Phone reports No Network, when singal bars are signal - Galaxy S III Q&A, Help & Troubleshooting

Hi,
I have an SGS3 in uk running Jelly Beans 4.1.1 ( I9300XXDLID ). It is the official firmware that Samsung issued over O2 network. My phone recently has started to report "No Network Registered" when I try to send an SMS. The weird thing is that, there are signals being reported by signal bar. If I try to make a call when this happens, then it can't make a call either, reports that no network signal is available.
However if put phone in Flight Mode from this point, and straight back to normal mode. It magically finds network and starts to work i-e make calls, send SMS. I can't workout why is this happening. I certainly did not had this problem prior to upgrading to Jelly Beans.
Has anyone else experienced something similar? Is there a solution for this? I am not keen on installing a custom ROM at this point, and would like to hear if there is a solution to this problem without having to install a custom ROM.
/Sheeda

Odin a stock firmware. That would help.
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Related

Not possible to make calls, sms or Data-Connection

Hey,
My problem:
Yesterday I flashed a few MIUI-ROMs, now I have neither a data connection, nor can I send or receive SMS. Also, calls are not possible. However, I can log in to the mobile network.
Kernel is reflashed, tried another ROM and already restored via SEUS.
Do not go on.
Can you help me?
I had this happen to me, my gsm card went bad cause the phone got hot when i loaded a kernal that was o/c, ATT swapped my sim for free, the funny part was that after I messed with the rom, I got no "faulty sim" or any alert that it was actually bad.

[Q] Data suddenly not working. Please help.

First let me start with the phone:
AT&T Galaxy S II running 4.1.1 SuperNexus Rom Build 4-20121007. Kernel is 3.01.15-CM-g3802d32 faryaa kernel. Baseband 1777UCLE5
Everything was working fine. I've been running SuperNexus for about a month. The only initial problem I had was that the baseband was not working upon startup and I had to put a new baseband in for it to work, got that fixed and been flying smooth for a month with no issues. Today...suddenly it stopped being so smooth.
Let me clarify:
- I can make outbound calls and hear just fine (couldn't do that when baseband was wrong)
- I can recieve and send text messages
- I show a full reception bar up top with 3g, the signal bar is grey. That may mean something or it may just be the color theme for this rom. I didn't really pay attention before the issue.
- Network info: AT&T network, Signal Strength -83 dBm 15asu, Mobile Netowrk type UMTS:3 HPSA+ :15, Service state is 'in service', Mobile Network Status 'connected'
I was literally in the middle of surfing the internet and pulled up a browser for a webpage, suddenly it hung in terms of loading the website. It did nothing for about ten minutes. I then found that all apps that use data do not work. They attempt to load but give errors. I rebooted the phone several times, shut it down fully several times, removed the battery and sim card, replaced and restarted. None of that worked. I made a call out to a friend and he could hear me and I him very clearly, call dialed out and connected without issues. Text messages come and go just fine.
The only thing I can think of is that they turned on the 4g signal in my area, or near it today and maybe there's an issue there.
Please help.
Thanks in advance.
http://forum.xda-developers.com/showthread.php?t=1996409
Sent from my SGH-I777
fifthmanstanding said:
First let me start with the phone:
AT&T Galaxy S II running 4.1.1 SuperNexus Rom Build 4-20121007. Kernel is 3.01.15-CM-g3802d32 faryaa kernel. Baseband 1777UCLE5
Everything was working fine. I've been running SuperNexus for about a month. The only initial problem I had was that the baseband was not working upon startup and I had to put a new baseband in for it to work, got that fixed and been flying smooth for a month with no issues. Today...suddenly it stopped being so smooth.
Let me clarify:
- I can make outbound calls and hear just fine (couldn't do that when baseband was wrong)
- I can recieve and send text messages
- I show a full reception bar up top with 3g, the signal bar is grey. That may mean something or it may just be the color theme for this rom. I didn't really pay attention before the issue.
- Network info: AT&T network, Signal Strength -83 dBm 15asu, Mobile Netowrk type UMTS:3 HPSA+ :15, Service state is 'in service', Mobile Network Status 'connected'
I was literally in the middle of surfing the internet and pulled up a browser for a webpage, suddenly it hung in terms of loading the website. It did nothing for about ten minutes. I then found that all apps that use data do not work. They attempt to load but give errors. I rebooted the phone several times, shut it down fully several times, removed the battery and sim card, replaced and restarted. None of that worked. I made a call out to a friend and he could hear me and I him very clearly, call dialed out and connected without issues. Text messages come and go just fine.
The only thing I can think of is that they turned on the 4g signal in my area, or near it today and maybe there's an issue there.
Please help.
Thanks in advance.
Click to expand...
Click to collapse
My friend was having literally the exact same issue today on his S3 and I was having a little problem on my phone too. At this point I think it's AT&T. My S2 was not go to HSPA+ it would just stay on 3G when I turned data on.
It is AT&T. They are changing the APN they use for data. I posted a fix for this in the other thread relating to this issue.
Sent from my SGH-I777 using xda app-developers app

Help! Can no longer make and receive calls.

So I was attempting to get VoLTE to work on an M Rom. I flashed 6.11.3 but even though VoLTE was enabled, calls kept dropping to 3G. After a few hours of frustration and flashing different roms on the forum to try to get VOLTE working, I conceded and flashed my original M Rom. However I couldn't get it to connect to my mobile network. I then realized that my IMEI and who knows what else was corrupted / showing 0. I managed to flash the IMEI using a guide on this forum and I can now get it to connect to the network at least for data. However when I try to make a phone call, I don't hear any ringing. And when someone tries to call me, their phone rings and eventually goes to voicemail. However nothing happens on my phone / no call is shown. Any help would be much appreciated.
bump

Verizon Galaxy S6 Edge+ with T-Mobile SIM - Can't Make Outgoing Calls?

Hi Everone!
I bought a Verizon S6 Edge+ a few months back. Ever since, I can only make outgoing calls ~15% of the time. The rest of the time, when I dial a number, it thinks about it for a little bit and then just ends the call. Incoming calls work perfectly fine. I tried the following things:
1. Changing mobile network to Global - sometimes allows me to make the call, often time does not.
2. Taking out and re-inserting SIM - doesn't change anything
3. Toggling airplane mode - doesn't change anything
Any ideas of what I can try? Thanks so much D
I had same issue, followed instructions from (https://www.getdroidtips.com/g928vvru3cqb9-nougat-s6-edge-plus/) to rollback to previous version of Android i.e. Marshmallow (https://forum.xda-developers.com/s6-edge-plus/general/g928vvru3cqb9-odin-nougat-7-0-firmware-t3601427). Able to roll back, but that did not work, So used Verizon update tool to update back to latest firmware, now it works fine. Give a try and see if this helps.
I'm having this issue with an AT&T sim.
Global: Data is at H+ and can make calls.
LTE/CDMA: 4G LTE Data works flawlessly but cannot make calls and gives me an error stating "incorrect sim or sim error".
LTE/CDMA/UMTS: 4G LTE Data works fine however when making a call data goes back to H+ and stays there.
gallant_suri said:
I had same issue, followed instructions from (https://www.getdroidtips.com/g928vvru3cqb9-nougat-s6-edge-plus/) to rollback to previous version of Android i.e. Marshmallow (https://forum.xda-developers.com/s6-edge-plus/general/g928vvru3cqb9-odin-nougat-7-0-firmware-t3601427). Able to roll back, but that did not work, So used Verizon update tool to update back to latest firmware, now it works fine. Give a try and see if this helps.
Click to expand...
Click to collapse
Can you explain more info? what version where you on before rolling back, im having serious connections issues since upgrading to android 7 and that 6.01 rollback looks interesting, my service worked just perfect on 6, when i upgraded to 7 my phone became unusable and wouldn't receive calls or texts unless i connect to the network every 15min with a call to my vmail. weird i know

My Xperia Z2 suddenly cannot make or receive calls unless i'm on GSM

Hey Guys,
Desperate lurker here saying First of all thanks for all the guides and everything that the devs and everyone that the community has done. I've search all of google and xda but i can't seem to figure out what's wrong with me Xperia Z2 .D6503
. T mobile carrier.
Basically since yesterday, I noticed that my phone couldn't receive or make any phone calls. but data internet, wifi internet and text messaging was working fine. Whenever people call me, i would just get a voicemail notice. At the time I was on the Marshmallow Existence rom. Ive done a lot of troubleshooting since then and still I can only make a call on GSM Mode.
Here's what i've done.
Wiped data and "reset" my phone on the Existence ROM - didn't work.
Wiped everything and flash Resurrection ROM - didn't work still.
Used someone else's sim card , couldn't receive calls either.
Use my sim card on a different phone - that one worked (SO IT'S NOT THE SIM CARD'S FAULT)
Placed back my sim card in the Z2 and reset flashed the stock rom from this page https://forum.xda-developers.com/xperia-z2/general/stock-t3355768
but that didn't work either.
I've also manually put the Tmobile APN.
Basically calls only work when changing it into GSM mode. but when i put LTE/WCDMA/GSM. Calls made under LTE/WCDMA/GSM Won't even make a dialtone when I make a cal. It basically just ends after a few seconds
I'm starting to think it might be a hardware issue because no matter which ROM i put, no matter how many factory resets and data wipes i've done. I can only make calls on GSM Mode.
Does anyone have any other ideas or should I just cry and buy a new phone.?
I suggest you to flash your phone with flashtool v0.9.18.6 and flash 291 ftf and wipe all
@whatsadophone
Have you try resetting APN for your SIM card when on your device?
thanks to everyone who tried to help. I don't know what happened. but after i tried putting the sim back in the Z2 to check my signals using Signal Spy, It suddenly can use LTE again. Only problem is since i installed that stock ROM, I lost my recovery mode and can't get it back. But i wont push my luck and just keep it like it is till i buy a new phone.
whatsadophone said:
Hey Guys,
Desperate lurker here saying First of all thanks for all the guides and everything that the devs and everyone that the community has done. I've search all of google and xda but i can't seem to figure out what's wrong with me Xperia Z2 .D6503
. T mobile carrier.
Basically since yesterday, I noticed that my phone couldn't receive or make any phone calls. but data internet, wifi internet and text messaging was working fine. Whenever people call me, i would just get a voicemail notice. At the time I was on the Marshmallow Existence rom. Ive done a lot of troubleshooting since then and still I can only make a call on GSM Mode.
Here's what i've done.
Wiped data and "reset" my phone on the Existence ROM - didn't work.
Wiped everything and flash Resurrection ROM - didn't work still.
Used someone else's sim card , couldn't receive calls either.
Use my sim card on a different phone - that one worked (SO IT'S NOT THE SIM CARD'S FAULT)
Placed back my sim card in the Z2 and reset flashed the stock rom from this page https://forum.xda-developers.com/xperia-z2/general/stock-t3355768
but that didn't work either.
I've also manually put the Tmobile APN.
Basically calls only work when changing it into GSM mode. but when i put LTE/WCDMA/GSM. Calls made under LTE/WCDMA/GSM Won't even make a dialtone when I make a cal. It basically just ends after a few seconds
I'm starting to think it might be a hardware issue because no matter which ROM i put, no matter how many factory resets and data wipes i've done. I can only make calls on GSM Mode.
Does anyone have any other ideas or should I just cry and buy a new phone.?
Click to expand...
Click to collapse
i have same problem any help pls?
try doing that signal spy solution by luck that I did in the post before that

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