yashsingh1/xdaforums huggingface dataset:
[T-Mobile Samsung Galaxy S 4] c627627:
Running CyanogenMod 11 on T-Mobile Galaxy S4 and getting random network signal drops.

Where is the list of latest modems I can get for it, the network is Walmart Family Mobile?

EDIT: I think it just goes to some kind of power saving mode but does not loose ability to receive calls or texts.

By the way, to answer previous poster's question:

• To unlock the phone:

Go to Phone Dialer and enter *#27663368378#

The screen will change to the hidden menu as soon as you hit the last # key in the dialer:

[1] UMTS > [1] DEBUG SCREEN > [6] PHONE CONTROL > [6] NETWORK LOCK >

[3] PERSO SHA256 OFF > SHA256_ENABLE_FLAG > Now press the Menu button in lower left corner > Back

Repeat pressing the Menu button in lower left corner > Back > until you get to UMTS MAIN MENU

> [6] COMMON > [6] NV REBUILD > [4] Restore Back-up

Phone lights up and auto reboots. Galaxy S4 can use any microSIM card on any network.

The only way to check if the phone has been unlocked is to insert another carrier's microSIM card. There are no codes to enter into dialer to check status.
[T-Mobile Samsung Galaxy S 4] jasonwilson75:
s4

Code does not work. Have seen in another post to use *#0011# if I use that code I can fet into hidden menu, but when I het to network unlock/ only option is [1]perso sha256 info. Ifmi select it shows sha256_enable_flag [1]. If i select that it sends me back to first screen u come to after putting code in.
[T-Mobile Samsung Galaxy S 4] SheepReaper:
Unlock your S4 without a non-accepted sim card

Enter #7465625*638*# in the dialer (i hope that's obvious).

I had a very hard time finding this information. It's been a while and I don't recall where I found the answer. But when I did, you can be sure I wrote it down. This code forces the unlock code screen to pop (The one you would normally see if you booted the phone with a non-accepted sim card). My Carrier is T-Mobile, so I can't be certain that it works for all S4 variants, but I can't fathom why the only way to pop the code input is to boot with another sim. It's an applet so there must be a way to directly launch it, and here it is.

So notes: you need an unlock code from your carrier. If you're the original owner and the EIP has been satisfied, your carrier should give you no problems. My code arrived in just under 48hrs. Oh and make sure your device is powered on and has a sim in it. (I don't know if this really matters, but I had SGS4G that had been unused and unpowered without a sim for several months, T-Mobile couldn't (or wouldn't) unlock it unless it was registered on the network for 3-5 consecutive days. Don't know why.) Anyways, I don't much rely on T-Mobile tech support as their unlocking email says to use a non-tmobile sim. So they don't even know about this code apparently... And neither does the rest of the internet. All other guides make you use a non-tmobile sim.

--

Be kind rewind up-vote
[T-Mobile Samsung Galaxy S 4] AlphaDecay90:
Hey, thanks for the link. After reading that thread I'm not sure that I have the same issue. My phone was running basic CM11 with nothing else, no alternate basebands or modems or anything. I had no notifications or anything about a possible OTA update. Also, unlike that poster, I'm not able to get to recovery at all, no matter what I flash. Only download mode. Regardless of weather or not I try to do vol up+home+power to get into recovery or if I try to boot normally, it still only shows me "Recovery Booting". I don't think that this is just a bootloop issue.

At this point, should I maybe move my issue out of this thread and make a post on the Help and Troubleshooting board for better visibility? Sorry, I'm kind of an XDA noob...

I'm at my wits end at what to do. I've temporarily had to go back to my old GS2 which has really reminded me why I upgraded... ;)

---------- Post added at 04:05 PM ---------- Previous post was at 03:58 PM ----------

Also, forgive me if this is a dumb question, but is it possible for me to install a custom recovery/flash AOSP roms on stock 4.4.4? I seem to remember a while ago that it wasn't possible for some reason or another, but I was on 4.4.2 stock so I didn't worry about it. Maybe I'm wrong. That's the only reason I haven't tried flashing the stock 4.4.4 firmware.
[T-Mobile Samsung Galaxy S 4] malikji:
how to Change rom of S4 UVUEMK2.. andriod 4.3

I m using tMobile S4 . Baseband UVUEMK2.. andriod 4.3..cellphone is carrier unlocked. And region unlocked. I m using it in south Aisa. Its rooted phone using auto-root by chainfire.

if I change rom to CM,is it again country locked and carrier locked. :(

Please refer me to the helpful thread.
[T-Mobile Samsung Galaxy S 4] a103:
No it won't. You can flash any compatible ROMs you want and the carrier unlock will stay the way it is.
[T-Mobile Samsung Galaxy S 4] malikji:
full guide

Thanks.. please send link of complete and full guide about changing ROM.

which rom is better dn stock rom. ?:confused:
[T-Mobile Samsung Galaxy S 4] a103:
Search on you tube mate or visit galaxys4root.com
[T-Mobile Samsung Galaxy S 4] spector711:
If I'm currently on stock 4.4.4, what are my options for installing roms? I've tried so many different combinations of rooting and installing recovery and end up having to keep using odin to flash back to 4.4.4 stock. Even the Odin instructions in this thread (http://xdaforums.com/showthread.php?t=2258628) give me an error when I try to flash the listed files there.

Any guides for this if you're starting at 4.4.4?
[T-Mobile Samsung Galaxy S 4] a103:
Root using Towel root app. Install Flashify from play store. Then flash twrp 2.8.1.0 and finally clean flash the ROM you want. Thats what I did.
[T-Mobile Samsung Galaxy S 4] malikji:
Annoying Pop Up message.

How to disable this annoying pop up msg comes again n again.

my cell is TMobile S4.. region and carrier unlocked.

any one have idea about it.
[T-Mobile Samsung Galaxy S 4] Skipjacks:
That should only pop up once on first boot.

Try disabling wifi calling in general in the settings.
[T-Mobile Samsung Galaxy S 4] .Wolfie:
Just got my M919

Brief history: Originally got an I337, had problems with it, sent it back, ordered a black M919 from a second company (first didn't offer the M919), received a white I337, sent that back and ordered (and received) a black M919 from an eBay seller (roughly 140k 99.1% ratings).

It's using Android 4.3.

Now the newb question...

I would like to be able to do the following...

1. Check to make sure Knox isn't already tripped.

2. Root without tripping Knox

Also, does rooting automatically include a recovery mode or is that separate? If it's separate, I also want to be able to have that, again without tripping Knox.

In short, assuming Knox isn't pre-tripped, I want to keep it that way but also have recovery mode and root it.

A link to a dummy-friendly guide would be highly appreciated. I was about to install towelroot, but decided I better hold off until I can be sure of what I'm doing.
[T-Mobile Samsung Galaxy S 4] Skipjacks:
If you are on 4.3 then its probably already Knoxed.

You can check for sure by booting to download mode and seeing what it says in the upper left hand corner. If it says knox 00x00 or something like that, its already Knoxed up.

However.....its not a big deal. Knox does not get in your way of rooting at all, nor does it have any impact on root operation. Its only a warranty thing. Rooting voids warranties anyway. Its part of the game.

Rooting by itself does not add a custom recovery. Recovery and rooting are two separate things.
[T-Mobile Samsung Galaxy S 4] .Wolfie:
Thanks, that proved useful.

Sort of figured that out after making the post, went searching for more information. I'm not really worried about a warranty, just want to be able to do OTA updates. Unless I'm mistaken, it's my understanding that when the flag is set, OTA updates become unavailable. Not really interested in custom ROM's, just being able to be rooted. So I might be fine at this point, just need to update to 4.4.2.

Thanks for your reply, didn't know about using the download mode to view the knox status.
[T-Mobile Samsung Galaxy S 4] ed92:
don't know what to do I try to turn on wifi but it just won't. any solutions before i go to tmobile?
[T-Mobile Samsung Galaxy S 4] Skipjacks:
Factory reset?
[T-Mobile Samsung Galaxy S 4] ed92:
i've done that and nothing
[T-Mobile Samsung Galaxy S 4] a103:
If you are on a custom ROM then try to install a different one and see. Last resort would be to go back to original firmware.
[T-Mobile Samsung Galaxy S 4] ed92:
yea i was on chaos rom went to bhp rom and now on stock still doesn't work
[T-Mobile Samsung Galaxy S 4] MauiKeith:
Return SGH-M919 with dead screen and UVUAMDL bootloader to warranty stock.

So I rooted my device and was using custom ROMs happily for a year. If I ever needed warranty service I could always return to stock. What could go wrong?

Well, suddenly the screen failed. This presents some challanges. And oh, after pulling my hair out on this, I have to solve it within 36 hours to get a warranty repair.

If I had a working screen the procedure would be simple:

1. Wipe system and cache partitions

2. Odin Original Stock UVUAMDL ROM (M919UVUAMDL_M919TMBAMDL_M919UVUAMDL_HOME.tar.md5)

3. Odin CF Autoroot to get root

4. Install Triangleaway

5. Run Triangleaway to zero flash counter

6. Odin Original Stock ROM again

Questions:

I'm having trouble figuring out how to do 1, 4, and 5 without a screen. Right now I have stock recovery installed, but I can Odin CWM patch. I'd rather not unless I must, tho.

1. Is there a way to wipe system and cache partitions before flashing using stock recovery?

2. If not, where can I find the menus for CWM recovery so I can do this blind

There is a screen mirror client using ADB I can use to get 4 and 5 done if I can turn on USB debugging somehow.

It seems the easiest way to do this would be to flash a kernel with unsecure USB debugging enabled by default.

3. Does anyone know where I can find a compatible kernel? (UVUADML friendly, root friendly (SETUID enabled), unsecure USB debugging enabled by default)

4. I saw a thread somewhere tellling me how to edit some properties to do this using the Android SDK to force USB devugging on this but I can't find this.

Thanks for any help.
[T-Mobile Samsung Galaxy S 4] GhostSamuraiX:
Easiest thing to do is to just download Samsung kies and let it restore it to back to factory. An honestly I would just take in as it is. I've taken two phone into T mobile for warranty and they didn't care it was rooted and with a custom ROM.
[T-Mobile Samsung Galaxy S 4] Skipjacks:
I have replaced multiple rooted phones under warranty with t mobile as well. Its never been am issue.
[T-Mobile Samsung Galaxy S 4] GhostSamuraiX:
Yep yep. I even took a GS3 in that I had hard bricked on purpose lol and me and the T-Mobile employee were talking and I even accidentally said I bricked it and he didn't care lol.
[T-Mobile Samsung Galaxy S 4] Mystique:
Hello and thank you for this thread..

Long story short I'm looking for confirmation about all that I have been reading b/c frankly, it is confusing..

I am looking at swappa and from this and other threads here is what I think I understand.. (please correct where ever and however).

ANY M919 can be unlocked and rooted just like the i9505. Versions of the M919 beyond MDL include knox and all of its awesomeness.

Which only comes into play - should a warranty question come up. Would flashing an ODIN MDL image reset knox at that point? (I see #3035 and agree with "no one cares" - generically. Specifically used phone via swappa gets no love anywhere anyway..) (Question 1)

I am looking for this device to play nicely with AT&T, GoogyMax, iB4STiD, Slim LP, and others.. I should treat this device like it's an i9505 and keep the AT&T APN handy. Should have no problems relating to the specific M919. Correct? (Question 2)

My wife and I currently have an i9505G (Google Edition Device) and MDL I337. The i9505G has random AT&T network issues, all the bars drop and come back, rebooting the phone takes up to two minutes to get any bars (cellular), then two minutes after that HSPA+ kicks in, and then randomly LTE will kick in eventually.. The I337 boots up with signal and LTE almost instantly. Both devices running the same ROMs. Can I expect the M919 to act the same way as the i9505G because it is not a native AT&T device? (Question 3)

If I do get an MDL (bootloader) there is that issue of 'when the phone is powered off it will not charge'; If do no not care about knox I can upgrade to the latest bootloader offered via tmo xda forums? Other than charging is there any other benefit of doing that? (Question 4)

I appreciate any time that anyone takes to read these questions and would greatly appreciate input or comments as well.

tl;dr AT&T user thinks that an M919 will work perfectly on AT&T. You can unlock it to; any version any time. Even beyond MDL.
[T-Mobile Samsung Galaxy S 4] lalec:
If you have USB debugging enabled this may help:

http://xdaforums.com/showthread.php?p=53482464
[T-Mobile Samsung Galaxy S 4] Guatiao:
Bluetooth phone dongle issues even after phone replacement

Ok, hi all, here's my issue. I can connect my phone to my Plantronics Bluetooth dongle, and after making one or two calls, phone audio and voice die. i can dial a number, but I can't hear the other person, nor they can hear me. i have read bout this being possibly caused by an app, but I have not been able to pinpoint an app that may be causing it.

I got a brand-new replacement under warranty, and the exact same problem happens. i tried connecting other Bluetooth accessories to replicate the problem, which indeed I can do.

Both phones were/are stock, non rooted, using the latest official KK build. Previous versions (4.4.2 and 4.4.3) had the same issue.

If anyone has any idea as to what may be causing this (faulty Bluetooth programming maybe?) please let me know, thanks!
[T-Mobile Samsung Galaxy S 4] lalec:
I don't know the answer to all of your questions but I can help with a couple of them:

1) Once you go past MDL bootloader you can never go back. So your ability to completely hide the fact you were experimenting with different ROMs is gone.

2) Theoretically, since both T-Mobile and AT&T are GSM, the phones can go back and forth as long as they are not SIM-locked by the carrier. I'm not sure if this is still current but a couple of years ago people were installing some type of AWS patch to facilitate the transition because although both carriers support the GSM frequencies, they may have used each of the frequencies for different purposes. Also, I think you'll need a carrier-specific kernel.

3) We have two MDL phones in our home and both charge just fine with the phone power off and we've never had a problem with it not charging.
[T-Mobile Samsung Galaxy S 4] harshmbhatt:
Water Damage Help

Hello All,

I don't know if this is the right place to post this, but facing a problem with my T-mobile S4 so posting here...

Preface:

- I accidentally submerged my device by accidentally leaving it in the wash, but took it out before the cycle started

- I immediately removed the battery, SIM card and micro SD card and threw it in a bag of rice

- After 24 hours I took off the plastic backing to expose the PCB, in hopes of drying it out thoroughly and put it back in the rice bag

- I left it in there for about 3 days before taking it back out and attempting anything

- I was running the latest stable build of CM11

Problems/Trials:

- I tried to charge the battery after I took the device out and I noticed the charging light wouldn't go on when I plugged it in [first bad sign]

- I then tried to just do a normal boot up and it hung at the bootup Samsung S4 logo

- I tried to boot recovery and it hung at bootup logo again with blue text on the top left ("booting recovery")

- I tried to get into download mode and it worked [yay?!]

I have tried to flash stock recovery using odin, followed the "unroot" guide here using the "T-Mobile Galaxy S4 Stock Firmware (4.4.2 - M919UVUFNB4)" stock ROM

When I try to flash "T-Mobile Galaxy S4 Stock Firmware (4.2.2 - M919UVUAMDL)" Odin fails and doesn't give me a success.

After I flash a stock ROM, the device hangs on the blue recovery screen and I am not able to wipe cache and restore to factory.

I have also tried to flash a custom recovery, in hopes of booting in recovery - but no luck.

I have also used Kies' "emergency firmware recovery" which has succeeded, but gets stuck on bootup logo.

I've read somewhere on the forums that if you can get your device into download mode, there is a way to get your phone to work. Not sure how accurate this is, but maybe someone can help me out here.

If my phone is doomed - of course water and electronics don't mix after all - does anyone know any reliable sources for replacement motherboards or other individual parts by any chance?

Thanks for any help in advance!
[T-Mobile Samsung Galaxy S 4] lalec:
1) If you once had NB4 (4.4.2) you can't go back to MDL (4.2.2). First, be sure you are trying to restore the correct firmware version. If you had NB4 you should be trying to restore that one (all of the stock ROM versions are available for download - you should be able to find the thread with a quick search.

2) Probably best to avoid trying to unroot and install a stock recovery at this point. You're making so many software changes it makes it harder to diagnose the hardware.

3) Phone may not have spent enough time in the bag of rice. It takes a long time to dry it out that way. If you have a place where you can leave it in sunlight warm enough to speed the drying process but not hot enough to further damage the electronics, it doesn't hurt.

4) I've only ever experienced one water-damaged phone. For that one, I tried rice for 24 hours and experienced many of the same symptoms as you but then I stumbled upon some threads advising bathing the phone in pure rubbing alcohol (if you can find it). The purest I could find was about 97% and I removed the battery and gave the rest of it 3-4 alcohol baths over a 2-day period. Theory is that alcohol will help you remove all the water and it dries quickly without leaving any corrosive residue that can further damage electronics. There is a good chance you damaged at least one piece of hardware. In my case, I ended up having to buy a use logic board off eBay to get my phone working again. Even after I got it working it was a couple of months before the display was perfect again. These are some websites I've used in the past for parts or repair service:

ubreakifix.com, etradesupply.com, ifixit.com, and eBay (you might get lucky and find someone who broke their display but everything else is working and they are selling parts)

Also, with respect to the statement you read about being able to make your phone work again if you can get it into download mode, that statement is taken partially out of context. It was intended to cover situations where you soft-bricked your phone by flashing something you shouldn't have, etc. and doesn't necessarily apply if you have hardware damage.

Good luck.
[T-Mobile Samsung Galaxy S 4] harshmbhatt:
Thanks lalec, appreciate the prompt reply.

I forgot to mention that I did bathe it with rubbing alcohol (95%) after I took it out of the bag of rice. There seemed to be some water damage/corrosion on the side of the PCB not exposed when you take the back casing apart. I cleaned that thoroughly with rubbing alcohol. The mains of the board didn't have any corrosion.

I couldn't remember if it was MDL or NB4, so I tried flashing both - but I guess I must've flashed NB4 before I flashed MDL. Is there any way to flash a rooted MDL ROM at this point?

I am just a bit skeptical about buying things like these from eBay, but will give that and the other links a search - thanks for those! Luckily, my screen seems to be working fine and no noticeable damage there.

Just to clarify, I have already tried installing all the ROMS. The phone was water damaged about 3 weeks ago and has been lying around since my trials.

Thanks once again!
[T-Mobile Samsung Galaxy S 4] jfernandezv:
Is any way a I can enable APN settings from insane V6 4.4.4 KK. I can't edit anything ....
[T-Mobile Samsung Galaxy S 4] Skipjacks:
Your best bet for help is to ask in that ROMs thread. You will have a higher number of people familiar with that rom who might know the answer
[T-Mobile Samsung Galaxy S 4] MoltarTheFabulous:
Wi-Fi shutting itself off after restore to factory

So I was helping someone out who had a phone with cyanogen mod which was installed by someone else. They have no clue what they are doing and basically since I haven't done much with this phone myself I told them I would be happy to help them restore factory and that is it because that was all I am comfortable doing.

So I flash with odin back to factory and they got home and noticed every time they try to turn on wifi it turns off immediately.

I search here for wifi and I get thousands of threads that dont seem to help.

Do I need to flash the modems? anyone have any ideas?

Thanks for your help.
[T-Mobile Samsung Galaxy S 4] cristhiansancan:
Can I, install a rom for S4 9505? on my m919?
[T-Mobile Samsung Galaxy S 4] Yourfavoritenoob:
Are there any ways to stop/skip "installing system update"?

It is so damn easy to get into system update these days. Any idea how to get out of it? Have anyone actually considered doing it by so far?

After the device turned off... and of course on. When it turned on there was blue text written: "Recovery booting" on the top left. And after that it was written "installing system update". Are there any possibilities to avoid this installing system update?
[T-Mobile Samsung Galaxy S 4] a103:
Not unless you're rooted.
[T-Mobile Samsung Galaxy S 4] Yourfavoritenoob:
Still a problem

If without root then?:confused:
[T-Mobile Samsung Galaxy S 4] a103:
Just don't accept it. Don't select yes ahech it asks to update the firmware.
[T-Mobile Samsung Galaxy S 4] Frankenscript:
You probably flashed a firmware earlier than their existing bootloader, or in some way the flash was incomplete. Reflash with the latest version and consider the double flash method. That should sort you out.
[T-Mobile Samsung Galaxy S 4] lordcheeto03:
Has anyone else had problems using a headset for voice calls? I'm using a LifeProof case and it is virtually impossible to carry on a normal conversation without using a headset with that case. I can hear just fine, but the person on the other end of the call can't hear me unless I almost literally scream. The problem is that with the headset, it sounds like the person on the other end of the phone is using a speakerphone and standing on the other side of the room from the phone. If I take the headset out, I hear them perfectly loud. Music, videos, and every other type of media sounds normal, just voice calls are terrible. This is with the stock headset and an aftermarket headset, and it doesn't matter if I use the stock phone app, SipDroid, stock phone app with my pbxes information, or the cell network. Any ideas?
[T-Mobile Samsung Galaxy S 4] ShinySide:
Read this http://www.androidguys.com/2014/02/04/lifeproof-fre-galaxy-s4-review/
[T-Mobile Samsung Galaxy S 4] Frankenscript:
Can't believe I actually have to ask this but it's driving me nuts. When I take a picture in the standard Messaging app to send with a text, where is that picture stored? I'm not seeing such pics in Gallery. Nor in the dcim camera folder.

I'm on slimkat 8 if that matters but using its stock messaging app.
[T-Mobile Samsung Galaxy S 4] Skipjacks:
Download another gallery app like QuikPic.

It should scan the memory for all pictures. Once it finds those saved file it will display them.

From there just select one and look at the file details to see where its stored.
[T-Mobile Samsung Galaxy S 4] Frankenscript:
Fabulous idea, thanks. However, oddly quickpic didn't find them either! It is as though the pictures exist only embedded in the texts and not anywhere else! Is this normal behavior for the aosp stock messaging app?

I did try taking another picture in a new text and see the same behavior... No file to be found. Long pressing the image would allow it to be saved as the wallpaper...