1337 4G modem not working after factory reset - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

EDIT: Turns out that it was APN settings being off for some reason. Its all fixed now.
I have not messed with modding my phone in LOOOONG time. Im trying to find info on how to fix this issue but I'm having a difficult time finding anything about it even though I know it used to be a big issue with the 1337 att s4's back when i got it.
I did a factory reset because my phone got super bloated. Now the 4G modem does not work. Everything else does without issue. Can make calls and send texts, use wifi etc. Just the modem stopped working.
I have an SGH-1337 ATT model with safestrap 3.62 (TWRP v2.6.3.0) on the phone and am using the stock rom slot. running android 4.2.2. Baseband is 1337UCUAMF3 kernal says "3.4.0-812098 [email protected] #1 Wed Jun 5 15:49:36 KST 2013"
I would really appreciate if anyone could help me out here.

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[Q] GSM Radio Connectivity Problem

Last week I got an unlocked defy from Amazon to use with simplemobile in the US. I activated a sim card and everything worked fine (data, calls, texts).
I made a backup with titanium back up, installed IML74K 4.03 AOKP build28 for Motorola Defy and all went smoothly. However, once it was loaded, I could not connect to the simplemobile network and would only get "emergency calls only"
Tried the baseband switcher v4.0, different frequencies and had no luck. In the attempt of reloading the ROM, could not get the phone to boot past the loading screen. Then I attempted to load a full SBF (T-Mobile_MB525_6.19.0_1FF). This resulted in a black screen, probably due to a version mismatch.
Then I flashed JORDN_U3_6.36.0_SIGNED_USAJRDNTMOB1B4B5DE1028.0R_JORDANTMO_P022_HWp3_Service1FF.sbf, and all worked...except connecting to the network. I still get "emergency calls only". I tried baseband switcher and 3gFixUSA found on these forums to no avail.
Does anyone have any suggestions for what to try to get the radio functioning again?
System version:
Blur_Version.3.6.190.MB525.T-Mobile.en.US
Model Number:
MB525
Firmware version:
2.1-update1
Baseband version:
EPU93ST2_U_03.04.02
Kernel Version:
[email protected] #1
BPflex version:
USAJRDNTMOB1B5DE1028.0R
APflex Version:
GAS_NA_JORDANTMO_P022
Build Number:
JORDN_US_6.19.0
I'm having the same problem on t mobile..... ugh.
I got it. I think.
Nevermind. seen you have used baseband switcher...
Does the baseband switch stick after reboot?
But, theres a 3g fix somewhere here... Try here.. http://forum.xda-developers.com/showthread.php?t=897445
Im not sure if that will help... cheers.
Yeah, I tried that exact 3g fix...is it possible that the radio firmware version is too old/too new/just wrong? Is it different than the baseband?
hollenbeck said:
Yeah, I tried that exact 3g fix...is it possible that the radio firmware version is too old/too new/just wrong? Is it different than the baseband?
Click to expand...
Click to collapse
I'm sure you tried all the basebands that it shows... Hm.. I had the problem until I switched to cm7 honestly.. I know the radio cant be old if it worked before. So. Im not completely sure... Except. Im on Tmobile :c
Interesting...well maybe I should try to install cm7 as well. Is there a specific build that you used? Also, did it work out of the box, so to speak, or did you have to do some more baseband switcher tests?
At this point I'm willing to try to replicate whatever worked for you if you would be willing to share what worked, I would greatly appreciate it
hollenbeck said:
Interesting...well maybe I should try to install cm7 as well. Is there a specific build that you used? Also, did it work out of the box, so to speak, or did you have to do some more baseband switcher tests?
At this point I'm willing to try to replicate whatever worked for you if you would be willing to share what worked, I would greatly appreciate it
Click to expand...
Click to collapse
Its the build by Shawnshine. But I'm.sure the other builds would work.. and yes mine worked out of the box. I just tried all the basebands for tmobile and one finally worked. Plus try playing with the sim card. I got mine completely bone stock. I came from a evo 4g and a 3D. But I wont have this phone for too long I'm getting a HTC one next month but this phone has been good to me.
Sent from my MB525 using xda premium

[Q] Galaxy S4 - crazy issues - Purchased from Afghan bazaar

Ok, im sure the title caught your attention. Im currently deployed in Afghanistan, and im weeks from coming back to the states. I bought a galaxy S4 from the bazaar here on my fob. After a couple days I rooted it with Odin and the MD5 root file was CF-Auto-Root-jflte-jfltexx-gti9505.tar.md5.
Ive been having trouble with the phone, ect. Widgets not working, wifi is sketchy, programs not loading correctly. I either figure its because of the software I put on it, or because I bought it here in Afghanistan. Im hoping that its the software and I didn't just blow some cash. Ive been searching the forums for a couple days now on this site as well as others, trying to download stock firmware for this phone, but im not exactly sure which to download. My intentions for this phone is to bring it back to the states and put my ATT Sim card into it. I could really use some help and it would be greatly appreciated. Heres all the phone information I feel could be needed.
Model - GT-I9505
android version - 4.2.2
Baseband version - I9505XXUBMEA
Kernal Version - 3.4.0-768421 [email protected] #1 Thu may 30 00:56:31 KST 2013
build number - JDQ39.I9505XXUBMEA
j.ying714 said:
Ok, im sure the title caught your attention. Im currently deployed in Afghanistan, and im weeks from coming back to the states. I bought a galaxy S4 from the bazaar here on my fob. After a couple days I rooted it with Odin and the MD5 root file was CF-Auto-Root-jflte-jfltexx-gti9505.tar.md5.
Ive been having trouble with the phone, ect. Widgets not working, wifi is sketchy, programs not loading correctly. I either figure its because of the software I put on it, or because I bought it here in Afghanistan. Im hoping that its the software and I didn't just blow some cash. Ive been searching the forums for a couple days now on this site as well as others, trying to download stock firmware for this phone, but im not exactly sure which to download. My intentions for this phone is to bring it back to the states and put my ATT Sim card into it. I could really use some help and it would be greatly appreciated. Heres all the phone information I feel could be needed.
Model - GT-I9505
android version - 4.2.2
Baseband version - I9505XXUBMEA
Kernal Version - 3.4.0-768421 [email protected] #1 Thu may 30 00:56:31 KST 2013
build number - JDQ39.I9505XXUBMEA
Click to expand...
Click to collapse
U might have to try ask on this attched forum since match your firmware and get more help over here SAMSUNG S4 GT-I9505 coz i read on HTC ONE XL forum AFGHAN version kinda tricky the way the firmware written......and maybe also same way with Samsung S4.....Goodluck....and Welcome back to US soon for HOLIDAY and we appreciated what u did to the country.....:good:

[Q] Canadian Note 3 Help

Hello. Please forgive me for being a noob, but I'll do my best to be precise.
But, I decided to sign up and create a topic here because I need some specific help and/or clarification.
(Sorry if I am perhaps not in the correct place but my brain is numb from hours of reading all areas here)
The story:
Purchased used Samsung Galaxy Note 3 in Canada originally on WIND Mobile. Unlocked phone for use on TELUS.
After a month, the phone ended up getting blocked IMEI due to it being reported lost/stolen.
Purchased "IMEI repair" service with free SIM unlock and sent phone away to "Joe The Android Rooter" (androidrooter.com) based on other's similar experiences and praise.
Received phone back, IMEI good, phone in good working order.
The problem:
The Note 3 with manual APN settings via a phone call with Telus only has Network Mode options WCDMA/GSM (Auto), WCDMA or GSM only. Phone gets 3G signal. Slow data speeds are fine, but my text messaging and phone calls rarely work where I live, which is a rural area. Dropped calls, lost texts, or no service. My Samsung Galaxy S3 does LTE and never has an issue. I would prefer to have faster data and reliable network/modem mode.
Called Telus again, and was directed to this thread here: http://forum.xda-developers.com/showthread.php?t=2489766
Have been reading around here wherever I could find information, and I'm not totally confident or clear about doing that.
It is all a little confusing to me so I need some straight forward help. I would be forever in debt.
The questions:
According to that thread, I would have to follow all those steps to enable LTE on my phone. What do I need to ensure that nothing has been modified with the IMEI repair so I don't run into any problems?
I tried the step of using the dialer for *#272*[IMEI]# and it brought me the options, and the Telus one (TLS) is listed. Can I just make that change, and voila? Or do I have perform root, etc? I'm just trying to make this easy and from what I read, I shouldn't even have been able to bring up that option through the dialer in the first place?
This thread here: http://forum.xda-developers.com/showthread.php?t=2618684 made me second guess everything.
The phone information:
AP: N900W8VLUCNB7
CP: N900W8VLUBMJ4
CSC: N900W8OYACNB7
Model Number:
SM-N900W8
Android Version:
4.4.2
Baseband Version:
N900W8VLUBMJ4
Kernel Version:
3.4.0-859721
[email protected] #1
Thu Feb 27 17:06:41 KST 2014
Build Number:
KOT49H.N900W8VLUCNB7
SE for Android Status:
Enforcing
SEPF_SM-N900W8_4.4.2_0017
Tue Jun 24 18:55:11 2014
Security Software Version:
MDF v1.0 Release 2
Shows as Official.
I hope I have provided all the info and posted in the right spot and I am very grateful for whatever help and clarification I could get.
Sorry for the length, but thanks for taking the time to read it.
-Adam, Canada.
You just have to do the 272 code to switch to Telus... You should have lte after that. But beware, this will completely reset your device... You will have to reconfigure it from scratch.
You might as well upgrade it to the latest firmware... Your baseband should be nb7 also... Or ni1 if you use the latest videotron firmware to manually upgrade. To your will still have to change the csc (272 code) to get the correct config from r Telus
Envoyé de mon SM-N900W8 en utilisant Tapatalk
Resetting isnt an issue or anything. My main concern is doing the code/csc change, still being able to do OTA updates, or at least over Kies. I'm happy enough sticking with OTA and TouchWiz and not toying around with the phone otherwise.
I've rooted (and loved) all my devices in the past (HTC, Motorola, LG) but had such a problem with my Galaxy SIII and when I tried to root it, not only was it the most difficult, but it turned it into a nice paperweight.
I got a good deal on this phone and like the size is all.
Mr3ff said:
Resetting isnt an issue or anything. My main concern is doing the code/csc change, still being able to do OTA updates, or at least over Kies. I'm happy enough sticking with OTA and TouchWiz and not toying around with the phone otherwise.
I've rooted (and loved) all my devices in the past (HTC, Motorola, LG) but had such a problem with my Galaxy SIII and when I tried to root it, not only was it the most difficult, but it turned it into a nice paperweight.
I got a good deal on this phone and like the size is all.
Click to expand...
Click to collapse
If you change the csc with the 272 code, you shouldn't have any trouble doing ota updates. All stock Canadian roms are exactly the same... You can download and install a bell rom on a Rogers device and retain your Rogers apps/config. Only the csc is changing... And this csc is there to reconfigure your device for the specific provider.
Worst thing worst, you will have to manually download and install the latest stock rom with Odin... And after that, you will be fine. But I really doubt that you will have to do this.
Well thank you!
I backed up the phone with Kies just to save my settings and simple stuff so I wouldn't have to do it again manually, but I don't mind doing it again if I have to.
Used the code to change the CSC, rebooted, LTE is working fine. Texts+calls all function like they used to without dropping my signal and stuff.
Just using Kies to restore little stuff and I'm good.
I checked to see if I have root, which I don't. What I wonder is why everything I read told me I shouldn't have been able to simply dial that code and change the CSC without rooting? I have seen a number of people having similar issues, but if it really was this simple without root, why is it not clear that you simply just need to do this? Heck, even Telus told me to root the phone. I didn't expect that.
Mr3ff said:
Well thank you!
I backed up the phone with Kies just to save my settings and simple stuff so I wouldn't have to do it again manually, but I don't mind doing it again if I have to.
Used the code to change the CSC, rebooted, LTE is working fine. Texts+calls all function like they used to without dropping my signal and stuff.
Just using Kies to restore little stuff and I'm good.
I checked to see if I have root, which I don't. What I wonder is why everything I read told me I shouldn't have been able to simply dial that code and change the CSC without rooting? I have seen a number of people having similar issues, but if it really was this simple without root, why is it not clear that you simply just need to do this? Heck, even Telus told me to root the phone. I didn't expect that.
Click to expand...
Click to collapse
You never have to root a phone to change the csc when the target csc is already included on your rom... Which is the case for the Canadian version of the note 3... It contains all csc for all Canadian providers (at least those that are selling it). And I think it's the same for all recent Samsung devices...
I believe You need root to change csc when the csc you want to use is not in your rom and you want to flash an other rom that includes the new csc.
tprevir had
How come then, such as on that thread here that initially sparked my willingness to do all this, was it not simply mentioned in there that one could just use the code and make the change, without having to deal with all the rooting/etc?
Of course rooting has many benefits, but some may just simply need the carrier/radio switch to enable LTE and nothing more - such as myself. (I'm okay with stock because of the S-Pen, but I am certainly considering rooting the device down the road, once it becomes "stale" to me)
As stated in http://forum.xda-developers.com/showthread.php?t=2489766 "Have a Samsung Galaxy Note 3 (model: SM-N900W8) and wish to enable LTE for a specific carrier? Follow these in-depth instructions and you will enable LTE for this specific model." which was the most comprehensive thing I could find via Google, but it really did make me wonder if it was all truly needed, to which it was not.
probably no one know at that time that all Canadian Note 3 were using the exact same rom...
that being said, not all SM-N900W8 are the same... this model is also used in other contries... so if one had bought it somewhere else, he would need to do more things to finally get LTE and/or the correct carrier apps.
The thread is from April... and at that time, I just had my device for a few days... and I did not know that we could only change the CSC to switch the configuration for an other provider. I learned a lot by reading on this subject here and there.
Envoyé de mon SM-P900 en utilisant Tapatalk
Maybe i'm wrong but i noticed you have NB7 Rom but MJ4 baseband and your problem is probably here. I bought a used note 3 and it was in the same condition. i wasn't getting LTE. If you try to upgrade your phone via ODIN, you have to go to download mode by powering off the phone first . If you go to download mode by any other way the modem partition is protected and will be not updated. I've reflashed the entire Rom and now i have NB7 baseband and NB7 Rom and i'm getting LTE with fido. Hope this helps!
Tornade69 said:
Maybe i'm wrong but i noticed you have NB7 Rom but MJ4 baseband and your problem is probably here. I bought a used note 3 and it was in the same condition. i wasn't getting LTE. If you try to upgrade your phone via ODIN, you have to go to download mode by powering off the phone first . If you go to download mode by any other way the modem partition is protected and will be not updated. I've reflashed the entire Rom and now i have NB7 baseband and NB7 Rom and i'm getting LTE with fido. Hope this helps!
Click to expand...
Click to collapse
That's what I was concerned about at the beginning (NB7 & MJ4) but my solution was to quickly backup what few things I wanted to keep from my phone (a few pictures, contacts, settings) and then do the *#272 code and select Telus. Once it rebooted, everything worked good as new. In fact, my up/down speeds are through the roof compared to the SGS3 that I had previously and for whatever reason the quality of sound in phone calls are dramatically increased. Like AM radio to FM.
Either way, doing that code, nothing else had to be done on my phone - no rooting, no tinkering and no hassle - other than entering the code and selecting Telus.

Struggling - Everything I Do Fails ):

So.. I'm struggling..
My mom has a Galaxy S4 (My old device, I now use a Note 4). I gave it to her rooted with a custom ROM about 2 years ago from now. It's been having random problems and it's so outdated, I decided I would get her a new ROM and fix up her phone.
Backed up all her pictures, all she wanted, and got prepared to install a new ROM. I found one in the forums here called [ROM]【5.0.1】Google Play Edition 【JFLTE-GPE】 - 01-28-2015.
So I downloaded it, and using Philz recovery I wiped all data and installed the ROM.
Calling doesn't work. Try to call someone phone turns off. At full brightness the phone seems like it's at what 40% brightness would be. And I'm sure there are more little problems here and there I would encounter, but I need to get this fixed ASAP because she has work tomorrow and she NEEDS a working phone. Edit: Just noticed on the Lockscreen it also says NO SIM CARD - SPRINT
So, since this didn't work, I searched YouTube for a video on how to unbrick/unroot the Galaxy s4 back to stock, found a video, involves Odin, followed steps exactly, getting a FAIL red bar in Odin. Great.
So I Prefer her to have a working Lollipop ROM, the one I found looks great just can't get it working. Otherwise, getting her phone back to unrooted/no custom rom completely Stock Sprint galaxy S4 would be great.
LolliPop ROM > Completely Stock Sprint Galaxy S4 > Where I'm at now.
I'm not entirely sure, but I think my problem may have to do with the firmware? Really not familiar with this stuff :/
Here is the device info:
Android Version: 5.0.1
Model: GT-i9505G
Baseband Version: L720VPUEMK2
Kernel Version: 3.4.105-GoogyMax3_GE5-v1.2.7 android @Gpe #26 Fri Jan 16 23:11:58 WET 2015
Build Number: LRX22C.20150128
Please any help, need her phone fixed ASAP or I'm Dead! haha!
I've made some progress.
I now have the Calling and Texting working perfect, it does recognize a SIM card, everything involving mobile data and connection works great.
The only problem now is the Screen Brightness. The best way for me to explain it, is it's like a Normal Galaxy S4, but the brightness is limited to between 20% and 40%. Meaning, if you put a normal Galaxy S4 on 20% brightness, that's my Galaxy S4's LOWEST. And my Galaxy S4s highest is what a normal galaxy S4 would be at 40%. Completely unacceptable d:
Any suggestions?
NEVERMIND NEVERMIND NVERMND NEVERMIND SOLVED SOLVED SOLVED SOLVED SOLVED.
In settings, under display, turned off adaptive brightness. Boy do I feel stupid!

GoldenEye and LTE

I recently upgraded to GoldenEye 53.
Ever since installing this ROM I seem to be having issues with LTE reception. It's not as consistent as it used to be. Sometimes I won't be able to get data, and then if I turn mobile data off and on again using the control panel, it will start working again.
My baseband version is i337ucug0c3 in case that matters.
Any ideas?
I have the exact same issue...... thinknig of updating Baseband to NJ4 as that seems to be one that alot of people are using!

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