Need some advice on i337 ATT S4 - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

Hi guys, I am having some issues with my Girlfriends S4 (i337 AT&T Version).
The issues I am having are below, but I want to know if you guys would recomend me upgrading it from 4.2.2 to some other ROM that may clear out these issues and what you would suggest me to upgrade it to?
I want something that is STABLE, fairly close to the stock S4 Build or even the Stock Android GUI and easy to upgrade too.
Or is the phone just screwed and I should look into replacing it? I have not upgraded the phone from 4.2.2 because as I understand it, doing that locks the bootloader and makes it a pain in the ass to root and upgrade.
Issues she has:
-When recording video, sometimes it wont record voice, sometimes it does. No idea why this is doing this.
-Sometimes video's refuse to play, then it starts working again.
-SD Card appears to disengage at times. Its Lexmar, maybe I need to get a Patriot like mine.
-The phone just intermittantly disengages from the Cell Network or Wi-Fi network. She sees it mostly when she uses Viber. It runs well, then it just up and loses its connection then starts working well again
-Has had a few issues where people dialing her just cant get to her, its as if the phone has been turned off, or she cant dial out on the network.
-In certain cases repowering it corrects the issues for a while so I tell her to repower the phone once or twice a week.
This is what her phone is running:
SAMSUNG-SGH-I337
4.2.2
I337UCUAMDB
JDQ39.I337UCUAMDB
If this is not the correct place to ask these questions, please direct me to a better place, but I have found this forum to be an amazing resource with knowledgable people and I am not sure where to go

Need more info... like:
1. Is the phone rooted?
2. Location the phone is used?
DID you try OTA update
Mithanx said:
Hi guys, I am having some issues with my Girlfriends S4 (i337 AT&T Version).
The issues I am having are below, but I want to know if you guys would recomend me upgrading it from 4.2.2 to some other ROM that may clear out these issues and what you would suggest me to upgrade it to?
I want something that is STABLE, fairly close to the stock S4 Build or even the Stock Android GUI and easy to upgrade too.
Or is the phone just screwed and I should look into replacing it? I have not upgraded the phone from 4.2.2 because as I understand it, doing that locks the bootloader and makes it a pain in the ass to root and upgrade.
Issues she has:
-When recording video, sometimes it wont record voice, sometimes it does. No idea why this is doing this.
-Sometimes video's refuse to play, then it starts working again.
-SD Card appears to disengage at times. Its Lexmar, maybe I need to get a Patriot like mine.
-The phone just intermittantly disengages from the Cell Network or Wi-Fi network. She sees it mostly when she uses Viber. It runs well, then it just up and loses its connection then starts working well again
-Has had a few issues where people dialing her just cant get to her, its as if the phone has been turned off, or she cant dial out on the network.
-In certain cases repowering it corrects the issues for a while so I tell her to repower the phone once or twice a week.
This is what her phone is running:
SAMSUNG-SGH-I337
4.2.2
I337UCUAMDB
JDQ39.I337UCUAMDB
If this is not the correct place to ask these questions, please direct me to a better place, but I have found this forum to be an amazing resource with knowledgable people and I am not sure where to go
Click to expand...
Click to collapse

First off don't let it do any updates, and if you are on MDL, it will be trying to.....get rooted real fast, and go from there....
Root the device
flash a recovery
then go rom hunting....
And for some reason you do not want to do all I have mentioned, do a factory reset and see if that fixes the issues.....if you factory reset, beware that it WILL wipe your internal sdcard...back it up first....
good luck!

Related

Samsung I9000M 2.2NL Help..

I hate to post a thread like this, but after searching and basically pulling my hair out, I've decided it was time.
Anyway, as title suggests I have an I9000m with the 2.2 UGJL2 *Typo in title, sorry!!*
Heres the problem with the phone...
Its a bell phone, unrooted or modified. Its running 2.2 JL2. When used with an bell SIM it will dial out and receive, receive texts, send them. However it won't receive picture messages, well it receives but just says downloading (and the plan does have it)
It also won't connect to the mobile network. If I manually set APN it does, but then its ability to call out is brutal for some reason. Also I threw my virgin mobile sim in it, set apn and it would go onto the internet no problem, but calling and text suffered big time.
It also seems to lag huge all the time, it'll freeze, you hit the center button and it just takes screen shots.
Its a refurb phone if that helps. Its actually my gfs phone, I picked her up a HTC incredible S... she says if we can fix the old one she kinda wants the samsung back.
Any help would be appreciated.
Mike
Have you tried a factory reset to see if that fixes the problems? That would be the best starting point.
Sent from a telephony device
radeon_x said:
Have you tried a factory reset to see if that fixes the problems? That would be the best starting point.
Click to expand...
Click to collapse
Been done twice. Also have had two new sim cards installed aswell. I figured before I tried rooting it would be best to consult you guys. Is it possible that there's a hardware issue?
Thanks
Mike
Based on your description it doesn't sound like a hardware issue, but no way to know for sure.
I think your next best bet would be to try reflashing JL2 (or KC1 even) using Odin; as long as you can get to download mode via the 3 button combo. If you're still having problems after that then probably it is hardware.
Sent from a telephony device
radeon_x said:
Based on your description it doesn't sound like a hardware issue, but no way to know for sure.
I think your next best bet would be to try reflashing JL2 (or KC1 even) using Odin; as long as you can get to download mode via the 3 button combo. If you're still having problems after that then probably it is hardware.
Click to expand...
Click to collapse
Got er fixed. After I put the phone down and enjoyed a beer for a bit, I went back and basically wiped the phone clean, I think I did it 3 times in a row, using both the 3 button download mode one, and two different ones than can be accessed via the dialer. After doing that I retryed the APN settings again and ALAS it finally worked correctly. Its now connecting to the HSDPA and is also downloading MMS messages like it should. Its also yet to lag again. I'm assuming it was an app that was causing that aswell.
Regardless, the misses is happy, I might keep the Incredible S (currently have the HTC legend, lovely phone, but it does feel under powered compared to the I9000 and the Incredible S)
Sometimes I think a guy has gotta step back and relax for a minute lol!!
Thanks again

How to check phone for problems?

Hi All,
I've just purchased another Nexus S (I had two already) but this time second hand. This one however is doing some odd things. I've used Nexus S's since it was released so have a feeling for them. It does thing like:
- Rings with incoming calls but stays on lock screen.
- Has incoming calls but doesn't ring
- Freezing on the home screen & not getting touch input
- General oddities
First thing I'd guess would be to think it was dropped or damaged in some way but it's spotless, just the usual scratches or scuffs you'd expect on a 2nd hand phone. Box & everything look genuine, compared it with the other phones and it look all fine. I've done a reset of the software back to default (using in Phone reset) but still doing odd things.
Does anyone have any idea what I can do to find out what is going on here, is there some sort of system self check I can run to check for internal damage? Fuller system reset I can do? Etc.
Any advice?
Phone details:
Android Version: 4.1.1
Baseband Ver: I9020XXKI1
Build num: JRO03E
Kernel Version: 3.0.31-g3b0c5d2
Cheers,
Mark
Was meant to post this in the Q&A thread I think, sorry about this. Could one of the moderators please move it for me.
Thanks,
Mark
GPS
Root (I prefer to root myself)
WiFi
Clean ESN
Sent from my Nexus S 4G using xda app-developers app
I would suggest a full reset using the stock images from Google. Or root and flash a custom ROM.
Sent from my Nexus S
[email protected] said:
GPS
Root (I prefer to root myself)
WiFi
Clean ESN
Click to expand...
Click to collapse
GPS? Not sure what you mean, it's active some times, but don't use geo-location features on the phone often.
Root: No, stock updated OTA
Wifi: connected all the time to the same router as my other S's
Clean ESN: I assume so, didn't check, but I'm able to make and receive calls 85% of the time without any issues and very infrequent drops. It doesn't seem to be a network problem more the phone acting up in funny ways.
Cheers,
Mark.
7TimesCursed said:
I would suggest a full reset using the stock images from Google. Or root and flash a custom ROM.
Click to expand...
Click to collapse
I'd actually prefer to keep this one stock as its being used for work. I've rooted one of my S's, but this new one is being used as a main phone so have not rooted.
I've never flashed back a stock image, can this be done without root? If so, would you be kind enough to point me in the right direction of a walk-through so I can give it a go?
Cheers,
Mark.

Cannot update PRL or Profile Error codes

So for a while now I have not been able to update my PRL or Profile. It hasn't bothered me because for the most part the phone has worked fine until recently. A friend texted me and said he was going to call me. He text back a few minutes later and ask why I didnt answer. Phone was next to me the whole time and it didnt ring or so any kind of notification that he had tried to call. Took him 3 calls before my phone rang and he got through.
I have applied for a few jobs within the past few weeks and have heard nothing from anyone which I am surprised because I was referred to one company by and friend who put in a good word for me and said that his supervisors were really impressed with my resume. So now I feel like this issue could possibly be costing me job opportunities and I want to get it figured out.
The errors are 6602 and 407. I've tried to do it over 4G and put my phone just in CDMA mode for 3G only and get the 407 code for 3G and the 6602 over 4G.
I am running Stock rooted/odexed MK2 and I just did a clean flash of the rom again clearing data/cache and dalvik seeing if that would help which it didn't. I have reflashed the modem seperately also with no help.
I have seen many threads of others having this issue but no answers on a fix. Has anyone experienced this and actually done something that has resolved the issue?
If you feel it may be costing you a job, why not flash a nand of a stock rom, assuming you have one
Sent from my SPH-L720 using XDA Free mobile app
I did, I flashed back to MF9 using this http://www.rwilco12.com/Files/Devic...H-L720)/Stock ROMs/MF9/Full Restore/Unrooted/
Which should be a stock factory restore, still would not update profile or prl. From there I updated to NG2 with Samsung Kies and I am still not able to update either.
tenaciousj said:
I did, I flashed back to MF9 using this http://www.rwilco12.com/Files/Devic...H-L720)/Stock ROMs/MF9/Full Restore/Unrooted/
Which should be a stock factory restore, still would not update profile or prl. From there I updated to NG2 with Samsung Kies and I am still not able to update either.
Click to expand...
Click to collapse
What kernel do you use?
(I fixed this issue I my phone, but SERIOUSLY, what seemed to fix it MADE NO SENSE, so I'm not going to to relate it again, you can look up my posts if you want, but I wouldn't waste your time. I'm more interested in what kernel you are using... if it isn't KT-SGS4, then it doesn't matter.)
Other than that, have you tried the ##72786# dialer code, which is supposed to reset that stuff (didn't fix it for me personally)? You may have to reactivate your phone though (I did), which isn't that much of an issue...
rsngfrce said:
What kernel do you use?
(I fixed this issue I my phone, but SERIOUSLY, what seemed to fix it MADE NO SENSE, so I'm not going to to relate it again, you can look up my posts if you want, but I wouldn't waste your time. I'm more interested in what kernel you are using... if it isn't KT-SGS4, then it doesn't matter.)
Other than that, have you tried the ##72786# dialer code, which is supposed to reset that stuff (didn't fix it for me personally)? You may have to reactivate your phone though (I did), which isn't that much of an issue...
Click to expand...
Click to collapse
For kernel version it shows 3.4.0-2162929 which I'm guessing is the stock NG2. I haven't flashed anything else since updating through Kies to NG2.
I've done the 72786 dial code a handful of times and it still didn't help. The only thing that solved was a issue I had after I first updatd to NG2 I had no working 4G. Phone would only connect to 3G and that was when it was in CDMA only mode. Aside from that it hasn't helped with the PRL/Profile update issue I'm having.
tenaciousj said:
For kernel version it shows 3.4.0-2162929 which I'm guessing is the stock NG2. I haven't flashed anything else since updating through Kies to NG2.
I've done the 72786 dial code a handful of times and it still didn't help. The only thing that solved was a issue I had after I first updatd to NG2 I had no working 4G. Phone would only connect to 3G and that was when it was in CDMA only mode. Aside from that it hasn't helped with the PRL/Profile update issue I'm having.
Click to expand...
Click to collapse
Yeah, that does sound like a stock kernel to me. Have you tried updating it through the Sprint Zone app? In Settings, More Networks, Mobile Networks, Network Mode, if it is not set to Automatic, you can try setting it to that and see if it lets you update after reboot, I have heard that can help but did not fix it for me (I have it set to LTE/CDMA). Have you seen this thread: Galaxy S4/Note 3/Mega - Update Profile/PRL/HFA Fix for Sprint/Boost/Virgin Mobile/etc? It is complex (don't IGNORE steps 5, 6, 7 and 8, which most people in the thread seem to...). I have not personally used this method, I was planning to before my issue resolved itself, but I didn't have a donor GS4 either (damn it, I JUST remembered that I DO, I f*ed up the USB port on my first one and completely forgot about that! BLOW MY MIND! But anyways...).
rsngfrce said:
Yeah, that does sound like a stock kernel to me. Have you tried updating it through the Sprint Zone app? In Settings, More Networks, Mobile Networks, Network Mode, if it is not set to Automatic, you can try setting it to that and see if it lets you update after reboot, I have heard that can help but did not fix it for me (I have it set to LTE/CDMA). Have you seen this thread: Galaxy S4/Note 3/Mega - Update Profile/PRL/HFA Fix for Sprint/Boost/Virgin Mobile/etc? It is complex (don't IGNORE steps 5, 6, 7 and 8, which most people in the thread seem to...). I have not personally used this method, I was planning to before my issue resolved itself, but I didn't have a donor GS4 either (damn it, I JUST remembered that I DO, I f*ed up the USB port on my first one and completely forgot about that! BLOW MY MIND! But anyways...).
Click to expand...
Click to collapse
Thanks for the link I'll check it later. My account is actually a SERO account but I did have working updates when I first got the phone. The phone was also new and activated on the account as soon as I got it.
Sent from my SPH-L720 using Tapatalk
tenaciousj said:
Thanks for the link I'll check it later. My account is actually a SERO account but I did have working updates when I first got the phone. The phone was also new and activated on the account as soon as I got it.
Sent from my SPH-L720 using Tapatalk
Click to expand...
Click to collapse
Yeah, I honestly don't really understand what that thread means when it talks about flashing to legacy accounts. I believe I have a SERO account (I don't know, my wife pays the bill... :silly: ) and the updates worked fine until I think messing with the APNs to try to fix my inability to send MMS messages messed things up. I never flashed any legacy accounts or anything.
So... at this point, even though IT MAKES NO SENSE, I will tell you what SEEMED to fix the issue for me. I STRESS, this MAKES NO SENSE TO ME, but after months of being unable to update my PRL/PROFILE, after doing the following, I was suddenly able to update them. It is likely an EXTREME coincidence, but for the hell of it I will now tell you.
Using the Pro version of Solid Explorer, I copied the Carrier folder from the root of my phone to my external SD card. THAT IS IT. YES... THAT IS IT. NOTHING MORE. I did NOT copy it back, I did not change anything. HOW this could possibly have cured the problem would seem to make very little sense, I can only conjecture that Solid Explorer, in the act of copying the folder to my external SD card, somehow 'refreshed' something in the carrier folder in the root of my phone... and I am grasping at straws here. I think you can probably understand WHY I did not want to reveal that this is what SEEMED to cure my issue, because it is so unlikely, and more likely an extreme coincidence and something else happened that I am not aware of, but that is the only thing I know of that I did related between when it was not working to when it was. So now you know at least (and as I have told a few others, there is no point in not trying, other than the crushing disappointment of it almost certainly not working)...
I should add as well however, now that it occurs to me, that I use the KT-SGS4 KitKat 4.4 TouchWiz kernel, and had for a long time suffered from a loss of mobile connection and GPS. requiring a reboot to get them back (within a similar time period to my PRL/PROFILE issues). I seem to have fixed the mobile connection/GPS loss by choosing the 'correct' governor to use with that kernel for my ROM, and it is not IMPOSSIBLE that THIS occurred at the time I was able to update my PRL/PROFILE, but I do not remember exactly, and I'm PRETTY CERTAIN I still had the issue with the mobile connection/GPS loss after updating my PRL/PROFILE, so I think that likely rules out KT-SGS4 as a culprit in this issue. (But then, I was forgetting that we already established that you were on a stock kernel...)
KNOWN issues with KT-SGS4 Sprint KitKat 4.4 TouchWiz kernel
rsngfrce said:
Yeah, I honestly don't really understand what that thread means when it talks about flashing to legacy accounts. I believe I have a SERO account (I don't know, my wife pays the bill... :silly: ) and the updates worked fine until I think messing with the APNs to try to fix my inability to send MMS messages messed things up. I never flashed any legacy accounts or anything.
So... at this point, even though IT MAKES NO SENSE, I will tell you what SEEMED to fix the issue for me. I STRESS, this MAKES NO SENSE TO ME, but after months of being unable to update my PRL/PROFILE, after doing the following, I was suddenly able to update them. It is likely an EXTREME coincidence, but for the hell of it I will now tell you.
Using the Pro version of Solid Explorer, I copied the Carrier folder from the root of my phone to my external SD card. THAT IS IT. YES... THAT IS IT. NOTHING MORE. I did NOT copy it back, I did not change anything. HOW this could possibly have cured the problem would seem to make very little sense, I can only conjecture that Solid Explorer, in the act of copying the folder to my external SD card, somehow 'refreshed' something in the carrier folder in the root of my phone... and I am grasping at straws here. I think you can probably understand WHY I did not want to reveal that this is what SEEMED to cure my issue, because it is so unlikely, and more likely an extreme coincidence and something else happened that I am not aware of, but that is the only thing I know of that I did related between when it was not working to when it was. So now you know at least (and as I have told a few others, there is no point in not trying, other than the crushing disappointment of it almost certainly not working)...
I should add as well however, now that it occurs to me, that I use the KT-SGS4 KitKat 4.4 TouchWiz kernel, and had for a long time suffered from a loss of mobile connection and GPS. requiring a reboot to get them back (within a similar time period to my PRL/PROFILE issues). I seem to have fixed the mobile connection/GPS loss by choosing the 'correct' governor to use with that kernel for my ROM, and it is not IMPOSSIBLE that THIS occurred at the time I was able to update my PRL/PROFILE, but I do not remember exactly, and I'm PRETTY CERTAIN I still had the issue with the mobile connection/GPS loss after updating my PRL/PROFILE, so I think that likely rules out KT-SGS4 as a culprit in this issue. (But then, I was forgetting that we already established that you were on a stock kernel...)
KNOWN issues with KT-SGS4 Sprint KitKat 4.4 TouchWiz kernel
Click to expand...
Click to collapse
Yeah that copying the carrier folder don't seem like it would do anything but maybe I'll give it a try. Whats the best way to root right now? I just want to make sure it will let me unroot the phone if it dont work and no trip knox incase I have to bring this in.
Do you know what bootloader you are on? You said you were on Sys MK2, then went back to MF9 and now are on NG2. When you went to NG2, unless you took very specific steps to keep the MF9 bootloader, you would be on the NG2 bootloader now, which includes Knox, and you can no longer go back beyond NAE I think. If you don't know what bootloader you have, get DeviceInfo https://play.google.com/store/apps/details?id=com.jphilli85.deviceinfo from the Play Store and under the Software heading, see what it shows for the last 3 digits for Bootloader. This makes a difference on the best root method.
rsngfrce said:
Do you know what bootloader you are on? You said you were on Sys MK2, then went back to MF9 and now are on NG2. When you went to NG2, unless you took very specific steps to keep the MF9 bootloader, you would be on the NG2 bootloader now, which includes Knox, and you can no longer go back beyond NAE I think. If you don't know what bootloader you have, get DeviceInfo https://play.google.com/store/apps/details?id=com.jphilli85.deviceinfo from the Play Store and under the Software heading, see what it shows for the last 3 digits for Bootloader. This makes a difference on the best root method.
Click to expand...
Click to collapse
Bootloader and software version both show up as NG2 on Device Info.
tenaciousj said:
Yeah that copying the carrier folder don't seem like it would do anything but maybe I'll give it a try. Whats the best way to root right now? I just want to make sure it will let me unroot the phone if it dont work and no trip knox incase I have to bring this in.
Click to expand...
Click to collapse
I'm not an EXPERT on this subject, but if you are on NG2 stock unrooted right now, I believe you can use: CF-Auto-Root to root it. Or, here is a stock rooted version of the NG2 ROM:
[ROM][NG2] Stock Rooted NG2 (which mentions that it has Knox removed).
As far as tripping stuff, I'm somewhat unsure about that to be honest. I have always used Triangle Away on my phone, but it has a warning now not to use it with a custom kernel (which I use). My counter is at 3, but I am out of warranty anyway.
I spent a few hours on chat with Sprint. They couldn't figure it out so I'm bringing it in tomorrow. Guessing I'll get a new phone. The people at the Sprint store seem rather limited in their knowledge, at least they were last time I was there.
Sent from my SPH-L720 using Tapatalk
tenaciousj said:
I spent a few hours on chat with Sprint. They couldn't figure it out so I'm bringing it in tomorrow. Guessing I'll get a new phone. The people at the Sprint store seem rather limited in their knowledge, at least they were last time I was there.
Sent from my SPH-L720 using Tapatalk
Click to expand...
Click to collapse
I guess if there are no signs that it has been rooted, that's probably a good way to go. You apparently had a phone pre-Knox and now I think you will get one with a Knox system, but it doesn't matter in your case since went beyond the point of no return already with the bootloader... I don't know if you have the new Spark model (tri-band), I don't know if the still make the old plain one like I have anymore...
rsngfrce said:
I guess if there are no signs that it has been rooted, that's probably a good way to go. You apparently had a phone pre-Knox and now I think you will get one with a Knox system, but it doesn't matter in your case since went beyond the point of no return already with the bootloader... I don't know if you have the new Spark model (tri-band), I don't know if the still make the old plain one like I have anymore...
Click to expand...
Click to collapse
I got the phone I have now about a month after the GS4 came out so its non sparks. I stayed on MK2 for so long because I couldn't find a newer rom that looked to be stable and not have to jump through a bunch of hoops to install it. The Odin screen shows everything being zero and offical software so I should be good. I am going to sign out of all of my accounts before I bring it in being I have a lot of apps bought through the store that only work on rooted phones. I hope I can get a tri band to replace it. My friend has a triband GS4 and it gets much better data speeds than mine.
Yeah, I mentioned elsewhere here before that I actually didn't know of the existence of the "Sparks" version of the G4. I screwed up the USB port on my G4 before upgrade time, so I had to buy another G4 on Amazon. Upgrade time has come up, so I was just looking and saw my phone listed as "Non-Sprint Sparks", which I thought meant that they called it the "Sparks" model because I hadn't bought it from Sprint... took me a while to figure out what that actually meant... :laugh:
Sprint online nor the store could fix it so I got a new one.
No rooting but error 407
As titled, I've not rooted the phone. I'm getting error code 407 on attempts to update PRL and Update profile. Download updates manually does nothing. Note I'm on a Samsung Note 4, Sprint. Had updated to Marshmallow 6.0.1 late March but then above actions persist since then. I'm using Wi-Fi only, Sprint service disconnected as I couldn't pay bill when I lost job during a disabling illness.
I haven't been able to update prl profile or firmware for over 8 months. I am not rooted never have been I have called customer service over and over replaced SIM card did the ## stuff nothing has helped. The phone works although service isn't as good as it could be and says there is a prl update available but I always get connection error 6 on all 3. I also have serious battery draining issues as far as my data I do get a strong 4g lte connection just service is low and sometimes drops when I am close to a sprint tower every other phone gets full bars really on any network especially sprint. I hope someone can help I like my sph-720 other that that and honestly I can't afford to keep up with the Joneses. Hopefully this is enough info please help
00Lee said:
I haven't been able to update prl profile or firmware for over 8 months. I am not rooted never have been I have called customer service over and over replaced SIM card did the ## stuff nothing has helped. The phone works although service isn't as good as it could be and says there is a prl update available but I always get connection error 6 on all 3. I also have serious battery draining issues as far as my data I do get a strong 4g lte connection just service is low and sometimes drops when I am close to a sprint tower every other phone gets full bars really on any network especially sprint. I hope someone can help I like my sph-720 other that that and honestly I can't afford to keep up with the Joneses. Hopefully this is enough info please help
Click to expand...
Click to collapse
Have you done a factory reset via recovery? Or you might want to flash latest full stock

Recurrent lag after 7.0 update, two different phones

Hello folks, new to the forum here. My wife and I both recently got Galaxy S7s from Sams, and our carrier is AT&T. For whatever reason, the push updates never happen on my phone, so I am still in 6.0.1, but my wife's has gotten 7.0 pushed to hers. Problem is that after a while (perhaps a couple of days), her phone starts to develop a persistent lag, where she can't really do anything at all, like typing or changing apps, so severe is the lag. The phone was basically useless at that point, so she would have to restart the phone to restore its normal function. But the lag would always return, and she would need restart multiple times per day.
Talking to Samsung and AT&T proved fruitless at getting any troubleshooting done other than factory resetting the phone. That of course fixed the problem, but as soon as the 7.0 push update happened, the lag came back. We eventually got AT&T to send us a new phone on warranty. But just recently her phone got 7.0 pushed and sure enough the lag is back. Clearly the problem is software related, as my phone is still 6.0.1 and runs perfectly.
I am pretty uninitiated in the Android world, and so I was hoping you folks might be able to help us restore her phone, as I am certain we will get no useful help through the "official" channels. We aren't looking to root or anything, but if there is troubleshooting or a guide we could walk through, we would sure appreciate the help.
Thanks!
I had the same problem when my S7 did the update from 6.0.1 to Android 7. I asked AT&T to change the phone and they did. When the new phone did the update the lag problems started again. I downgrade to stock 6.0.1 and disable the update service with Package Disabler. Now I keep on android 6.0.1 (which I like more than the Nougat) and I do not have lag problems.
You could try to flash the Nougat update manually. It's not exactly simple, but a fair amount of reading up on it should prepare you. Obviously you'll lose all personal data, and there's even a chance it might still be laggy for you. There is a guide on how to do this on droidviews.com that helped me tremendously. Make sure that if you try this, you plug in the phone only after it is in download mode and only after Odin is open. Plus you'll need the drivers and to make sure the phone is in USB Debugging mode via developer options, as well as turn on OEM unlock before you try this. Good luck!

LTE fix? Stops working after a few minutes - need to reset phone

Hello - my issue is this:
Data/LTE fix? Stops working after a few minutes - need to reset phone
N910F - tried stock, and various roms - same issue (actually i think on stock it worked best but im unsure now)
cant find a fix anywhere - any good souls out there who know what to do?
your time is much appreciated.
Does only the LTE connection stop working (so it goes down to H+ for example) or your mobile data connection in general?
Vygravlil said:
Does only the LTE connection stop working (so it goes down to H+ for example) or your mobile data connection in general?
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Good Question.
No it's still up and the connection shows that only "upload" up arrow is lighting up, but the down arrow stops lighting up.
It may sound super stupid, but can you access the internet or do any other internet related applications work? I assume it doesn't, otherwise you wouldn't have started this thread, but I just want to ensure.
Because at the moment, it sounds like a bug with the "connection display" to me.
Vygravlil said:
It may sound super stupid, but can you access the internet or do any other internet related applications work? I assume it doesn't, otherwise you wouldn't have started this thread, but I just want to ensure.
Because at the moment, it sounds like a bug with the "connection display" to me.
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I WISH it was just that
unfortunately, all internet applications stop working - i contacted the telephone company and they agreed to reset the connection and that I should turn off and turn on my phone in about 15 minutes - see how it is then. Will post my findings later - there are many threads on this topic on google - but I felt better posting here on XDA. Appreciate the help in diagnosing.
You're welcome!
Just post your results later if possible.
Did you modify your device before the problem accured? Maybe it's the fault of root or a custom ROM you are using?
still nothing - going to use stock rom and test the findings. I dont want to sell the phone but I feel I have to now...
According to your last post, I assume you're using a custom ROM? If yes, got back to stock ROM and test it again, just as you said. I guess your custom ROM (if you're using one) is the problem.
not fixed - going to take to a service shop
Hmm, that's a huge mess. Do you still have warranty? (Although I guess it's voided by playing around with custom ROMs...)
And do things like normal calls work?

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