Develop Bugs

Mobile Network Drop

Not sure if anyone else has had this problem but i randomly get mobile network drops once or twice a week. The phone works perfectly well but the mobile network just drops, you cannot scan for network at all. The only way i have found around it is to enable plane mode to drop all connections and then turn plane mode back off so the network starts up. This often takes between 5 - 10 mins for it to kick in.
Tried two roms but now back to stock but still happening.

Have you tried flashing the latest radio? They are listed in the dev section.

The recent OTA 1.21.405.2 update included a new radio I think. Did you put this on too?
Since then, I have also been having the network drop out. I am missing a lot of calls as a result. Prior to this update I had two months of problem-free operation on my stock 2.1 ROM.
From reading the google forums, this is a wide-spread issue. The light at the end of the tunnel seems to be that people updating to 2.2 froyo seem to see the problem stop. Two weeks to wait for us stock ROM boys according to the rumours then! Fingers crossed.
It's a bit embarrassing having this flashy toy when it struggles to be a phone at random intervals. At the weekend one of my less techy friends was waving his Nokia 6210i in my face saying, "At least I can make and recieve calls!". So I changed the language on his phone to Turkish when he left it lying about. The old ones are the best.
I am going to test the 1.21.405.2 theory by doing a factory reset later this week when I have time. Problem should persist if it is the new radio. Will post back with the results.

OK did a factory reset this morning. I left all my apps off, and did not set back up any google account business. I basically left it as a standard mobile phone.
Within 7 hours, guess what....yes it's lost the connection again. Strongly believe this is a radio problem. I'm too noob to know if I can flash the radio without rooting. Anyone?
I have since submitted my complaint with HTC CS. Will await their response, and post it here.
In the interim, turning airplane mode off and on again does regain the connection, and I have installed an app from the market place called "No Coverage Alert". It will now beep and buzz if I loose the connection so at least I will be aware every time it bombs out. Far from ideal but should do for now.
Watch this space.

Yes i have tried the two radios posted but i havent tried any international ones such as europe or asia. I still randomly get network drop and i need to turn radio off and back on again for it to pick up.
Maybe i should ask a chef if these drops are logged anywhere on the device so i can root in and look at the logs myself and diagnose what the network drop is on my phone.
Just to confirm, tried multiple radios and roms, i know exactly what i am doing all i would like is explaination of why it happens. It is not user error as i have tried with stock rom, no fancy apps etc to stop it from working or changing config.
its got something to do with the network radio libs that need a service restart. i am 100% sure if i rooted in and knew which service to restart it would work also

Erm.... this is a little embarrassing but I feel I need to own up to prevent misleading anyone. I have arranged with HTC customer support to send my Desire back for repair. They pick it up Monday.
I bought a cheap £10 phone to keep me going. It arrived this morning. After I had finished laughing at it, I put the SIM card in and powered up the phone.
"No SIM card instered" was the message it greeted me with. After numerous power-up and power downs, and some SIM card hoakee-coakee, it finally recognised the SIM card......then dropped the signal to Orange. EXACTLY what my HTC Desire did.
Doh.
I had tried the SIM card in another phone (my girlfriends Blackberry) when the problems first started and it had worked straight away. But the SIM card seems to be random in it's failures. Should have tested more rigorously.
Sorry guys but in my instance it seems I have simply a faulty SIM card. The first one I have ever had go wrong in 12 years, but there you go. I was too fast to blame Android/HTC.
A|ex, please try your SIM card in another handset. Do several power-ups to see if it goes wrong. Would explain why trying numerous radios/ROMs has not helped you.
Let me know?

I had the same issue. Talked all day and evening, then toyed around with the phone a little, flashed a new ROM, no connection. oO okay, that's weird. Tried 3 different ROMs, reset to factory settings. Went to Orange, the SIM was borked. Thankfully, getting a new one took all of 5 minutes and didn't cost me a dime.

Yep. Was the SIM card. The new one arrived from Orange this morning. Popped it in and it's working straight away. My 3G has even improved slightly I reckon.
Six hours of use and not one drop yet.
Thank god for that.

Unlocked GSM Galaxy Nexus - No signal al all

Hello,
A bit about my Nexus: Bought it online, it's the Domoco version, unlocked, rooted and been using just fine with many custom ROMs.
So yesterday morning, I was talking on the phone with a friend without any problem. After hanging up for a few hours, when I was about to call someone else, I realized my phone didn't have any signal at all. And it has been like that until now, about 48 hours.
It happened so suddenly without any warning. The phone has never been dropped and everything else working just fine.
So here's what I have tried:
- Restart the phone (multiple times)
- Batter pull (multiple times)
- Factory reset the phone (multiple times)
- Wipe cache and dalvik cache in CWM (multiple times)
- Downloaded SetCPU and set the minimum to 700Mhz (instead of 350Mhz)
- Reflash the ROM and tried with other Custom ROMs (I tried Xenon, Xylon, PA, and Carbon ROMs)
- Reflash the Radio and tried with other Radios too (I tried UILH1, XXLH1, SC04DOMLE3 and some others ...)
- I also went to Tmobile and request a new sim card - same problem.
- I borrowed a sim card from another Tmobile customer to try it on my phone - no signal - but the sim card works just fine on his phone.
I ran out of thing to try and I dont understand what happened ... anyone has an idea or something else for me to try ?
Anyone experience this before ?

Welcome too my hell. I have a playstore one now but my first Gnex was an international one and it has this same issue. Its a PCB problem a warranty would fix. I'm near Chicago and a few people have told me there is an electrical engineer downtown that fixes stuff like this. I don't have a price but I think something like this is your only option. Mine sadly is still a battery charger:thumbdown:
Sent from my Galaxy Nexus using xda premium

I know it sounds stupid, but have you tried toggling airplane mode? I run into the occasional loss of signal when im at work [fair to weak signal in the big metal box], and a reboot is the only thing that fixes it for me. Mines a play store model.

bodh said:
I know it sounds stupid, but have you tried toggling airplane mode? I run into the occasional loss of signal when im at work [fair to weak signal in the big metal box], and a reboot is the only thing that fixes it for me. Mines a play store model.
Click to expand...
Click to collapse
Ah yes, I actually did try that too but forgot to mention. I tried toggle airplane mode on and off, also the 2G only mode on and off. But it didn't help with anything.
Thanks for the suggestion.
JediDru said:
Welcome too my hell. I have a playstore one now but my first Gnex was an international one and it has this same issue. Its a PCB problem a warranty would fix. I'm near Chicago and a few people have told me there is an electrical engineer downtown that fixes stuff like this. I don't have a price but I think something like this is your only option. Mine sadly is still a battery charger:thumbdown:
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
So I guess I have to look for an electrician then, cause I have this phone just a little bit over a year so warranty is a no go for me.
Thanks for the idea.
PS: anyone else has more option for me ? I just wondered if I have bricked my phone ... cause I flashed lots of diff. ROMs to try out but never gotten a bricked phone before, could this be a bricked phone ?

Bricked refers to a phone that does what a brick does: nothing. It doesn't boot, it does not light or attempt to boot, it does nothing. This is a signal issue..I have no prior experience with docomo, but this thread came up on search: http://forum.xda-developers.com/showthread.php?t=1574018, maybe it'd be helpful. Have you converted it to yakju or takju and tried a google factory image?
And this: http://forum.xda-developers.com/showthread.php?t=1554150. If it is a circuit board, it kinda looks like s.o.l., and im sad to say that to you.

I wanted to let you know that I experienced the same issue. I bought the unlocked Docomo Galaxy Nexus, and had it working fine on T-Mobile for half a year, and then suddenly had no signal on Tuesday. Nothing I did - factory reset, battery in and out, sim card in and out - could fix it. Have you tried using different sim cards in your phone to see what works and what doesn't?
I figured out that my phone will accept AT&T, and actually does connect to T-Mobile while roaming (I used an international sim card). But, my phone will say "Cannot find mobile network" when any T-Mobile sim card is inserted.

chowabbajack said:
I wanted to let you know that I experienced the same issue. I bought the unlocked Docomo Galaxy Nexus, and had it working fine on T-Mobile for half a year, and then suddenly had no signal on Tuesday. Nothing I did - factory reset, battery in and out, sim card in and out - could fix it. Have you tried using different sim cards in your phone to see what works and what doesn't?
I figured out that my phone will accept AT&T, and actually does connect to T-Mobile while roaming (I used an international sim card). But, my phone will say "Cannot find mobile network" when any T-Mobile sim card is inserted.
Click to expand...
Click to collapse
I also have the same problem with the docomo phone. ATT Sim card works. Tried other's T-mobile sim cards and it doesn't work. I wonder if somehow the IMEI has been blocked by T-mobile.

wocman said:
I also have the same problem with the docomo phone. ATT Sim card works. Tried other's T-mobile sim cards and it doesn't work. I wonder if somehow the IMEI has been blocked by T-mobile.
Click to expand...
Click to collapse
I know others who bought their GNEX through the Play Store and those work just fine with T-mobile. I tried their sim cards in my phone and it doesn't work. I don't think T-mobile is intentionally blocking the docomo phones, because I'm getting T-mobile through roaming, when I use an international sim. My guess is they're doing something to the cell network that just somehow leaves our configuration out. Hopefully it's temporary, but who knows.
Worse case, I'll just purchase a Nexus 4, because I love 4G data for just $30/month with T-mobile. Anyone else got suggestions?

wocman said:
I also have the same problem with the docomo phone. ATT Sim card works. Tried other's T-mobile sim cards and it doesn't work. I wonder if somehow the IMEI has been blocked by T-mobile.
Click to expand...
Click to collapse
Alright, update on this and there' good news. I called Tmobile and they said my IMEI is actually Blocked. The reason, according to him, is that Tmobile usually sweep the network to clean up all "un-supported" devices, so my device is apparently one of them and therefore got blocked about 2 days ago.
So he said for this, he needs to escalate it to business support and they surely can unblock it for me, but I have to wait until Monday since they don't work on weekend. But well, that's surely a good news. phewwwwwwwwwwwwww !!!
So to all of you guys who are in the same situation, make sure you call Tmobile first before flashing crazy like I did LOL.
Thanks for all the help.

I'd love to know if you are able to get this unblocked and working as I have the same problem as of Tuesday. I was traveling and went into a TMO store, and they told me it was NOT IMEI blocked. In fact they looked at the IMEI and read the page and said 'it was not eligible for blocking'.

I called TMO to see if my phone is IMEI blocked, and through three levels of support the universal answer was no. I'm now fully confused because if it's a hardware issue, why did several people all have the same problem all on Tuesday. For those others who are having issues, can you see the TMO network but not connect to it? That's what I have, I can see TMO and AT&T but haven't been able to connect to either one since Tuesday.

simple23227 said:
Alright, update on this and there' good news. I called Tmobile and they said my IMEI is actually Blocked. The reason, according to him, is that Tmobile usually sweep the network to clean up all "un-supported" devices, so my device is apparently one of them and therefore got blocked about 2 days ago.
So he said for this, he needs to escalate it to business support and they surely can unblock it for me, but I have to wait until Monday since they don't work on weekend. But well, that's surely a good news. phewwwwwwwwwwwwww !!!
So to all of you guys who are in the same situation, make sure you call Tmobile first before flashing crazy like I did LOL.
Thanks for all the help.
Click to expand...
Click to collapse
I'll call up T-Mobile tomorrow and ask if they IMEI blocked my device. I had them reset my signal and give me a new SIM card, but didn't realize it could have been IMEI blocked. I'll give them a call on Monday and let you know what the result is. Maybe it won't be too late to cancel my order on that Nexus 4...

I'm quite confused. I've been told last Thursday in a TMO store and with tech support that I didn't have an IMEI block, and the same with three reps tonight. I know the Sim Card is good, and so I'm being told its a hardware issue. However, several of the same phones had the same issue on the same day, so I can't buy it's a hardware issue. Has anyone with this issue flashed a new or different radio into the phone, either before or after the service loss? I have not, running it as it came out of the box.

I just got off the phone with T-Mobile Support, and they told me the device is not blocked. The reason is that T-Mobile cannot block or unblock devices that are not registered to T-Mobile. So I'm back to square one on this.

chowabbajack - When did you first have a problem, last Tuesday? Did you prior to that do any flashing or radio changes to the phone?
We're in the same spot....

alexwinsberg said:
chowabbajack - When did you first have a problem, last Tuesday? Did you prior to that do any flashing or radio changes to the phone?
We're in the same spot....
Click to expand...
Click to collapse
I did not do any kind of flashing or radio changes prior to Tuesday, when I lost signal.

chowabbajack said:
I did not do any kind of flashing or radio changes prior to Tuesday, when I lost signal.
Click to expand...
Click to collapse
That makes me think its something to do with the radio software, because I am the same the problem overall doesn't seem as large as the number of phones I perceive were bought on the Docomo deal.

Ive been using the docomo version of the nexus as well on tmobile for almost a year and it was since last tuesday when it no longer recieved any singal. with some digging around and too many phone calls, I found that the imei number on the phone is not the same as the one under the battery. i have the generic 004999010640000 imei right now and it not sure how i got it. as i bought it unlocked.
what i have tried:
reboot, battery plug, reinsert sim, factory reset, root and flash, got a new sim card, relocked, unlocked
sim card works on other phones.
also i have called tmobile and samsung endlessly and this is what i got:
tmobile cannot unblock the imei since it is not from them.
samsung is redirecting me to their japan branch.
docomo i cannot reach.
my phone before last tuesday:
unrooted stock 4.2.1
been testing different things to see if there is any way to restore the imei
also using root explorer, i cannot find my efs folder....

I've got the same problem since last Tuesday with my GNex and T-Mobile.
Mine is not from docomo though, but the French phone provider SFR, unlocked through FDocomo apk.
Rooted phone, running 4.2.1., no changes whatsoever in the past month and it worked fine until Tuesday, so I don't think I'm responsible for having no signal.
Honestly, I am relieved to see we are quite a few to have this problem, and also very pissed at T-Mobile for causing all this. What should be the next step then? Is there any chances they fix the issue quickly? If not, I might just go to the competition. I've tried AT&T sim cards and they work fine.

vanessax17 said:
Ive been using the docomo version of the nexus as well on tmobile for almost a year and it was since last tuesday when it no longer recieved any singal. with some digging around and too many phone calls, I found that the imei number on the phone is not the same as the one under the battery. i have the generic 004999010640000 imei right now and it not sure how i got it. as i bought it unlocked.
what i have tried:
reboot, battery plug, reinsert sim, factory reset, root and flash, got a new sim card, relocked, unlocked
sim card works on other phones.
also i have called tmobile and samsung endlessly and this is what i got:
tmobile cannot unblock the imei since it is not from them.
samsung is redirecting me to their japan branch.
docomo i cannot reach.
my phone before last tuesday:
unrooted stock 4.2.1
been testing different things to see if there is any way to restore the imei
also using root explorer, i cannot find my efs folder....
Click to expand...
Click to collapse
I have the exact same generic IMEI number as you, which does not match the number under the battery. I'm not liking the news that you did flash and still no go. I'm a novice at this stuff so please keep us posted.

Tmobile Note 2 no network circle crossed out

Hi and thanks for any help that you can provide me.
I bought an Galaxy Note 2 SGH-T889 Tmobile version like 7 months ago from a store or reseller in Toronto Canada, the phone was in theory factory unlock, to use with the Wnmobile network which uses the same frequency as Tmobile. The phone was working until 2 days ago. Well always the phone has issue connecting to the network in some specific areas, specially because the Wind network it's not that good, but during the last 2 weeks I noticed more and more problems and some times it was just disconnected showing a circle with an slash or crossed out. After reboot the phone usually fixed the problem, until 2 days ago I had to do it every 2 hours and then the next day it just was permanent. I tried everything so far:
Remove battery and reboot
Remove battery and SIM card and reboot
Use a diiferent SIM card from my son's phone
Replace for a new SIM card
Clear Cache
Factory Reset
Reflash the modem with Odin
The phone has the latest stock ROM 4.1.2, BASE T889UVBMD1
The problem is Samsung say because it's a Tmobile they can not support it here, I have to send the phone to Samsung USA, I still fighting with the store because they said it will be covered locally, but that is another story.
I red many post talking about similar problems with the Galaxy S3 or S4 and one said that installing Jedi X14 fixed the problem, but to do that I think I have to root the phone, which not be a big problem.
The other weird thing is the phone works using other SIM card GSM, not tested with a LTE SIM.
There is any way to test if the radio/antenna for the WCMDA is disabled or broken
Thanks

fasterfoxy said:
Hi and thanks for any help that you can provide me.
I bought an Galaxy Note 2 SGH-T889 Tmobile version like 7 months ago from a store or reseller in Toronto Canada, the phone was in theory factory unlock, to use with the Wnmobile network which uses the same frequency as Tmobile. The phone was working until 2 days ago. Well always the phone has issue connecting to the network in some specific areas, specially because the Wind network it's not that good, but during the last 2 weeks I noticed more and more problems and some times it was just disconnected showing a circle with an slash or crossed out. After reboot the phone usually fixed the problem, until 2 days ago I had to do it every 2 hours and then the next day it just was permanent. I tried everything so far:
Remove battery and reboot
Remove battery and SIM card and reboot
Use a diiferent SIM card from my son's phone
Replace for a new SIM card
Clear Cache
Factory Reset
Reflash the modem with Odin
The phone has the latest stock ROM 4.1.2, BASE T889UVBMD1
The problem is Samsung say because it's a Tmobile they can not support it here, I have to send the phone to Samsung USA, I still fighting with the store because they said it will be covered locally, but that is another story.
I red many post talking about similar problems with the Galaxy S3 or S4 and one said that installing Jedi X14 fixed the problem, but to do that I think I have to root the phone, which not be a big problem.
The other weird thing is the phone works using other SIM card GSM, not tested with a LTE SIM.
There is any way to test if the radio/antenna for the WCMDA is disabled or broken
Thanks
Click to expand...
Click to collapse
If the phone is working fine with a friends sim card . There is nothing more then a issue with your sim. go to the store and have them to give you a new sim card or flash the one you have. I had that issue similar here with at&t all the time.. sims would just loose network.. The fix for me LEAVE AT&T
Good luck.

Yes, I replaced the SIM card and I got a new one.
Just trying to eliminate all the options, I just did a factory reset again, and put it back the SIM card, located outside in an area where I know there is a strong signal and the phone was able to connect to the network and I install the account ans the apps just to test the data connection and it works fine. I was outside for 20 minutes with no problem. Later go back in the building, as soon I was inside for a few minutes the phone lose connection and the circle is back, then reboot again several times, and the phone does not recognize any network, Searching and no network is available.

Aww you left out that it only does this inside but works outside.. I Would say something is blocking the signal. LIKE maybe the building..
i have two bars in my house 3 on the deck and full signal in my yard ...
its just how it is..

erica_renee said:
Aww you left out that it only does this inside but works outside.. I Would say something is blocking the signal. LIKE maybe the building..
i have two bars in my house 3 on the deck and full signal in my yard ...
its just how it is..
Click to expand...
Click to collapse
But he said it was working in side for many month then all a sudden it doesn't work? I understand I live in a mobile home and reception sucks but that from the start but his was working for couple months. I would say he's phone reception receiver w/e it is or something in the phone is screwing up and it will need repairment or replace or service just taking a dump and getting worse.

jcervantes11 said:
But he said it was working in side for many month then all a sudden it doesn't work? I understand I live in a mobile home and reception sucks but that from the start but his was working for couple months. I would say he's phone reception receiver w/e it is or something in the phone is screwing up and it will need repairment or replace or service just taking a dump and getting worse.
Click to expand...
Click to collapse
You could be right.. or maybe even the provider having issues with that tower .. its a tough thing to figure out..

Thanks for your ideas.
I get tired of trying to figure out was is the problem, so I got a SIM card from a diiferent provider which has the best network coverage and power, and i'ts happending the same, the majority of th etime the strength level is around -110 db even outside, with both providers, so it's the phone.
Now the question is could be possible that the antenna cable got disconnected or broken, (yes I dropped the phone a few times but nothing major) and it was working fine until few days ago. Another option it's some internal hardware is not working normally.
Now I have to find a way to repair becasue Samsung Canada does not want to do it becasue its a Tmobile phone.
Thanks, again.

fasterfoxy said:
Thanks for your ideas.
I get tired of trying to figure out was is the problem, so I got a SIM card from a diiferent provider which has the best network coverage and power, and i'ts happending the same, the majority of th etime the strength level is around -110 db even outside, with both providers, so it's the phone.
Now the question is could be possible that the antenna cable got disconnected or broken, (yes I dropped the phone a few times but nothing major) and it was working fine until few days ago. Another option it's some internal hardware is not working normally.
Now I have to find a way to repair becasue Samsung Canada does not want to do it becasue its a Tmobile phone.
Thanks, again.
Click to expand...
Click to collapse
Anybody with same provider as you? Invite them in you're home see if they have connection. It's best if the person have same phone and same company. Can you send directly to Samsung? I have bad phone service my area with s2 and note 2 but my friend with evo 3d has more bar then me and its made by htc but could be two things ur phone crapping out on you which need repairment or like the guy above said tower signal getting weaker. It is hard to find out. Maybe for now for a bit since it's screw up try a rom but then again rom doesn't control radio settings section but wouldn't harm. Good luck.

I'm having the same issue since last month... but with any SIM card.
The network signal strengh rests between -89 to -110 dBm. (Horrible)
The network type is always UNKNOWN:0.
What I already tried:
- Using other SIM.
- Flashing Stock ROM
- Flashing Custom ROM (CM 10.1)
- Flashing all 5 avaliable modems.
What happens:
When I get VERY close to a network antenna... I can make calls and stuff...
What can be happening:
Hardware issues - T-Mobile latest LTE unlocking update maybe burned my antenna (or some network signal related hardware).
Software issues - Can't see how since I used many variations of ROM/Modem.
I live in Brazil and my network is TIM 47. I have a Samsung Galaxy Note II T889.
If anyone can confirm perfectly to me what composes the T889 antenna components... that would be nice...
I want to buy those parts from eBay and trying fixing my phone.

Thanks for your feedback it's really valuable becasue it's almost the same situation. Today I cleared up the situation with Samsung, if I want to be service under the warranty I have to bring the phone to one of repair centres in USA which it's kind of problem because I can do it only in the weekends but not impossible or what I'm doing tomorrow is to have an assessment by one of the repair centres in Toronto and I have to pay in this case, if it's something reasonable.
In my case I did not update the phone in 2 months at least so it's not software in my case, but one difference could be I got a new job 3 months ago, in my previous job the majority of the time I got 5 bars , I guess the cell tower was close to that place, and in my house the coverage it's good. In my new job, my office it's in the middle of the building, far from the windows, so the signal always was really bad, 0-1 bar.
Wondering if could be possible that a bad connection can burn the antenna or the circuit that controls the connection.
The other thing is there are many customers specially for the Galay S4 complaining about a similar problem, and I did not find any answer on how to fix this problem.
I'll post any update just in case it can help someone else.
Thanks.

Did you try to disable lte and use 4g/3g/2g only?
Sent from my SGH-T889 using xda app-developers app

darekz said:
Did you try to disable lte and use 4g/3g/2g only?
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
Well... I did... and the problem persists.

Try to enable and disable wifi calling.
Sent from my SGH-T889 using xda app-developers app

A also have this problem with T-Mobile Note 2 and have already tried everything you guys have...I guess I got no choice but to request a replacement which sucks because my phone was pristine and worked perfectly otherwise. It's just the damn weak to no signal that's driving me crazy. Especially since I'm paying for premium data coverage and it's pretty much money in the trash every month.

That's it. I made the call and the replacement arrives in a couple days. They offered me the "jump" program. Anyone on that? Is that worth doing on T-Mobile?

I traded an unlocked i317m for a g pro. I just picked up a unlocked t889 as welll. The person with my old i317m want my t889 since hes using simple mobile. Problem is when I went to trade I put his sim in my t899 it wont register on tmobile. Seems its only working with at&t as thats the service I have. Now with the i317m I gave him originally it works with any sim. How is this possible that a unlocked tmobile t889 wont register with his sim on tmobile network but the unlocked i317m works with any sim?

Yesterday I replaced the microUSB module that is connected with the antenna and replaced the SIM card module too.
That did NOT worked.
So... the problems is problably on the mainboard/chipset... too expensive to fix.
Another big hardware failure for Samsung's history.

I've had the replacement for about a week now. So far no signal problems. It's like when I first got my original phone. I'm sticking with the note 2 for at least another 6 months since I joined the jump program. Can't wait to see the note 3 next week

Update just to close this case
Well, after I sent the phone for repair to Samsung USA, I got it back and the problems happened again after a few days, then I sent it back for the second time to Samsung, got it back and the problem happened again after a few weeks. Basically, I'm getting rid of this phone, now the warranty is already expired and half of the time the phone was full of problems with the network.
The lesson in this case is to avoid getting hardware from the first batch (to wait a few months after the launch) or without a long term warranty (3 years), and probably will be my last Samsung device.
:crying:

Diesel-30 said:
Can't wait to see the note 3 next week
Click to expand...
Click to collapse
You mean Note 4, no?

[Q] No IMEI

I just purchased this phone a week ago off of Craigslist, the phone worked great up until today. I noticed that I didn't have any service. I use a microcell at home so it was no big deal, thought that it had messed up like it does every now and again, however I got out to town where I usually have near full signal and still had none. I opened up settings and "Mobile Data" was turned off, I tried to toggle it back on and it will not allow me to do this. I went in to the "About Phone" part of the settings and the phone shows "Unknown" for cell phone number and IMEI.
This is the stock AT&T version G Pro that has not been rooted. I contacted AT&T thinking this may be a sim card problem or maybe I bought a stolen phone, but everything on their end seemed to be clean. I tried out a friends sim card and still had no luck. Called LG and they said I would need to send it in with a receipt. I don't have a receipt and I won't pay for them to repair the phone, because I'm sure the bill will wind up being more than the phone is worth.
Has anyone else had this problem? Are their any fixes anyone can think of that doesn't involve rooting the device? If not, what steps will I need to take to recover my IMEI so that the phone will actually make/receive phone calls and texts?

charlee08 said:
I just purchased this phone a week ago off of Craigslist, the phone worked great up until today. I noticed that I didn't have any service. I use a microcell at home so it was no big deal, thought that it had messed up like it does every now and again, however I got out to town where I usually have near full signal and still had none. I opened up settings and "Mobile Data" was turned off, I tried to toggle it back on and it will not allow me to do this. I went in to the "About Phone" part of the settings and the phone shows "Unknown" for cell phone number and IMEI.
This is the stock AT&T version G Pro that has not been rooted. I contacted AT&T thinking this may be a sim card problem or maybe I bought a stolen phone, but everything on their end seemed to be clean. I tried out a friends sim card and still had no luck. Called LG and they said I would need to send it in with a receipt. I don't have a receipt and I won't pay for them to repair the phone, because I'm sure the bill will wind up being more than the phone is worth.
Has anyone else had this problem? Are their any fixes anyone can think of that doesn't involve rooting the device? If not, what steps will I need to take to recover my IMEI so that the phone will actually make/receive phone calls and texts?
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Are YOU SURE you did not do anything to the phone? Cause loosing an IMEI requires the USER to do something wrong, like flashing other carrier Versions.

hyelton said:
Are YOU SURE you did not do anything to the phone? Cause loosing an IMEI requires the USER to do something wrong, like flashing other carrier Versions.
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Click to collapse
I've had my phone do that before. Wasn't rooted or hacked in any way. I didn't even know of a way to do it. What fixed mine was a **** load of factory resets. And I mean a **** LOAD!!! Luckily it came back and I've been good ever since. Don't know what happened or how but that was very weird.
Note to the wise: I don't care who says what about what! NEVER buy a phone off of craigslist or from anyone for that matter other than a carrier or authorized reseller. Because when it breaks, you can't do **** about it!

hyelton said:
Are YOU SURE you did not do anything to the phone? Cause loosing an IMEI requires the USER to do something wrong, like flashing other carrier Versions.
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Click to collapse
Well I have no reason to lie about something like this. I've only rooted one phone of the dozen or so I've owned and that was a old Galaxy Note.
This morning when I got home from work the phone had 76% battery left, woke up and it was dead. It powered up and showed 2% battery. I went into battery under settings, android system used 26% of the battery. Not sure that's enough to drain the batter while I was asleep.
Must be something definitely wrong in the phone.
Jammol said:
I've had my phone do that before. Wasn't rooted or hacked in any way. I didn't even know of a way to do it. What fixed mine was a **** load of factory resets. And I mean a **** LOAD!!! Luckily it came back and I've been good ever since. Don't know what happened or how but that was very weird.
Note to the wise: I don't care who says what about what! NEVER buy a phone off of craigslist or from anyone for that matter other than a carrier or authorized reseller. Because when it breaks, you can't do **** about it!
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Yeah, lesson learned. Craigslist is usually where I do my cell phone trading and buying.
I'll keep trying resets to see if this fixes the problem. Thanks!

Try to re flash a stock using an LG flash tool it might work as what other users did on their G Pro have the same issues

Still haven't found anything that works.
I'm guessing something has malfunctioned in the phone.

[Q] Unable to detect sim card

I bought my note 4 on launch day. Ever since then I've had an "unable to detect sim card please restart phone" error. At first it only showed up once every few days, but now it is getting more and more frequent and is happening multiple times a day. After reading starting the phone works fine for a while. I've done everything I can think of (pulling the battery, pulling and re inserting the sim, cleaning the sim), but nothing helps. Anyone else having this issue, or know of a solution? Thank you.

corbs64269 said:
I bought my note 4 on launch day. Ever since then I've had an "unable to detect sim card please restart phone" error. At first it only showed up once every few days, but now it is getting more and more frequent and is happening multiple times a day. After reading starting the phone works fine for a while. I've done everything I can think of (pulling the battery, pulling and re inserting the sim, cleaning the sim), but nothing helps. Anyone else having this issue, or know of a solution? Thank you.
Click to expand...
Click to collapse
I am having the same issue. Not sure of a fix yet but it is getting more and more frequent which worries me.

Same here. :sadface:

Same here! Anybody contact Samsung or Sprint about it?

Same here!!!

Just got my note 4 from Amazon.com. I had been reading about the lte to 3g call drop issue, and someone posted using there sim the card from the phone they were replacing fix this issue. So I put mine in from my s4 before i even turn it on for the first time. The phone worked, but was unable to connet to the 4g (lte / spark ) network. 3g worked fine. I got the message you all are getting (no sim, restart device....). It would happen like every 10 minutes. Once I put the sim that came with the phone in , all my problems went away. Long story short, you need another sim card.

I just called sprint and they are sending me another SIM card. It happens from time to time, but they did tell me if it continues, I can get it replaced for no charge.
Sent from my SM-N910P using XDA Premium HD app

This happened after my sim card swap. It would say "network did not respond in time" then "could not detect sim" then phone would reboot. It did it three different times. Then connection became stable and has not done it again. Not sure if these issues are the same as whats happening here. Just posting my experiences.

I actually bought 2 N910P. I planned on making a little extra money by selling 1 of them, but didn't count on the N910P being so easy to get, so I've held onto the other one for a back up until I found a ROM that I wanted to run on it. Well, I found a awesome ROM & booted up my 2nd N910P & got the message you have all mentioned. I thought it was strange, so I rebooted & got the same message again. After doing this a few times, I thought why not take my SIM card from the 1st N910P & put it in the 2nd N910P. I still got the same message after doing this, so I swapped them back before it messed up my primary SIM card. @Yoshi1221, please keep me/us updated if the new SIM card works for you. Has anybody else got a new SIM card? Also, after installing the 2nd ROM that I was trying out, the fingerprint scanner stopped working. I went back to stock & it still doesn't work, so I made sure that I did a full NANDROID backup on my 2nd N910P in hopes that once I get it working & the fingerprint scanner stops working, I can go back. Anyone else had this trouble?
Edit: I tried to activate my new GN4, but the DEC & HEX numbers were not recoginzed by Sprint.com. So I went into chat & they informed me that it had been turned over to technical support & to contact them again after 24 hours, so we'll see where it goes from there.
Update: Chatted with Sprint & the lady activated the SIM card after giving her the number. Hope this will help out. Just go to Sprint.com & click on the chat button.

Looks like new SIM card is working, but just got it today, seriously had to give up an arm and leg in order for sprint to send me one, but so far it looks like it is working, but just got it today, lol
Sent from my SM-N910P using XDA Premium HD app

Cool, glad it work out for you.

Also found out from a supervisor in the U.S that sprint is now selling GSM phones now. If you take out the SIM card and only receive 3G, you have a GSM phone, if you take out the SIM card and have spark/LTE, you have a CDMA phone
Sent from my SM-N910P using XDA Premium HD app

I had this problem. Sprint sent me a new sim. Fixed the problem for a few weeks but it has returned. Anyone ever get this figured out?

Sim card not found
I had forgetten about this error. Saw that someone suggested a piece of paper between the sim and case cover. I had this happen with a phone I got off a forum. Sent it back and got a replacement. The paper, no matter how thin or thick may or maynot work, and only for a short time. Changing the sim might not work either. You may just need a new phone. I went through all with a s4. Now my note 4 is doing it. I thought it was my recently deceased (July 4) mother was messing with me. One more errand to add to my list for today.

same here?
help plz