Develop Bugs

Microphone cutting out mid call

Edit: please see this Google issue tracker post and star it to get Google's attention!
http://code.google.com/p/android/issues/detail?id=24019
I've had it happen 3 times now that I'll be on a call for a number of minutes and all of a sudden the person I'm talking to won't hear me any more. To be fair, I've been talking to the same person, and each time it's been an extended call (5+ minutes). It happened on Saturday, twice. Since then, I have wiped data/cache and flashed a custom rom. It happened again this evening, right around 10 minutes into the call.
The microphone doesn't come back. I tried turning on speaker phone and muting/unmuting my mic, but it won't bring the microphone back. Like I said, this is the same person I've spoken to each time, however, I've been speaking with them often (with their current phone) on my previous phone and never had this issue, so I'm not sure if it's their phone's problem. I spoke with someone else for 30+ minutes on Sunday and didn't have this happen.
To remedy the situation, I just hang up and call back and it works fine, until it happens again.
I'm confused. Is my phone problematic or is it a software bug or is it the other person's phone? Is anyone else experiencing this?
EDIT: Just thought I'd mention I'm on VZW LTE/CDMA.

Thought I was the only one with this problem. Had the exact same thing happen to me talking with my girlfriend the past two nights. Think I'm going to blow away everything and go back to stock 4.0.2. I think it's an app that's misbehaving.

Please report back with your findings.

I've had the same thing happen to me. It has happened the most often when talking to my gf who has an iphone 4 on ATT, but it also happened when I was trying to make dinner reservations at a restaurant that was using a landline.
I am running stock 4.0.2.
If anyone has any suggestions, I'm all ears.

This was a common problem on the Samsung Droid Charge, which uses the same questionable Via baseband modem for voice calls. The earlier Charge Froyo firmware had all kinds of voice issues: 1) outgoing voice drop. 2) systematic cut in/out. 3) garbled robot voice quality. 4) loud ear hurting static. Since the latest Charge firmware EP4 (gingerbread), all issues except occasional robot voice are fixed. The phone is now usable where it was laughable before. The loud static may have been linked to certain phones / hardware rather than firmware.
Hopefully Samsung can incorporate the Charge fixes into the Nexus.
Hopefully Samsung stops using 3rd rate Via chips.

Thanks for the input. Nice to have an idea of what's going on.
Sent from my Galaxy Nexus using Tapatalk

Hey I have this happen about once a day sometimes more and doesnt matter who im talking to it can happen to anyone at anytime. This is very annoying seems like the smarter and more advance these phones get the crappier the actual phone call part of it gets. I think they forget cell phones primarily are for phone calls

Ironically 2 of my calls today complained i was dropping out. But i had full signal. My phone is brand new so these are the only calls ive really made so far.

Reply I had the same thing happening to mine. I was actually on the phone with VZW Level 2 Tech support when the mic went dead. It happened twice while talking to the same agent. She said it sounded like a clicking noise on her end. She then told me to take the phone back to the store.
I went in and got it swapped for a new one and had to return that one the same day because the ear piece sounded blown. Now on my 3rd Galaxy Nexus. The mic issue hasn't happened yet but I just got this one yesterday.... I'll report back if it happens again.
Sent from my Galaxy Nexus using xda premium

I don't think this is a hardware problem. I've had this happen on all three GNs I've had. This last time I was talking on my jawbone headset. I tried switching to the phone mike and speaker phone it did not make a difference. I also tried muting and unmuting. How do we get Samsung to acknowledge this problem?

This happened to me a couple of times also, stock 4.0.2

I have the same problem on stock 4.0.2 and on RevolutionHD 2.1.2. I spent an hour or so with level 2 tech support. I was told that I was the only person to report this issue. They suggested that I change it out or switch to a different phone. My Son-in-Law has the Nexus as well and also has the same issue. I guess I have till 1/15/2012 to make up my mind.

I am having the exact same issues. I will say it lasts about 3-5mins in the call then no one can hear me, and I have to call the people back. I love my Nexus!! I am so glad that I am not the only one having this issue. Edit: I have gone on the VZW Tech Forums and informed them of my problem, and pointed to this thread. I am hoping I hear something from VZW. Maybe if we can get more people to post on the thread over there, VZW and Samsung will see there is a problem. Heres the link h t t p ://community.vzw.com/t5/4G-Discussion/No-One-Can-Hear-Me-After-3-5mins/td-p/762556 (sorry had to space the http part since I am new.

I've had this issue too. Sounds like a resonably easy thing to fix with software.
Sent from my Xoom using xda premium

Has anybody had this happen on 4.0.3? How about on the GSM GNex? Just trying to narrow it down.

Exact same problem here. I called Verizon and they sent out a new one. But after a few calls longer than 5 minutes the microphone went out and I had to call back. I reused the same SIM card. Could that be a potential solution?
Sent from my Galaxy Nexus using Tapatalk

I made tons of test calls today and not a single issue on my GSM version. I only experienced this cut out issue the first day so guess I'm good for now...

I've had this happen on me twice running a 4.03 Custom Rom. Happened about 15 minutes into each call

I believe it to be hardware.

Why do you think its hardware?
Sent from my Galaxy Nexus using Tapatalk

High pitch squeal / squeek / fax tones during phone calls

Anybody running into this? I bought a GNex about 2 weeks ago and when on a call I get a high pitch squeal randomly. Loud... like pull the handset from my head loud. The person on the other end doesn't hear it. I called VZW several times and they say they haven't heard of this. My wife got the same phone when I did and it happens to her, too. My twin got the phone about a week later and his is fine. I took the phone in to VZW earlier this week and they mailed me a replacement... it does it also. I changed the ROM to the Open Kang ROM to see if it might be a software thing... still doing it. Very frustrating. It happens when sitting in my office on 4G or 3G, when driving, etc... no real rhyme or reason that I've been able to figure out. The squeal happens every 3-15 minutes without any real pattern. I don't see any notifications or anything that are new after the squeal takes place.
If anybody else is experiencing this can you post? If you fixed please advise! Thanks!!!

aharper said:
Anybody running into this? I bought a GNex about 2 weeks ago and when on a call I get a high pitch squeal randomly. Loud... like pull the handset from my head loud. The person on the other end doesn't hear it. I called VZW several times and they say they haven't heard of this. My wife got the same phone when I did and it happens to her, too. My twin got the phone about a week later and his is fine. I took the phone in to VZW earlier this week and they mailed me a replacement... it does it also. I changed the ROM to the Open Kang ROM to see if it might be a software thing... still doing it. Very frustrating. It happens when sitting in my office on 4G or 3G, when driving, etc... no real rhyme or reason that I've been able to figure out. The squeal happens every 3-15 minutes without any real pattern. I don't see any notifications or anything that are new after the squeal takes place.
If anybody else is experiencing this can you post? If you fixed please advise! Thanks!!!
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Yes, that happened to me when i was running stock at first too. Once i flashed AOKP 4.0.3 and franco's kernel, I haven't had that problem at all. It was REALLY annoying, sporadic, no rhyme or reason. It was also waaayyy louder than i thought the speaker could ever get ironicly enough. Also dont know if the new radios might have helped too, I flashed those separately because they aren't included on the 4.0.3 roms. Hope it helps =\

I called Verizon about this again today. I had enough trouble with one device that they sent me a second device. The second device does it too. Very frustrating. The device is also much slower than my old Incredible. I officially hate this device. Should be faster with a solid connection to 4G. I'm going to see what is necessary for VZW to somehow get me out of this device and into anything different. Hell, at this point I'm ok with an iPhone... anything but this.

I'm going to use this thread to track what I've been doing in the hopes that it can help others if they are dealing with VZW with this issue.
Dec/11 - bought the GNex new. Had the squealing problems and talked with the store I bought it from. They thought it was an app and suggested I make changes to my apps. I did that for a week or so and they finally exchanged the phone for new.
Jan/12 - new device arrives. Same trouble. I dropped the stock OS and went to the OKP OS. Same trouble. Figure I'll take notes for vzw and see if I can figure it out. What I found...
Seems to happen when talking with other mobile users, never to a land line. Later narrowed it down to only other vzw users, did not happen when talking to at&t users. Later narrowed it down that it only happens to other vzw users who are using the GNex device as well.
Called vzw last week after growing frustrated again. They had me do some troubleshooting on the device and re-provisioned my account. Same trouble. They sent me another new device. I put this device back to stock and relocked.
Feb/12 - 3rd device arrives. Stock OS, no apps installed. Had the same problem that same day. Called vzw the next morning and they had me put the device in safe mode so that they could determine if the problem was hardware or software. If you didn't know there was a safe mode now you know. Boot holding the down vol button until you're in the OS. Immediately had the same problem.
Called vzw back and demanded a different device. They told me they couldn't change the device because I was outside of 14 days. No kidding, I wouldn't be outside of 14 days if vzw hadn't been asking me to do all of this troubleshooting. I finally agree to pay full retail price if they credit my account for the past 3 months of troubleshooting. Nope. They make me upgrade eligible and I went a completely different direction to an iPhone hoping that this stupid squeal would be gone. I'll sell the GNex for close to retail on Craigslist at this point.
Mar/12 - iPhone is running for a day and I talk with my wife (GNex device). The squeal is there but MUCH SOFTER in volume. I will talk with my brother as I leave work tonight because I always have trouble with him on the phone. Hopefully this will help me know for sure.
What I think I'm finding is that it's not necessarily my GNex that had a problem... it's the reception from OTHER GNex users that is causing me the trouble. My wife has complained about the problem as well but at a much lesser frequency and only when on the phone with me. We don't talk on the phone that much. The curious piece is that my brother doesn't have the problem.
More to follow as I figure out for sure whether or not the iPhone has the same problem. If so then it's not my device, nevermind that I'm on my 4th device in 3 months. VZW has been entirely worthless through this process and has made me fight the entire way. Their customer service is horrible and the managers that I have been talking to should be fired. I can't believe they allow managers to talk with customers the way some of these guys do (especially this last Paul LaFranky dude (not sure about his last name)).

So I just came across this thread while doing my normal daily browsing here and find it interesting.
My nephew who has a SGSII here in east coast Canada on Bell txt'ed me earlier to ask if I ever get a "crazy squeal noise from your phone when you're trying to make/receive a call".
It's not all the time. He said it happened about 4 times in the past few months and it's only a land line. He doesn't make a lot of voice calls, mainly the 1 land line (work). When it happens, he hangs up and calls back and it's fine.
It may be completely unrelated to your issue. He's on stock gingerbread.
Anyway, thanks for posting the details and keeping record, i'll follow this for sure.

I have now had two calls today with the high pitch noise. At this point it is def not my device as I'm now on an iPhone. Good news is I can go back to the gnex. Bad news is that I'm all but certain that gnex devices are somehow SENDING these tones. With as unhelpful as vzw has been I'm beginning to think I may simply need to call those people less often... So annoying. I'll call vzw in the morning and see what they have to say. Ugh.

Mine does it too. It is my second one as my first stopped working on 3g so they replaced it. The first phone did it too. I just live with it.... I dont talk on phone much.

I get them as well with the GN, but I was also getting it with my thunderbolt from time to time.

My brother is upgrading to 4.0.4 today and will drop a new OS on his GNex. Once he does that I have asked him to call me to chat for a little bit. It would be great if that takes care of the problem! Fingers crossed. If that doesn't solve the problem I will call VZW with the additional info. If it does then I'll go back to the GNex and sell this new iPhone.

Update - called VZW to have my account updated with the latest notes. While on the phone the lady I spoke with acknowledged that there is a KNOWN ISSUE FOR THIS PROBLEM with Samsung devices. The devices that she said are affected are the Galaxy Nexus, the Charge and the Stratosphere. Samsung is supposedly working on an update that will address the problem. No ETA for that update.
I sure wish someone had told me about this sometime over the past 3 months of troubleshooting... it would have saved me the money for the iPhone as well as the hassle with vzw. Hopefully someone here will get some good out of this.

How odd. I have a VZW Nexus, but have not encountered this issue. I don't often make calls, but they sound fine when I do.

The problem is on the other end for the person you are talking to... they will hear a high pitch squeal from time to time. Mine would do it as often as every 10-15 seconds or so or could be as little as every half hour (or not at all depending on length of call).
I have talked with my brother a couple times today after he upgraded to 4.0.4 and haven't had the problem at all. I wonder if that update includes some work to fix this. ??

My Samsung Galaxy Nexus Nightmare

Hey guys ever since getting this phone ive been having to keep getting replacements for it and it still havent fixed the various problems that ive had with this phone.
1. microphone will cut out during calls and sound will stop working.
This problem has been resolved from getting a replacement through verizon's warranty program.
After receiving my replacement however, i am now getting the signal drop issue where the only way for the phone to work is putting it in CDMA mode. Ive researched online and found that various other people have been experiencing the same problem with their galaxy nexus. So i go to the store to order another replacement.
After receiving my 3rd replacement, still no luck. This phone is still experiencing the same problem has the last where the signal would randomly keep dropping. So i go back into the store and decide to switch out the sim card for the phone and order another replacement.
The 4th replacement comes in and to still no surprise the signal keeps dropping off. I found that both korean made phones and chinese made phones are experiencing the same problem. Ive changed my SIM card, rooted and unrooted, tried various roms, updated to the unofficial 4.1 jelly bean update and still nothing fixes this damn radio problem.
Im so fed up with this phone but if anyone has any suggestions it would be greatly appreciated as i have no idea how to get a working galaxy nexus and have never experienced a working one still. I would KILL to get a phone that actually keeps a 4g signal ><

This should not be in development.

Oi...
I don't quite understand the purpose of these threads...
For reference, this is the development forum despite the Verizon designation. Releases only here.
Sent from my Galaxy Nexus using Tapatalk 2

dmeadows013 said:
This should not be in development.
Click to expand...
Click to collapse
oops sorry will move my post to general.

Can't find download links for your rom.
oh wait...

There is nothing you can do except to keep getting replacements. No software will fix your issue at this time.
I just received a replacement yesterday as my phone's radios, voice and data would disconnect and only a reboot would fix it. Today I made it through the day without it happening once on my replacement. Still not convinced it is the device though until I go a few days without it happening.
If it happens with this one, I would say it is more of software radio issue and not the physical device and Samsung needs to do something about it.
So, I will see how it goes over the next few days. If this one continues to work, then it could possibly be the device. I My first GNEX though would not keep 4G for more then a minute and jump off, then on, then 3G, then 4G. To me that was the device. My next one would just lose it after a few hours, otherwise it was fine....
Let's hope the 3rd one is a charm.

Try updating the radio and is it possible you live in a area where signal is poor. I haven't had an issue at all with my nexus
Sent from my Galaxy Nexus using xda premium

tbis said:
Try updating the radio and is it possible you live in a area where signal is poor. I haven't had an issue at all with my nexus
Sent from my Galaxy Nexus using xda premium[/QUOT
currenly using the latest from official 4.0.4
tried the many hybrid radios too out there and its still doing this. you must have gotten lucky then, ive been experiencing this ever since i got the phone
Click to expand...
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"like new" replacement improperly tested
Jooining the club.... I had a relatively well functioning gnex until about 2 weeks ago, it did reboot once in a while, but oh well. Then it totally died suddenly. Tried to revive it to save data, but to no avail. So here you come Verizon "like new" replacement..... :fingers-crossed:
Oh no....well sure enough, started to have problems with dropped connectivity data + voice immediately after init.
Previous phone never did it. And it is doing this over a huge urban city.... I was careful in transferring my SIM as well.
there a slew of threads around forums discussing this issue and related (among others see through https://code.google.com/p/android/issues/detail?id=24345"]https://code.google.com/p/android/issues/detail?id=24345
Is is time for class action against Verizon for improper testing procedures and wrongly sending faulty devices as new (which they can pass along to Samsung since ultimately, it is probably Samsung who is playing dumb) ?

deejaycin said:
Hey guys ever since getting this phone ive been having to keep getting replacements for it and it still havent fixed the various problems that ive had with this phone.
1. microphone will cut out during calls and sound will stop working.
This problem has been resolved from getting a replacement through verizon's warranty program.
After receiving my replacement however, i am now getting the signal drop issue where the only way for the phone to work is putting it in CDMA mode. Ive researched online and found that various other people have been experiencing the same problem with their galaxy nexus. So i go to the store to order another replacement.
After receiving my 3rd replacement, still no luck. This phone is still experiencing the same problem has the last where the signal would randomly keep dropping. So i go back into the store and decide to switch out the sim card for the phone and order another replacement.
The 4th replacement comes in and to still no surprise the signal keeps dropping off. I found that both korean made phones and chinese made phones are experiencing the same problem. Ive changed my SIM card, rooted and unrooted, tried various roms, updated to the unofficial 4.1 jelly bean update and still nothing fixes this damn radio problem.
Im so fed up with this phone but if anyone has any suggestions it would be greatly appreciated as i have no idea how to get a working galaxy nexus and have never experienced a working one still. I would KILL to get a phone that actually keeps a 4g signal ><
Click to expand...
Click to collapse
This is the VZW development thread. You'll find better responses /answers to your questions in the proper forum.
XDA Mods please move to proper thread.

Thread moved. Please do not post general threads or questions in the development section. Thank you.
---Jay--- From the GNex

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...
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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....
Click to expand...
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.
Click to expand...
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.

GPS Issues

I can confirm 100% issues with GPS on my AT&T Samsung Galaxy Note 4. I bought it Sunday (12/28/2014) and noticed instant GPS inaccuracies, teleporting, not updating correct route information, etc. I got home, OTA'd, tried again the next day, same issues. Took it into AT&T yesterday (12/30/2014), guy instantly swapped, I stood right there and showed him exactly what was happening on the brand new,fresh out the box phone. "Hmmm, I'd give it a couple of days to.....uhhh.....calibrate, then bring it back if it doesn't work." Screw that, wtf is going on? Why do a select few of us have the problem and why does it continue to happen to the same people?
In another forum, a guy took his back not 1, not 2 but 3 TIMES, same gps issues everytime......... Add me to the list of people who've had multiple phones and the same gps issues. SIM related????? Maybe? I can't have another phone, I absolutely love this thing.
Had a Note 2 for close to 3 years, not one GPS problem. Using the Otterbox Defender,tried with and without case.

Not experiencing this personally...
Might try the 'supposed' fix here and see if that helps you at all.

Orito said:
Not experiencing this personally...
Might try the 'supposed' fix here and see if that helps you at all.
Click to expand...
Click to collapse
Lucky you, I tried everything under the sun before I tried to get a new phone. I'm almost 98% positive it's a sim or AT&T software issue, most people started experiencing this after the update, I haven't had the phone long enough to know that information though.