Database Users

[HELP] [Q] No Mobile Data Signal

Hi,
I recently was getting frustrated with the ROM Gummy. ROM GUMMY: (http://forum.xda-developers.com/showthread.php?t=2563973) so i wanted to try something new and never thought i'd get a problem as when i flashed GUMMY it was so simple and everything worked.
However, when i flashed to the ROM S4 Google Edition: (http://forum.xda-developers.com/showthread.php?t=2544474) i noticed my signal / network won't stay connected. It may work for 2mins then disconnect - so i tried another ROM thinking it was caused by the S4 Google Edition.
I'm now currently on KOT49H【4.4.2】Google Play Edition (http://forum.xda-developers.com/showthread.php?t=2557353) and still getting no signal, only if i keep changing it to automatically find a network.
I've been reading it could do with Modems, or have i really messed something up and won't be able to fix my phone? I'm sort of new to this all so if you could explain more than tell me to do something that would be great.
Phone: Samsung S4 i9505
Baseband Version: i9505DVUBMGG1
Network Provider: GiffGaff (o2 Company)
Any help would be great.

hamzzzzz said:
Hi,
I recently was getting frustrated with the ROM Gummy. ROM GUMMY: (http://forum.xda-developers.com/showthread.php?t=2563973) so i wanted to try something new and never thought i'd get a problem as when i flashed GUMMY it was so simple and everything worked.
However, when i flashed to the ROM S4 Google Edition: (http://forum.xda-developers.com/showthread.php?t=2544474) i noticed my signal / network won't stay connected. It may work for 2mins then disconnect - so i tried another ROM thinking it was caused by the S4 Google Edition.
I'm now currently on KOT49H【4.4.2】Google Play Edition (http://forum.xda-developers.com/showthread.php?t=2557353) and still getting no signal, only if i keep changing it to automatically find a network.
I've been reading it could do with Modems, or have i really messed something up and won't be able to fix my phone? I'm sort of new to this all so if you could explain more than tell me to do something that would be great.
Phone: Samsung S4 i9505
Baseband Version: i9505DVUBMGG1
Network Provider: GiffGaff (o2 Company)
Any help would be great.
Click to expand...
Click to collapse
You have to flash a new modem for 4.4 like nb9. If you have a bootloader without knox, flash only the modem.bin file. If you have knox, flash modem and non-HLOS.bin. there's a nice modem thread in the general section.:good:http://forum.xda-developers.com/showthread.php?t=2192025

speedwayfan75 said:
You have to flash a new modem for 4.4 like nb9. If you have a bootloader without knox, flash only the modem.bin file. If you have knox, flash modem and non-HLOS.bin. there's a nice modem thread in the general section.:good:
Click to expand...
Click to collapse
Any chance for links? Ive been searching...

hamzzzzz said:
Any chance for links? Ive been searching...
Click to expand...
Click to collapse
Take a look: HERE

Joku1981 said:
Take a look: HERE
Click to expand...
Click to collapse
Thanks. This fixed the issue. However I don't have any sound now. Maybe you know why? And calls cant come through / make any

Better we go to the other opened thread u have: HERE. Next time dont open 2 or more threads asking same things pls. Ty

Modem issue SGH-I337M on Goldeneye Rom

Hello all,
I am relatively new to custom roms and flashing my phone, I'm trying to learn as i go but I've found myself stumped.
I've recently flashed goldeneye rom, and ive been having issues with my signal strength, if my phone is even in my pocket i with have no signal
I previously ran cyanogenmod 11 and had no issues
I am on the MTS network in Manitoba, Canada
my baseband version is
I337MVLUAMG1
I'm getting confused when i try to look into all the different modem version
anyone have any suggestion on which one to try?

did you follow Canadian install instructions in OP. IE--Kernel Fix

Hello, I´m having the same problem with the signal.
I can´t find the fix you mention, would you be kind enough to point to it.
The rom is very well done, the only problem for me at least is the signal when the phone is with the screen turn off and i lose all signal.

I've been experiencing the same trouble with goldeneye and echoe illusion rom. As soon as I stop using the phone line or internet, the connection usually goes away after 15sec to 2-3 minutes. I have to ask the phone to look for signal again and choose the service provider to get back service, which usually takes 30sec. When I click on my service provider I get back to 3-4 bar signal strength instantly.

I can't find that link. You will have to research it.
You guys should really start your own threads in Q&A. Hijacking one makes it hard for others to follow with 3 different posts on maybe 3 different solutions. It may or may not be the same answer for all of you. One may just be not a clean flash. One may not be flashing correct modem etc. I am not on i337m.
When you start your thread give all your info like phone info, how you flashed, any details on what you did to fix, build number etc etc. More the better.
Good Luck--:good:

if you're on kitkat based rom but still have jelly bean modem you will have signal drops. when I updated to kk I first flashed the modem alone (NC1 in my case) while still on jelly bean and then I updated to kk based rom.
Sent from my GT-I9505 using XDA Premium HD app

Lost Signal after Lollipop update

Hi guys
My phone was rooted but never flashed a ROM on it. Today I updated my phone to Lollipop through Kies Mac. After that my signal is not there. When I reboot the phone I get signal for few seconds then it gets lost again. Also phone never saves my Wi-fi connections.
I did reset my phone but still the same.
It was locked to Vodafone and I unlocked it in Vodafone shop when I first bought it do you think anything related to that?
How can I downgrade to KitKat or get my signal working?

Same here. Do any of you guys know how to solve this issue?

PiskopatYazar said:
Hi guys
My phone was rooted but never flashed a ROM on it. Today I updated my phone to Lollipop through Kies Mac. After that my signal is not there. When I reboot the phone I get signal for few seconds then it gets lost again. Also phone never saves my Wi-fi connections.
I did reset my phone but still the same.
It was locked to Vodafone and I unlocked it in Vodafone shop when I first bought it do you think anything related to that?
How can I downgrade to KitKat or get my signal working?
Click to expand...
Click to collapse
nightmare3112 said:
Same here. Do any of you guys know how to solve this issue?
Click to expand...
Click to collapse
Please use the search function of this site and google, don't be lazy. There is a thread about downgrading . Also try flashing lollipop modem/bootloader, for this visit any of the TouchWiz Lollipop rom threads (like the one in my signature) most of them talk about flashing modems and bls.

[Q] No signal

Hi all,
First of all, I have a Samsung galaxy s4 from Canada specifically from Rogers. I have got it hardware unlocked, rooted and I am on Cyanogenmod 11.
Now to my problem, I am in the Philippines and I would frequently lose signal, if I'm lucky, it would re-aquire the signal but most of the time, my work around is to turn airplane mode on and off and it would connect back to the carrier for maybe a minute and fully lose signal again.
Any help or suggestions would really be appreciated as it is such a pain to airplane mode and off when I'm jamming to my BT speaker
Here's information about my phone:
Model: sgh-1337m
Cyanogenmod version: 11-20150309-nightly-jflte
Android version: 4.4.4
Baseband version : 1337mvluamdj
If i could help you guys, help me with my problem just let me know.
Thanks all for reading.

Signal issues are mostly connected to the modem,
Flash the right modem for your phone/carrier and see if it help

GDReaper said:
Signal issues are mostly connected to the modem,
Flash the right modem for your phone/carrier and see if it help
Click to expand...
Click to collapse
Hey, thanks for the reply!
I'm a little new to this, could you go in depth on how to do so. Or maybe direct me to a few links I could follow? I am not in Canada and this is my only phone, so I don't want a chance to brick it.
Thanks!
Edit: do I need a computer to reflash the modem because that is something I don't have at the moment.

Here is a modem list. It also has a guide on how to flash.
There was another thread that included the latest lollipop modems , but I can't find it anymore.
You will need Odin which means that you require a PC.
Go to sammobile.com and check what version you need for your carrier and country

[Q] Help! Problems with lte and mobile neteork

Hey guys, I really need your help now... I tried everything I could but couldn't fix the problem.
So, I have LG g2 d802, and I live in east europe, Georgia, near turkey.
I upgraded my phone with kdz to stock lp, i didn't like it, so i downgraded bootloader and flashed blisspop.
I don't. Really remember when it started, but right now I can not get lte to work.
Also, mobile internet and generally reception is really weird. It has some drops, mobile network most of the time doesn't work, and reception is bad and laggy.
I kinda flashed another modem, radio, baseband nothing seems to work. Or may be i didnt flash correct ones, and i dont even know which one is correct...
Please please please!
Anyone has any suggestoons?