Random loss of signal - T-Mobile Samsung Galaxy Note II

Hi all,
I'm running Jedi Master X2 on my tmobile note 2 and have been seeing many issues with regards to connectivity. Rarely I can get 4G LTE and most of the times it drops to 4G, 2G or loses data all together. It seems very random at times. When data is lost it will either say 'searching' or it shows 'not registered on network'. I read some other forums and the 'not registered on network' issue seemed to be related to the wrong/blacklisted IMEI, but i can see mine just fine.
I've also attemped to go back to the stock 4.3 ROM, but to no avail (performed a full wipe when going between). Setting the SE Linux Mode to permissive doesn't improve the signal either. I've tested my sim and checked the physical antenna/modem by swapping with another tmobile note 2 but don't see the issue there. => it's isolated to my phone (software related)
I have the following installed:
Android version: 4.3
Baseband: T889UVUCMK7
Kernal: 3.0.31-2085660
[email protected] #1
Tue Nov 19 16:53:20 KST 2013
I'm really frustrated and not sure what to do next. Any help would be grateful! Thanks!!

Related

[Q] Bad network connection after upgrading to CM 10.2

Hey guys,
I recently upgraded my Rogers Galaxy S3 d2att from CM10.1 Nightly 02/12 to CM 10.2 and have no longer been able to get the usual H+ connection. I now have either no letter or an E beside the signal bar. I did the following:
Dirty Flash 10.2 through Recovery Menu
Delete cache, dalvik and data in recovery menu
Couldn't get 3G, 4G or H+ Connection so I dirty flashed 10.1
Installed latest d2att rogers modem, installed latest bootloader, neither worked
Flashed back to CM10.1 Nightly
Can't get previous H+ connection on CM10.1 Nightly
I'm getting the worst headache trying to solve this. I'm more than willing to revert back to stock to try and get this working properly.
Thanks!
UPDATE:
I found out my IMEI was deleted while flashing. Does anybody know how I would get this back?
First off, how did you get cm 10.2
Cerhio;4409stock said:
[*]Dirty Flash 10.2 through Recovery Menu
[*]Delete cache, dalvik and data in recovery menu
[*]Couldn't get 3G, 4G or H+ Connection so I dirty flashed 10.1
[*]Installed latest d2att rogers modem, installed latest bootloader, neither worked
[*]Flashed back to CM10.1 Nightly
[*]Can't get previous H+ connection on CM10.1 Nightly
[/LIST]
I'm getting the worst headache trying to solve this. I'm more than willing to revert back to stock to try and get this working properly.
Thanks!
UPDATE:
I found out my IMEI was deleted while flashing. Does anybody know how I would get this back?
Click to expand...
Click to collapse
Try going back to stock by odin. That should work. And how did you get cm 10.2?? Can you give me the link where you downloaded from. That would be great.
Cerhio said:
Hey guys,
I recently upgraded my Rogers Galaxy S3 d2att from CM10.1 Nightly 02/12 to CM 10.2 and have no longer been able to get the usual H+ connection. I now have either no letter or an E beside the signal bar. I did the following:
Dirty Flash 10.2 through Recovery Menu
Delete cache, dalvik and data in recovery menu
Couldn't get 3G, 4G or H+ Connection so I dirty flashed 10.1
Installed latest d2att rogers modem, installed latest bootloader, neither worked
Flashed back to CM10.1 Nightly
Can't get previous H+ connection on CM10.1 Nightly
I'm getting the worst headache trying to solve this. I'm more than willing to revert back to stock to try and get this working properly.
Thanks!
UPDATE:
I found out my IMEI was deleted while flashing. Does anybody know how I would get this back?
Click to expand...
Click to collapse
Are you sure you don't mean CM 10.1.2? I don't think CM 10.2 is available for the Rogers or AT&T Galaxy S III yet...if it is please link to it.
n_alvarez2007 said:
Are you sure you don't mean CM 10.1.2? I don't think CM 10.2 is available for the Rogers or AT&T Galaxy S III yet...if it is please link to it.
Click to expand...
Click to collapse
Yes sorry, you're absolutely right! I still have service on my phone but I cannot even get 3G signal.
Cerhio said:
Yes sorry, you're absolutely right! I still have service on my phone but I cannot even get 3G signal.
Click to expand...
Click to collapse
1. Check if Access Points are correct
2. Check if you lost your IMEI (normally if you still get service but not mobile data beside edge, your IMEI will show as 0)
3. if the above aren't true, have you try flashing different nightly/stable or different roms?
and if your imei was deleted
you need to inject your imei again
first, take out the battery, beside the battery there should be serial numbers and imei numbers
secondly, you need SGS3 NV Gen and NV item reader & writer OR you can also use QRST though the process is a little more difficult (I don't think i can distribute the files here, and QRST you can google it)
as for SGS3 NV gen and nv item writer, you just need to copy and paste your imei to SGS3 NV Gen and it'll write to a text file, then all you need is to use NV item writer to connect with your phone and upload the file.
oh and you need to revert back to stock rom because the phone needed to be in RM + Modem + something mode lol... which is located in one of the secret menu .... i believe it was *#7284#
pcshano said:
2. Check if you lost your IMEI (normally if you still get service but not mobile data beside edge, your IMEI will show as 0)
Click to expand...
Click to collapse
I did...
I did
I followed your steps. The IMEI was injected successfully but the ERI is still showing 0. How do I fix that?
Or, how do I get it to re-register on the network with the IMEI in place?
Samsung Galaxy S3 (d2att) Poor or no Service
I'm having the same issue - or so it appears. my IMEI was also erased and I restored it using the method described above. That solved the issue of not being able to connect to the network at all, but now my connection last 3 minutes at best. I start off with LTE, then 3g, then g, then no letter at all and through that all, making/receiving calls, sending receiving texts, and even accessing the internet is only doable the first 3 minutes or so. After that, all if gone.
I've gone through the following radios:
I747UCLEM: modem_CWM_I747UCLEM.zip - 19.06 MB - May 22nd, 2012 (original shipped)
I747UCLG1: modem_CWM_I747UCLG1.zip - 19.06 MB - July 1st, 2012
I747UCLH1: modem_CWM_I747UCLH1.zip - 19.40 MB - August 1st, 2012
I747UCLH9: modem_CWM_I747_UCLH9.zip - 18.90 MB - August 9th, 2012
I747UCLI5: modem_CWM_I747UCLI5.zip - 19.51 MB - September 5th, 2012
I747UCDLK3: modem_CWM_I747UCDLK3.zip - 18.42 MB - November 3rd, 2012
I747UCDMG2: modem_CWM_I747UCDMG2.zip - 19.01 MB - July 2nd, 2013
I've tried various CWM versions, ROMs, and even Odined back to stock but still have the same issue. I ruled out the possibility of it being a SIM issue by placing my SIM in another phone. Service worked beautifully as expected. I took a working SIM from another phone and placed it in mine and had the same poor signal issue.
I've tried a good deal of troubleshooting methods and am seemingly stumped. I'm sorry to see that others are having the issue but I'd like to help however I can. the only thing I can say for certain is wrong at the moment is that my Serial Number seems to have been changed and no longer matches what is written on the phone....could that be the issue?
Current Serial number is displayed in about phone as: 1f03dbad
Hopefully, this provides some insight and someone a bit more knowledgeable than myself can help us find a solution.
If you need anything else, let me know and I'll do my best to provide it.
Please help I have the same issue, I have flashed back AT&T official ROM, but no 3G signals and weak phone signals. Did you guys find a solution? How do I check my ERI?
Please help if you have a solution.
triplethreat117 said:
I'm having the same issue - or so it appears. my IMEI was also erased and I restored it using the method described above. That solved the issue of not being able to connect to the network at all, but now my connection last 3 minutes at best. I start off with LTE, then 3g, then g, then no letter at all and through that all, making/receiving calls, sending receiving texts, and even accessing the internet is only doable the first 3 minutes or so. After that, all if gone.
I've gone through the following radios:
I747UCLEM: modem_CWM_I747UCLEM.zip - 19.06 MB - May 22nd, 2012 (original shipped)
I747UCLG1: modem_CWM_I747UCLG1.zip - 19.06 MB - July 1st, 2012
I747UCLH1: modem_CWM_I747UCLH1.zip - 19.40 MB - August 1st, 2012
I747UCLH9: modem_CWM_I747_UCLH9.zip - 18.90 MB - August 9th, 2012
I747UCLI5: modem_CWM_I747UCLI5.zip - 19.51 MB - September 5th, 2012
I747UCDLK3: modem_CWM_I747UCDLK3.zip - 18.42 MB - November 3rd, 2012
I747UCDMG2: modem_CWM_I747UCDMG2.zip - 19.01 MB - July 2nd, 2013
I've tried various CWM versions, ROMs, and even Odined back to stock but still have the same issue. I ruled out the possibility of it being a SIM issue by placing my SIM in another phone. Service worked beautifully as expected. I took a working SIM from another phone and placed it in mine and had the same poor signal issue.
I've tried a good deal of troubleshooting methods and am seemingly stumped. I'm sorry to see that others are having the issue but I'd like to help however I can. the only thing I can say for certain is wrong at the moment is that my Serial Number seems to have been changed and no longer matches what is written on the phone....could that be the issue?
Current Serial number is displayed in about phone as: 1f03dbad
Hopefully, this provides some insight and someone a bit more knowledgeable than myself can help us find a solution.
If you need anything else, let me know and I'll do my best to provide it.
Click to expand...
Click to collapse
I am having the same connectivity issues. I had to restore my IMEI earlier this week after a dirty upgrade, and then restored to several 10.1.x versions and back to 10.2, though this did not help. I did a stock restore and then rooted again, as well as restored 10.1.2 and nothing helped. I also dirty flashed beanstalk latest build, 2 builds of paranoid android and nothing worked.
Sometimes I can get on LTE or HSPA+ for a few minutes after turning data off and on, but this resets. I have also tried several APN settings, the ones provided by cyanogenmod as well as reconfigurations.
I having issues with CM10.1.3 ,I searching and finding this on the Google plus internet page of CM talking about compatibility of our phone with the news CM ROMs:
" To make sure your device is primed and ready for this state, the following lists the bootloaders compatible for each device:
d2att: I747UCDLK3 & I747MVLDLK4"
I have also change the baseband...
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
warweolf said:
I having issues with CM10.1.3 ,I searching and finding this on the Google plus internet page of CM talking about compatibility of our phone with the news CM ROMs:
" To make sure your device is primed and ready for this state, the following lists the bootloaders compatible for each device:
d2att: I747UCDLK3 & I747MVLDLK4"
I have also change the baseband...
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
This is irrelevant, the new bootloader was added into the recovery ROM so there is no need to downgrade the bootloader. I did just in case to see if my issue would be fixed but as expected it was not.

[Q] No data connection...

I haven't changed anything since March 8th, this all just happened very suddenly.
I'm at work, LTE is good, streaming a podcast. Podcast cuts out, I figure its just a ****ty stream, but I notice no LTE/3g/H+ logo above my connection icon. Can't connect to mobile data at all. Zip, Zero, Nada. Reset phone a dozen times, pulled battery, left off for a long period, and now I'm back home and still nothing. MMS/SMS/Wi-Fi all work fine, as does voice.
Pertinent info:
4.4.2
baseband: 1747ucdlk3
kernel version: 3.4.77-cyanogenmod-gb25714b [email protected] #1 wed, FEB 26 15:12:23 pst 2014
Cyanogenmod version: 11.0-installerXNPQ09Q
Any ideas?
It does appear you're on a later version of CM Nightlies. You could possibly attempt to download that to see if that works, or even flash another ROM to see if that works. (If you do go about flashing another ROM, please remember to wipe your device)
Another suggestion which will more than likely work is to flash a stock S3 ROM that works for your define and get the APN settings. (Make sure you have confirmed data is working on the stock ROM flash please) I'd then suggest comparing the stock APN settings with the custom AOSP ROM you flashed.
Sent from my SAMSUNG-SGH-I747 using Tapatalk
http://forum.xda-developers.com/showthread.php?t=2711698 ...similar issue

"Mobile Network Is Not Available" Gio running CM 11

This is my first post here, so apologies if this isn't where my post belongs or I screw something else up.
So, I had a previous CM on my phone for awhile, whichever used 4.0.4 as memory serves.
Decided to try a 4.4.x based rom, and found a 4.4.2 rom which actually has a working camera, which seems to be always the problem with roms for the Gio.
I *thought* everything had gone smoothly, only to realize that my phone had no connection to the Mobile Network wasn't working. it took me a moment to figure out how to get that connection to work as this had not been a problem previously. my problem is the connection seems to be forgotten, on occasion, with little or no warning that I can neither make or receive calls nor SMS. Forcing me to search for the network, and reconnect.. shouldn't this happen automatically?
I hope I've provided enough information to be useful, if not I'd naturally be happy to provide what I can.
Thanks!
I'm on Virgin Mobile in Canada
Galaxy Gio
CM Version : 11.0-20140605
Android Vers: 4.4.2
Baseband Vers: S5660XXKS2
Kernel Vers:
2.6.35.7-androidarmv6+
[email protected] #1
Thu Jun 5 16:09:21 CEST 2014
Build Date: Thur Jun 5 15:40:49 CEST 2014
Build # :
cm_gio-userdebug 4.4.2 KVT49L
20140605 release-keys
I am using CM11 RC9 also meet the same problem, after a soft reboot then it show "Mobile Network Is Not Available", everything is work except using mobile network to surf the internet.
And there has another problem, sometime Wifi suddently no data transfer, I have to turn it off and turn on again, and it's working again.
A newly flashed rom or sudden reboots activates 3G network mode. So switch to 2G in these cases.
It's a 3g/2g phone and 2g coverage doesn't seem to be as good in this area. I could understand if I were in a low-coverage area but it seems to be intermittent, it will be working fine, and then stop, then it will have trouble finding a network after searching multiple times. even then, again, should it not be doing something like this automatically? It shouldn't require manual intervention every time I lose signal.
Galaxy_Rohit said:
A newly flashed rom or sudden reboots activates 3G network mode. So switch to 2G in these cases.
Click to expand...
Click to collapse
Okay, I was out with the phone today and it was constantly losing the signal then not being able to find any networks "error searching for networks" so I think this rom is not really in a good place yet, I'll have to try my luck with something else.
Looks like it was a noob mistake on my part, I think the baseband was changed to an American S5660 one, namely XXKS2
I was able to apply one from an older Canadian S5660M rom from samfirmware.com, namely UGKG3.
So I *think* it's sorted, but I'll keep you up to date.

No 3g Data connection

Hi all
a few months ago I came here because I was all the time seeing the dreadful No Storage message.
I rooted the device in order to install link2sd and I was happy ever after.
Few days ago though, my connection suddenly stopped to work. the carrier says everything is fine, the tablet is correctly set up, the data plan is active and from their point of view everything is OK.
Is there any way check if everything is OK mobile data speaking? Can I factory reset even if rooted?
Thanks in advance [emoji4]
1. Are you rooted? Yes
2. Have you unlocked the bootloader? Yes
3. What ROM are you on? None. Just rooted.
4. Which kernel are you on? 3.0.31 [email protected]#1 smp preempt wed apr 3 kst 2013
5. What were you doing just before the problem happened? Nothing, it just stopped to work. I was writing something on WhatsApp.
6. How can we recreate the problem? I don't think it can be recreated as it happened with no apparent reason.
7. What have you done so far to fix it? I have not done anything so far. I will try tonight a factory reset.
8. Attach any logcats you have.

Mobile Network and Restart Issue

Hello
I want to bring up an issue that started a week after the latest security update I received (WW_ZS620KL_90.11.162.50_20190326). I am helpless with this issue.
ISSUE
SIM card network fluctuation
Every minute or so the sim card networks go down and after that, the phone says that there is no sim card inserted.
After a couple of minutes that signals are restored and this happens again.
This sometimes makes the phone restart abruptly.
I didn't find ways to reproduce this but it happens every now and then.
THINGS I TRIED
Downgrade to the stock version.
Factory Reset.
Turn off Dual VoLTE.
Nothing worked
DEVICE INFORMATION
Model Number: ZS621KL
Android Version: 9.0
Rooted: No
Baseband version: M3.15.35.26-Draco_000621
Kernel version: 4.9.112-perf+ [email protected] #1
Build number: PPR1.180610.009.WW_user_90.11.162.50_20190326 release-keys
PEOPLE WITH SAME ISSUE
Networ Signal Loss after update
Zenfone 5z sim not allowed issue
https://forum.xda-developers.com/zenfone-5z/how-to/zs620kl-fota-update-links-update-20-08-t3831794/post78843881
https://forum.xda-developers.com/zenfone-5z/how-to/zs620kl-fota-update-links-update-20-08-t3831794/post78743454
https://forum.xda-developers.com/zenfone-5z/how-to/zs620kl-fota-update-links-update-20-08-t3831794/post78534551
SCREENSHOTS
See attachments
I rarely have this issue too. It has only happened around 2 times this month. But it can depend on the provider as well.
I got a low signal in a very specific building in my area.
I use only one sim and micro sd card.
I have observed this issue when 2 SIMs of same network are used. I'd recommend you to walk in to the nearest service centre as downgrading and data wipe has not worked for you. I don't think any further resolution can be provided on xda.
This seems to be a sub-standard quality issue, please visit the nearest service centre and ask for assistance and try to get your handset replaced.
ramsanath said:
Hello
I want to bring up an issue that started a week after the latest security update I received (WW_ZS620KL_90.11.162.50_20190326). I am helpless with this issue.
ISSUE
SIM card network fluctuation
Every minute or so the sim card networks go down and after that, the phone says that there is no sim card inserted.
After a couple of minutes that signals are restored and this happens again.
This sometimes makes the phone restart abruptly.
I didn't find ways to reproduce this but it happens every now and then.
THINGS I TRIED
Downgrade to the stock version.
Factory Reset.
Turn off Dual VoLTE.
Nothing worked
DEVICE INFORMATION
Model Number: ZS621KL
Android Version: 9.0
Rooted: No
Baseband version: M3.15.35.26-Draco_000621
Kernel version: 4.9.112-perf+ [email protected] #1
Build number: PPR1.180610.009.WW_user_90.11.162.50_20190326 release-keys
PEOPLE WITH SAME ISSUE
Networ Signal Loss after update
Zenfone 5z sim not allowed issue
https://forum.xda-developers.com/zenfone-5z/how-to/zs620kl-fota-update-links-update-20-08-t3831794/post78843881
https://forum.xda-developers.com/zenfone-5z/how-to/zs620kl-fota-update-links-update-20-08-t3831794/post78743454
https://forum.xda-developers.com/zenfone-5z/how-to/zs620kl-fota-update-links-update-20-08-t3831794/post78534551
SCREENSHOTS
See attachments
Click to expand...
Click to collapse
It is happening with some users of Zenfone 5z, even with myself.
It must be an error of using Android 9.
Maybe in newers updates, it would works
i face the issue where my 4g network disconnect and get back connected after 5 seconds..
Sent from my Asus Zenfone 5Z using XDA Labs
I have no network at all.

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