No more LTE... - Galaxy S 4 Q&A, Help & Troubleshooting

After changing SIM with a new one, LTE simply doesn't work anymore. I tried swapping other 3 new sims, disabled and re-enabled LTE with the operator, they did a new profiling of my sim card... I simply don't have LTE anymore on the phone.
Running the latest 4.3 DBT firmware, never rooted, always stock, did a factory wipe via recovery after the update to 4.3. I do have the LTE/UMTS/GSM option in the menu, but the phone simply doesn't lock on 4G.
Any help out there?? :crying:

Related

[Q] [Issue] Stuck in a weird situation of trying unlock i337m

Before you judge me by saying how i'm posting something thats done before, it hasn't, I've searched everywhere no methods work
Please, someone help me I've been at this for 4 days now and maybe just 15 hours of sleep :crying:.
The phone I have right now is the SGH-i337m Galaxy s4 running NC1 with MDJ modem (Kitkat 4.4.2) Does not detect sim, it says "No sim available".
I'm not exactly sure if the phone is from Bell but the phone use to be running fine on my old rogers sim card until I updated to their new ShareTap Sim.
With the ShareTap Sim the phone doesn't detect my sim anymore. So I tried my Share Tap Sim in another unlocked phone (Galaxy note 3) it worked fine.
Then I tried a Virgin mobile sim card on the S4 and it detected it and worked fine also. So then I tried to unlock it by flashing it with many different methods:
1. I tried flashing a older version of Bell 4.2.2 but it bricked my phone ( I already unbricked it back to 4.4.2)
2. I tried flashing the MDJ modem but it doesn't show the hidden menu.
3. I tried flashing ATT modem to try it but that also bricked my phone.
4. I tried to use the AWS tutorial shown here
5. I tried the regionlock away tutorial here in the third method (RegionlockAway doesnt do anything to my phone)
6. I pulled the modem.bin from the TAR file from sammobile of Bell's 4.2.2. But it still doesn't show the hidden menu! It's the MDJ modem but it still doesn't work!
I'm not sure whats wrong with my phone. When I put the Virgin mobile sim card in there it only shows Telus, EXT and Virgin Sim networks available not the whole spectrum which is what is supposed to happen with the 337_aws.qcn file from the AWS tutorial. Then when I flash MDJ modem from bell or the one from this dropbox link: https://www.dropbox.com/s/2m3id2cx4l...37MVLUAMDJ.zip
It still doesn't show my secret menu.
The secret menu I'm trying to access is the *#0011# but if that didn't work I also tried the *#9090# It still doesn't show the secret menu. So what do I do now? Please Help!
Thanks for reading!
Sorry to hear that, but you are in the same situation i was, the phone was probably sim-unlocked by Box Software, like Octopus or Z3X Boxes as i did, the phone won't recognize some sim cards by unknown reasons, there is no fix avaliable for this as i changed imei, tried different NVM from other phone & even replacing sim card reader. i finally sold it & got myself a i337m unlocked via code.
Edit:
forgot to mention, My SIM stopped being recognized when i upgraded it to a newer LTE version
Kind regards.
Have you tried stock NC1 with the included modem? If the device is unlocked, you might have better success with SIM recognition. In my case, my device was not unlocked, so I Odin flashed stock Telus MDJ, then rooted with CF-Auto-Root, unlocked with RegionlockAway (KNOX tripped), and applied the AWS Mod.
Then I flashed stock NC1 with the incl. modem (root gone), and managed to get Rogers LTE and Wind H+ on the Telus device. From there, I OTA updated, and rooted with CF-Auto-Root, flashed TWRP, and worked my way to 5.0.1. Trust me I know how frustrating this can be, but thanks to this forum, there was a solution. Here's what worked for me (link). Good luck.

[Q] SIM Card issue

Hi all,
I have a strange issue that I don't know how to fix.
This evening while using my phone I suddenly got SIM card not recognized message. I have tried these things to no avail:
-In "Settings" I can find my networks but my phone won't connect on them
-Powering down, pulling my SIM card out and reinserting it. No change
-Since I'm on CM12 I did factory reset and rolling back on previous versions of Nightly's. Still no change
-Again doing factory reset and installing SlimKat 9.0. No change
-Rolling even more back after another full wipe to SlimKat stable 7.0. Still got "Insert Sim Card"
I have flashed latest modem and bootloader when I migrated from SlimKat to CM12 since I was loosing signal when locking phone and that worked all until this evening.
Can anyone help please?
EDIT:
The model is GT-I9505 jfltexx
Update:
Just installed, again, 2/3G and LTE modems... no change
Inserted SIM card fro my wife... no change
You likely have a hardware issue. But before you go and replace the SIM card slot, revert to a stock ROM and see if that resolves the issue. Start with stock 4.4.2 and see if that works, then roll back to stock 4.2.2 if it doesn't. With luck, rolling back to one of the stock versions will resolve your problem. If it does, then you should be able to migrate back to SlimKat. If it doesn't, it will cost you about $10 USD (€9.41, BAM/KM18.35).
I encountered the same issue, and in my case not only was the SIM tray damaged but I had also lost my SIM unlock. Only by downgrading to 4.2.2 was I able to figure out that the SIM unlock was gone, but it wasn't until I had replaced the SIM card slot that I could do something about it.

[Q] Upgraded to Android 5.0, Lost LTE

I just upgraded to Lollipop and lost LTE. I have EHRPD 3G only.
I am rooted and on Extreme Syndicate 5.0 Lollipop.
I have tried the usual items found in Google:
1) Removed SIM, rebooted. Put back SIM
2) Checked LTE settings under mobile networks (Global, also tried CDMA/ LTE)
3) Checked APN (vzwinternet, internet and VZWINTERNET)
4) Tried basic toggling of airplane mode, data, etc.
I am trying to avoid going back to kitkat stock and working back to lollipop.
I am hearing that a new SIM may be required but I have not gone that route yet and would like to resolve right away rather than taking a day for a SIM to ship to me.
Any help is appreciated.
Have you factory reset the phone after the update? It would be something to try.
JerseyFF said:
Have you factory reset the phone after the update? It would be something to try.
Click to expand...
Click to collapse
I tried numerous things. Right now my LTE has come back however things are kind of strange when I reboot, but at least ultimately end up working. I have a new SIM to throw in there when I lose things entirely again. I'm now sort of convinced that the problem is the SIM as I have tried a few different ROM's including stock unrooted KitKat and data always acts the same. I'm now on 5.0 and it's again the same.
Hello, after upgrade to 5.0 my s5 verizon, i lost 4g, but on 4.4 it worked fine in russia

Help, i337m won't stay locked to WIND

Hello, ive acquired a Rogers s4 i337m that has been sim unlocked and rooted, and possibly aws enabled. It has worked for about two months on Wind with no issues and all of a sudden it started dropping signal and lock into roaming mode.
I've done many firmware upgrade and downgrades, flashed custom ROMs and different modems. Formatted the /system, data, cache, dalvik.
On a fresh install it looks like it works. Until I put the phone away. After about 30min to an hr the phone automatically switches to Roaming and I don't even have an option to select Wind as a network provider.
Anyone with similar issues could please xhime in?
Just switched to 4.4.2 bootloader and modem (NC1), with Kangapop Rom
Anyone?
Keep switching firmwares and different modems, as well as playingwith Debug Menu. It will stick to Wind for 5-10min with choppy signal, then switch to roaming and never give me Wind option again
ValS4 said:
Hello, ive acquired a Rogers s4 i337m that has been sim unlocked and rooted, and possibly aws enabled. It has worked for about two months on Wind with no issues and all of a sudden it started dropping signal and lock into roaming mode.
I've done many firmware upgrade and downgrades, flashed custom ROMs and different modems. Formatted the /system, data, cache, dalvik.
On a fresh install it looks like it works. Until I put the phone away. After about 30min to an hr the phone automatically switches to Roaming and I don't even have an option to select Wind as a network provider.
Anyone with similar issues could please xhime in?
Just switched to 4.4.2 bootloader and modem (NC1), with Kangapop Rom
Click to expand...
Click to collapse
back up your phone in kies first.... incase....take sim out... upgrade to new software... go in recovery and enable cp logging. and clear cache... dont have to do factory reset but if you want to have a clear head go for it... then push the aws via qpst... once restart push the phoneutil.apk via sd card... restart with phone. and that should fix the prob
:good:

Unlocked, wont connect to data

Hello again. I decided to buy 2 sprint branded phones. One came sim unlocked. I used the NV method on the other. On both I can place calls, but data says disconnected. The APN's were downloaded straight from the provider (att mexico). And I compared the apn setting with a working M8 with the same sim.
I have tried full reset, and changing prefered network type in *#*#info#*#* menu. All it does is say disconnected. Am I missing something?
Update: got it working by flashing a custom rom. I used viper (selecting unlocked version on carrier select screen)

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