall, after having it for almost two months, I've concluded that I'm very disappointed with this phone. Sure, I can do things with it that I couldn't do with the iphone but f*ck me, at least with the iphone I could do basic sh!t like receive phone calls and check my email without the connection timing out all the time.
Click to expand...
Click to collapse
All of the issues you listed are not really S3 specific because I have had none of them and have had my phone since release. Apart from the video voicemail which I can't comment on because I have never used.

BonesHopkins said:
My baseband version is UCLG1.
btw, I never had this problem with my iphone 3GS which I had for almost 3 years.
.
Click to expand...
Click to collapse
I've had my I747 since release in June and not experienced any of these issues. Over the years with Blackberrys and the Galaxies I found most problems result from variances in the network. Signal strength, carrier software and even where the phone is in the house. I dislike much about the iPhone (I do have a 4th gen iPod) and much prefer the openness of the Android OS and NO iTunes. Hope things with S3 get better for you.

Still having the problem. It seems to happen most often when I have LTE enabled. I disabled it using the method mentioned in another thread where you remove the sim then enter a code which takes you to the menu where you can choose what to use.
When I had LTE disabled, it didn't seem to miss as many calls. But when LTE is on, I miss a crapload of calls. I'd leave LTE off but for some reason it keeps re-enabling itself every few days so it's turning into a massive pain in the ass.
Any suggestions?

I have the same issue as you, but I'm on Wind Mobile. This issue happens intermittently anywhere between 1 to 2 days, my phone will stop being able to receive calls. It's very frustrating and Samsung is really no help. After two attempts on trying to "repair" my phone, they have failed each time. The only thing they did was they ran a "RF Test" and everything passed, they said. So they re-flash my phone with the same ROM - again and again.. I told them, "This is my second time sending it in, and you guys are redo'ing the same steps as the first repair. You don't need to be a rocket scientist to know this, but wouldn't you think when you send me back the phone - the issue is still going to be there?!" ... And sure enough, when I got the phone back, I was still unable to receive calls..
So I took matters into my own hands - I flashed it with a older release stock rom and I tested it for 2 weeks, and it was able to receive calls. When I flashed with the earlier release, it also flashed the baseband. Either way, I should not be prevented from using the up to date software! This is a Samsung issue but if you ever tried dealing with them over the phone, it's painful. They said they would send me a REFURB replacement - (believe me, I tried fighting for a brand new phone, since I paid for a brand new phone and this issue came straight out of the box - it's not even my fault to begin with!) it's been 3 weeks and I still don't see any phone replacement nor did I receive any mails from Samsung.
Btw, Galaxy S3 is the phone I have.
If you discover a permanent fix for this issue, please let me know. I've been searching but no luck.
Thanks!

UPDATE: it's been over a month and I still don't see any phone replacement nor did I receive any mails from Samsung. So I called Samsung today after a month and 2 weeks. They said my replacement have been cancelled. First they said it's approved and requested me to send in my receipt for the phone. I had done the the very moment I hung up the phone from when they told me my replacement was approved (that was over a month ago). They want me to sent it in again to Samsung so they can "test". This is just ridiculous and getting out of hand. Does ANYONE have a fix for this????
Other forums are saying this is a wide spread issue...

are u missing imei, or just the problem you descibe... try flashing the latest modem... maybe yell at it while it flashes...

Nope, just having the issue I described... IMEI is exist and is valid.

aftershocks said:
Nope, just having the issue I described... IMEI is exist and is valid.
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Click to collapse
There's some newer modems out you could try but it still sounds like hardware...
Not sent from your phone...

Sorry for the late entry here but I'm also having the issue. aftershocks, and anyone else having this issue, open battery stats - what does your "mobile network signal" bar look like? Mine is mostly tan except for when I make calls, which then it goes green. I also have an HTC One X (AT&T model) and the bar's mostly green on the HOX.
I've flashed back to the original modem (UCLEM) to see if that helps and I'll move forward from there if not. UCDLK3 was the modem I was originally on when I noticed the missed calls. Here's the thread with radios: http://forum.xda-developers.com/showthread.php?t=1831898.

Defective Radio?

I have been having a lot of problems with my new honey, namely in the signal department! I went through a whole thing with it right after activation...it worked, then didn't, then did...etc. A chat session, phone call, & 2 trip to the actual store (all in 1 day!) resulted in them doing a factory reset and sending me on my looney way. It seemed to have helped, for about a day and a half. Now it is dropping signal again! It seems to do so, sometimes, when I have the wifi on. But then sometimes not (I'm not sure if wifi is culprit or coincidence.)
The ATT store employees said I may have changed a setting (I'm sure I didn't as I don't know of any setting that would even cause that!) and also "explained" my signal will naturally fluctuate...(They think I am an idiot, obviously and of course the phone was working fine when I was there...duh!) They also gave me a new sim card.
I *really* want to love this phone! But I'm finding it frustratingly undependable. Texts won't send when I need them to. I'm not getting them either, always. Voice is hit or miss when it drops (sometimes it works, sometimes not.) I have ALSO noticed the signal is not as strong as my old beloved Cappy. That thing was a horse (and I'm thinking of going back to it if this new one doesn't wise up!) Seriously, $300 bucks for a brand new phone & it can't keep a proper signal?
Is it the radio? Is it the software (still 100% stock, unrooted)? Should I make them give me a new one? What if it doesn't work, either? Flashing it to fix the issue is fine for me, but I've been holding out for multi-view before I get flash-crazy. lol Not to mention I may have to return it so better to not mess with it [yet]. I'm very frustrated & tired of getting looked upon like I'm the typical woman idiot who is not as smart as her new smartphone!!! I am NOT imagining it!!!

k.babymamma said:
I have been having a lot of problems with my new honey, namely in the signal department! I went through a whole thing with it right after activation...it worked, then didn't, then did...etc. A chat session, phone call, & 2 trip to the actual store (all in 1 day!) resulted in them doing a factory reset and sending me on my looney way. It seemed to have helped, for about a day and a half. Now it is dropping signal again! It seems to do so, sometimes, when I have the wifi on. But then sometimes not (I'm not sure if wifi is culprit or coincidence.)
The ATT store employees said I may have changed a setting (I'm sure I didn't as I don't know of any setting that would even cause that!) and also "explained" my signal will naturally fluctuate...(They think I am an idiot, obviously and of course the phone was working fine when I was there...duh!) They also gave me a new sim card.
I *really* want to love this phone! But I'm finding it frustratingly undependable. Texts won't send when I need them to. I'm not getting them either, always. Voice is hit or miss when it drops (sometimes it works, sometimes not.) I have ALSO noticed the signal is not as strong as my old beloved Cappy. That thing was a horse (and I'm thinking of going back to it if this new one doesn't wise up!) Seriously, $300 bucks for a brand new phone & it can't keep a proper signal?
Is it the radio? Is it the software (still 100% stock, unrooted)? Should I make them give me a new one? What if it doesn't work, either? Flashing it to fix the issue is fine for me, but I've been holding out for multi-view before I get flash-crazy. lol Not to mention I may have to return it so better to not mess with it [yet]. I'm very frustrated & tired of getting looked upon like I'm the typical woman idiot who is not as smart as her new smartphone!!! I am NOT imagining it!!!
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Click to collapse
I would definitely take it back and make them give you a new one.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

Sounds like your antennae is shorting out or something like it wasn't soldered properly or the cable isn't secure. Would explain why WiFi affects it. I'd go there and demand a replacement and if they don't wanna budge your within 30 day no questions return. Then go to a diff store and get a new one. I really don't see it being a software issue.
Sent from my SAMSUNG-SGH-I317 using xda premium

cjsspape said:
Sounds like your antennae is shorting out or something like it wasn't soldered properly or the cable isn't secure. Would explain why WiFi affects it. I'd go there and demand a replacement and if they don't wanna budge your within 30 day no questions return. Then go to a diff store and get a new one. I really don't see it being a software issue.
Sent from my SAMSUNG-SGH-I317 using xda premium
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Click to collapse
Is it possible that whatever the problem was, it miraculously resolved itself? I had it drop signal two more times since this post, then nothing since. It's been working perfectly. I hate to keep it if it might arise again but I hate to return it if it was some weird fluke thing.
This may or may not be related to the above problem: has anyone noticed their reception is not as good as on a previous device? I had a Cappy and it always got great signal. I noticed this one is not as strong in the same places I previously visited with my old phone. Although admittedly, it seems to be improving. Does that even make sense or is even possible? Just like me, my phone has to be the goofball of the bunch!

k.babymamma said:
Is it possible that whatever the problem was, it miraculously resolved itself? I had it drop signal two more times since this post, then nothing since. It's been working perfectly. I hate to keep it if it might arise again but I hate to return it if it was some weird fluke thing.
This may or may not be related to the above problem: has anyone noticed their reception is not as good as on a previous device? I had a Cappy and it always got great signal. I noticed this one is not as strong in the same places I previously visited with my old phone. Although admittedly, it seems to be improving. Does that even make sense or is even possible? Just like me, my phone has to be the goofball of the bunch!
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Click to collapse
Haha I'm glad its working better but I still think it may be hardware related. I get better signal now with this device then my sIII or my note before it. Have ya done anything to your phone at all? Root mod etc?
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cjsspape said:
Haha I'm glad its working better but I still think it may be hardware related. I get better signal now with this device then my sIII or my note before it. Have ya done anything to your phone at all? Root mod etc?
Sent from my SAMSUNG-SGH-I317 using xda premium
Click to expand...
Click to collapse
Nope. I've done nothing because I'm having this returning debate. lol I'm itching to though!
This is classic "my car doesn't work so take it to the garage then it works fine and they will make fun of you" If I do return it what do I say? It is documented about my "troubles" as per the ATT phone rep. Though if I can't reproduce the problem they're just going to send me on my way, I'm afraid.

k.babymamma said:
Nope. I've done nothing because I'm having this returning debate. lol I'm itching to though!
This is classic "my car doesn't work so take it to the garage then it works fine and they will make fun of you" If I do return it what do I say? It is documented about my "troubles" as per the ATT phone rep. Though if I can't reproduce the problem they're just going to send me on my way, I'm afraid.
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Click to collapse
With enough "negotiating" they'll take it back haha. Plus are you still within your no ask return window? Just explain how its sporatic but annoying to the point its not functional for reliable use and they should do something within their power to help ya out
Sent from my SAMSUNG-SGH-I317 using xda premium

k.babymamma said:
Nope. I've done nothing because I'm having this returning debate. lol I'm itching to though!
This is classic "my car doesn't work so take it to the garage then it works fine and they will make fun of you" If I do return it what do I say? It is documented about my "troubles" as per the ATT phone rep. Though if I can't reproduce the problem they're just going to send me on my way, I'm afraid.
Click to expand...
Click to collapse
You spent enough money on the device, you should be absolutely happy with it, not apprehensive. If you wait past the return date, it's going to sit in the pit of your stomach for 20 months and ruin your enjoyment of it until you can upgrade again. Not worth it. Smile your brightest smile, walk into the store, very nicely tell them that you've had multiple issues and the AT&T phone reps said to go in and ask for an exchange. That's it. They're going to count on you being intimidated and going away. Smile, be nice, and don't be intimidated.
If they say you have to reproduce the problem, invite them to spend the day with you. The Note 2 is amazing and you shouldn't settle if you believe your hardware is having problems.

UserNamer said:
You spent enough money on the device, you should be absolutely happy with it, not apprehensive. If you wait past the return date, it's going to sit in the pit of your stomach for 20 months and ruin your enjoyment of it until you can upgrade again. Not worth it. Smile your brightest smile, walk into the store, very nicely tell them that you've had multiple issues and the AT&T phone reps said to go in and ask for an exchange. That's it. They're going to count on you being intimidated and going away. Smile, be nice, and don't be intimidated.
If they say you have to reproduce the problem, invite them to spend the day with you. The Note 2 is amazing and you shouldn't settle if you believe your hardware is having problems.
Click to expand...
Click to collapse
Yes. I have decided to take it in later today, as my 14 days is up on Friday. I hope they have stock of them. Anyhow...I have another question. If a phone is sitting still with no movement (and the weather is good, lol) will there be variations in signal strength? I get 3 bars with 4G showing, then it drops to one tiny bar. Sometimes the 4G disappears then reappears. The it will go back up to 4 bars. All in the course 5 minutes! I do realize signal will vary with movement but will it if your phone is just sitting there?
I am trying to experiment a little. I just realized/remembered that I had (uneventfully) dropped my phone (not hard, in-case) about the same time as my dropped signal problem pretty much resolved itself. So then I was like, hmm, maybe there IS something loose inside. I've tried gently shaking/jarring it here on my desk, coincidentally with the bars dropping back to just 1 as a result. But then again it may be coincidental as they are seeming to waiver A LOT. I just wondered if it is normal.
I never really stared at my old phone (Galaxy1) here at my desk but I'm almost positive it always had more than 1 bar at this same location and I never noticed it waiver like this one. But like I said I never had to make myself stare at it to check, either! lol Just wondering if someone knows a little more about cellphone signal 101 than me.

I have the issue of no 4G HSPA+ but I can get a strong LTE signal when in an LTE reception area. I'm wondering if you are in an LTE area and can get LTE? Where are you located?
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I have noticed problems with my GN2 as well. Mine shows I have signal but my data stalls or doesn't seem to work as it should. I'm in an area where there shouldn't be any problems. Only seems to happen in non LTE areas. Whenever I have LTE signal this thing is blazing fast.
Sent from my Nexus 7 using XDA Premium HD app

Update: Took the phone in. Basically, they had never heard of the issue with this phone. But...I walked away with a replacement. So far so good though I've had it only a few hours. The girl was very nice & explained even though I was borderline limit she would take care of me. I told her I received it Fri the 9th but she said they were basing the 14 days on the 7th! I said I didn't physically have it till the 9th! Jeeze. Moot point since she was going to take care of it anyhow but it just concerned me how (corporate) att could chop 2 days of my in-store return time!
So no, I'm not in LTE land, unfortunately. 3g H+ & E only though I can't complain about the coverage or speed. Good enough for me 4 sure.
The signal bars waivered quite a bit even while in the store. They said while some fluctuation is normal it shouldn't be as much as it was doing especially with the close proximity of the tower & good weather and especially while just sitting on the counter.
I downloaded the free app "No Signal Alert" from the Play Store. In just a few hours it recorded lost signal 4 times! (In a very good coverage area) [my first phone b4 the exchange] Consider using it if you want to see if you are losing signal like I was. Handy app!
Hopefully this is a good one. I know it sounds goofy but this phone seems to even move faster than the other. Weird. It will be interesting to hear if anyone else is having this problem. Maybe there was a bad batch of them or something? Like the Nexus I read about & their signal problems.
Sent from my awesome gn2 jesusphone using xda app-developers app

Haha im glad that they helped ya! No its not goofy or silly to think that one phones faster then another because no two phones are alike. The silicone chips are very different and performance can very greatly. I had an s3 that wouldnt take custom kernels to save its life but I got it replaced after a two year old and a toilet incident haha and that one took even the most abusive settings in stride!
Sent from my SAMSUNG-SGH-I317 using xda premium

I have a similar situation with mine. LTE will be working fine but then I notice that once I connect to my home wifi and then either leave my wifi range or turn off wifi the LTE icon will show in the status bar and it will show that it's sending and receiving data but Web pages will stall and never load, Play Store will timeout, and SpeedTest.net will start up but the needle will freeze about 1/8 of the way up indefinitely. I've toggled data at this point but it never fixes it, I have to restart the phone at which point LTE works perfectly but once I get back on my wifi the cycle will repeat, this has happened reliably for about the past week.
Do you all think I have a defective radio or am I missing something? I'm still within my return Window and will probably swap it Friday.
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williamsjscott said:
I have a similar situation with mine. LTE will be working fine but then I notice that once I connect to my home wifi and then either leave my wifi range or turn off wifi the LTE icon will show in the status bar and it will show that it's sending and receiving data but Web pages will stall and never load, Play Store will timeout, and SpeedTest.net will start up but the needle will freeze about 1/8 of the way up indefinitely. I've toggled data at this point but it never fixes it, I have to restart the phone at which point LTE works perfectly but once I get back on my wifi the cycle will repeat, this has happened reliably for about the past week.
Do you all think I have a defective radio or am I missing something? I'm still within my return Window and will probably swap it Friday.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2
Click to expand...
Click to collapse
Yea my wifi lte transfer is always spot on so something may be wrong
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williamsjscott said:
I have a similar situation with mine. LTE will be working fine but then I notice that once I connect to my home wifi and then either leave my wifi range or turn off wifi the LTE icon will show in the status bar and it will show that it's sending and receiving data but Web pages will stall and never load, Play Store will timeout, and SpeedTest.net will start up but the needle will freeze about 1/8 of the way up indefinitely. I've toggled data at this point but it never fixes it, I have to restart the phone at which point LTE works perfectly but once I get back on my wifi the cycle will repeat, this has happened reliably for about the past week.
Do you all think I have a defective radio or am I missing something? I'm still within my return Window and will probably swap it Friday.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2
Click to expand...
Click to collapse
Sounds very similar to how mine is acting. I'm wondering if it is the ATT smart WiFi app causing the problem. Shows data incoming and outgoing but stalls.
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kkl0wn said:
Sounds very similar to how mine is acting. I'm wondering if it is the ATT smart WiFi app causing the problem. Shows data incoming and outgoing but stalls.
Sent from my Nexus 7 using XDA Premium HD app
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Click to collapse
That's exactly how it's acting for me. I just now disabled the AT&T Smart WiFi app and after a quick restart and toggle test there was no problems, but I'm not sure if the problem will only pop up after I've been on wifi for a while. I'm going to see if it keeps doing it tomorrow.
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Disabling Smart WiFi appeared to fix the problem.
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What I noticed today is that when this same issue happens, with 4G icon and wifi icon both active, it occurs after I manually check for a firmware update within the system settings. The 4G icon doesn't go away until I reset the phone.
Also I manually deleted the all the AT&T boat ware apps before this was happening so the smart wifi app is not causing this for me.
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Weird, if you get the issue and don't have the Smart WiFi app then it must be something else and it was coincidence that it worked normal for me today. I've only checked for firmware once (when I first got my phone) so it must be something else causing it. I'm hoping the multi view firmware will also have a fix for it.
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