[Q] Wifi and LTE not working after going to stock - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

Hi, I have an S4 that I got from rogers (i337m). When I initially rooted it I was running cyanogen mod ROM but I had around 5 GB of storage missing. I read from somewhere that going back to stock would fix this problem. I used Odin and followed a guide and went to stock 4.2.2. However, now my WiFi and LTE is not working and I'm having trouble making calls.

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[Q] Omega ROM on I337M

I successfully flashed i9505 Omega ROM v7 on I337M (Canadian)
Everyhing works fine but the wifi. I can't seem to turn my wifi on.
Tried looking into it, something about flashing a kernel. So I tried but doesn't work...
Anybody else have same problem that can help me?
Did you manually add in your apn settings, because that rom does not add them automatically, and you said you flashed a different kernel, was it one for YOUR device...i337m kernel?
These 2 things will get you data and wifi for sure.
The Ax says good luck!
v11 on i337m
I didn't want to start a new topic as this one seems to be titled correctly and am hoping to keep XDA clean and getting all the Omega Rom and i337m questions in one place.
I installed Omega v11 on my i337m (Samsung s4) and the ROM worked perfectly however I was no longer able to bring up my IMEI number. When entering *#06# my phone would just show a black screen where the number should be shown. I of course got scared and ran around in circles for a while before calming down and flashing stock FIDO firmware. (phone was originally rogers, was unlocked and used on bell then sold to me) I rooted the phone, installed Omega and then had the issue with it not being able to show the IMEI.
Flashed Omega v11 for i9095
(also bought the omega files pro app because it's a bad ass ROM.) Hoping to go back to it but need to clear up this issue.
Any ideas on why this would happen?

[Q] Cannot reach LTE!!!

Hi all! When I got my phone I was able to use LTE 4G on it, and when I rooted and installed a ROM, I was only able to use H+ (maximum). Which is really slow. I've tried different kernels and roms but no success. Now I have the Original Unrooted Samsung Firmware (Hungary/ BASEBAND: I9505XXUDMHA /ANDROID 4.2.2) Please help me!:'( Thank's

[Q] Cyanogenmod on USCC S4 issue

I had an issue where when I installed Cyanogenmod that my S4 was stuck in roaming. USCC tried for two hours to get it working but then filed for a replacement under warranty. Well I got this one running after trying many things. I used ODIN to go back to kitkat and followed this post.
http://teamuscellular.com/Forum/topic/2592-last-attempt-to-fix-stuck-in-roaming-mode-for-the-sgs3/
It worked and fixed the roaming issue and now I can use my phone as like before.
I want to use Cyanogenmod but what can I do to avoid this issue again? Also, where can I find other ROMs compatible with my device?

[Q] Help needed, no cell service 4g works

Hi guys,
I messed up my gf's s4 last night. Was previously using sacs custom on a mf9 base (unlocked, twrp) Tried updating to Aokp so she could use her new G watch. I was messing with the radio settings after flashing aokp for whatever reason, using Radio Switcher from the market, and now the phone no longer has service. 4g works for whatever reason but no 3g, calls or texts come through. Tried one click odin back to stock mf9 in hopes it would work, but no cigar. Any help guys?
Thanks
Mods please close, ##72786# from the stock dialer fixed the issue.

i9505 i337m canada mobile network connectivity

Hello All,
I have a samsung galaxy s4 i337m in canada using the rogers netowork. Ive been using customs roms shortly after i got this phone. Ive used samsung rom, original, GPE but eventually settled on Cyanogenmod. I use TWRP for the i9505 which allows me to use any rom (since CM12 doesnt have a build for the i337m, and other builds wont flash in a i337m TWRP).
Anyway ive been using CM 12.1 with a i9505 build for some time, and it works great. I had to update my modem to the NI2 build to get it to work, but its been working flawless ever since.
Now to my problem, buddy has an S4, same model, same carrier. He claims he needs a new phone and i beg to differ. I rooted, installed twrp (i9505)and cm12.1 (i9505). works great, however no network connectivity. I remember i need a new modem, try the same one that works with mine....nothing... try a different one.... nothing. calls and SMS, but not data of any speed.
Reverting to kitkat roms results in it working perfectly (multiple modems). both from his original Nandroid and CM 11. All lollipop roms seems to have the same issue, no mobile data. Wifi works fine. No issues with SIM card, switched them between the two phones and confirmed its HIS phone with the issue.
Im a little puzzled, can someone recommend a modem to load? should I try to use TWRP an CM12 for the ATT variant/ different variant? I want to help him but this is making me look amateur (even if its true).
Thanks ahead of time.

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