Domestic Unlocked L720 Help - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

So i have fully domestic unlocked l720 however i have a problem where if i turn on wifi my service bars stay on but i can not recieve or call other people its as if i have no service. Also it likes to drop randomly. Its over just unstable wether i use stock rom or http://forum.xda-developers.com/galaxy-s4-sprint/general/od2-domestic-unlock-t3116542 custom ROM. I find it is slightly more stable on OD2 then it is on kit kat so i decided to stay on that for now. I've tried custom roms to see if it produce more stability but utimatly it cause more problem as in not getting service at all. Or getting service but no wifi. I've tried the unicorn rom and wicked mod. Has anyone found a way to get a stable connection on the l720 on ATT? Atm i just tried to install some other roms but it didn't work out well for what ever reason. My best bet been stock firmware. When i get service and everything to work on a custom rom it says this when i call "sorry you phone has no been ativate"blah blah blah. This is easily fixed if i could get APN settings to work on custom roms but it seems it just likes to **** up. I was told by FAQ on wicked that the modem works properly on it. however it dosen't exactly. Atleast for ATT of course. I'm partly a newbie to this type of stuff but i understand the gist and i consider my self pretty tech savvy so if you a complex solution to this please enlighten me <3

bump?

Related

S5 Rom Port APN Fix Needed

I HAVE FOUND TWO ROMS THAT ARE COMPLETELY FLASHABLE ON THE VERIZON GALAXY NOTE 3...FINALLY!!
NOTE: IN ORDER TO FLASH THESE ROMS YOU NEED TO HAVE A ROOTED VERIZON GALAXY NOTE 3 RUNNING THE NC2 OR NC4 FIRMWARE/BOOTLOADER AND SAFESTRAP VERSION 3.72
ALL FEATURES CURRENTLY WORKING (EXCEPT DATA)
NEED EXPERTISE:ALTHOUGH ALL FEATURES ARE CURRENTLY WORKING I CANNOT SEEM TO GET THE APN WORKING CORRECTLY I BEG OF YOU PLEASE FLASH BOTH ROMS THEY ARE VERY FUN TO PLAY AND AND TRY TO GET THE VERIZON NETWORK WORKING.... I CAN SEND/RECEIVE PHONE CALLS AND RECEIVE TEXTS HOWEVER I CANNOT SEND TEXTS/MMS AND GET THE DATA TO WORK..PLEASE NEED YOUR HELP
THESE ARE THE LINKS TO THE ROM THREADS AND YES I KNOW THEY ARE NOT IN THE VERIZON NOTE 3 THREAD THEY WORK COMPLETELY....
http://forum.xda-developers.com/showthread.php?t=2737234/U]
http://forum.xda-developers.com/showthread.php?t=2737257/U]​
SIDE NOTES: THE PHONE RECOGNIZES ITS ON VERIZON AND DISPLAYS VERIZON AS A CARRIER...MY PHONE NUMBER SHOWS UP IN THE SETTINGS/PHONE INFO....I CAN RECEIVE SMS FINE WITHOUT CHANGING ANY APN SETTINGS...ANYONES INPUT IS NEEDED
Actually there is one more ROM that i was able to successfully flash, but it has some issues like the wifi wont scan any networks, which is a huge downside for me....so for now ima stick with the stock room. And if anyone wants to try it out and tell us if it works or not for them the ROM is here:http://forum.xda-developers.com/showthread.php?t=2752687
Any Luck?
Have you got data working yet? Might download it and play around with features.
Here are guides to porting roms ima noob so i cant really help
http://forum.xda-developers.com/showthread.php?t=2069850
http://forum.xda-developers.com/showthread.php?t=1908008

[Q] Data Drops During Calls. Please Help.

Hello guys. I have the n900t, I am now running tweaked s5 base n4 style v6.0. And I run alot of n9005 ROMS as well. With that said here is my issue. For only the past few weeks ( month tops) every time i make or recieve a phone call my data drips down to hspa. The second i hit call and right before my phone rings is when it happens. After my call the data takes a very long time to jump back up. This is a new issue and i have no idea what it is. However, i did flash back to a stock ROM and the issue was solved. And i forget which rom it was but it was soley TE based and there were no issues. I did try to flash a modem but it didnt take. Is anyone else experiencing this problem? Or can anyone suggest a fix for it.
Thank you for your help.
bump.
Still having the issue. I tried to flash a new modem and it just failed anyway. Dont know if I should try a radio. I just cant fivure out why this happened out of no where. I was fine no matter what ROM I was running. Now...this crap. Please guys, 40 people saw this, can SOMEBODY please help.
mattdiehl83 said:
Still having the issue. I tried to flash a new modem and it just failed anyway. Dont know if I should try a radio. I just cant fivure out why this happened out of no where. I was fine no matter what ROM I was running. Now...this crap. Please guys, 40 people saw this, can SOMEBODY please help.
Click to expand...
Click to collapse
1) Quite strange - your picture suggests you are on Verizon yet you comment about a N900T in the forum for the INTERNATIONAL Note 3. On what network are you? Are you aware that there might be network-specific factors involved which could only be visible for other users on exactly the same network in exactly the same region?
2) Try stock ROM (with corresponding stock modem) from a location with very good signal.
5 he physical device is an n900t, however, I am running as of now, the hyper drive note 5 port with n4 UI. When I do flash back to a full stock TW ROM all is good, A FEW TW based ROMs seem to be OK. Like this one, the calls do not affect the data signal. But most ROMs do effect it in that way. You said that it shows I'm running Verizon?
But I am very curious why all of the sudden I am having this issue. I have never had it before. Except with a few specific AOSP based ROMs. I just can't figure out what it is that's causing it. I have done vigorous wipes of the phone to no avail.
And I am in Philadelphia so there really is no place that is actually bad reception (except in the susubways of course...lol)
And thank you for your reply.
mattdiehl83 said:
5 he physical device is an n900t, however, I am running as of now, the hyper drive note 5 port with n4 UI. When I do flash back to a full stock TW ROM all is good, A FEW TW based ROMs seem to be OK. Like this one, the calls do not affect the data signal. But most ROMs do effect it in that way. You said that it shows I'm running Verizon?
But I am very curious why all of the sudden I am having this issue. I have never had it before. Except with a few specific AOSP based ROMs. I just can't figure out what it is that's causing it. I have done vigorous wipes of the phone to no avail.
And I am in Philadelphia so there really is no place that is actually bad reception (except in the susubways of course...lol)
And thank you for your reply.
Click to expand...
Click to collapse
1) Your avatar mentions Verizon for some reason.
2) If it is all OK with the stock ROM then it is a problem with the custom ROM, ask in the specific thread for that specific ROM. Most likely it has something to do with the modem and the corresponding RIL.
So when ever a new ROM is flashed the modem is flashed as well. Unless the dev says otherwise?

S4 i9505 Orange need to flash US AT&T rom

Hello!
I bought my mom an inexpensive S4 and it came with Orange wireless service provider and it's in French out for the box.
It's having some problem suck as MMS issues and all that, not to mention it's just being a pain in the butt to work with.
I want to flash the stock AT&T ROM to it ASAP so she will stop yelling at me about it, but I can't seem to find a copy around here. Maybe I'm just looking in the wrong areas, but I would appreciate some help locating it, thanks!
Also, it's been a while since I have done any ROM changes, so maybe showing me how they do it now would be helpful as well, thanks.
-Dave M.
AT&T ROMs cannot be installed on your phone. Odin will reject it at best, and you could hard brick the S4.
Unlock the phone by using the service menu exploit, RegionLock Away, or by purchasing an unlock code. Once the S4 is unlocked, you can install an unbranded firmware in place of the Orange-branded firmware. Keep in mind that this phone will never get LTE in the states as the frequencies are different.
Yes, I was made aware of the no 4G, no LTE issue with using a European phone by the guy who didn't know what he was doing when he programmed in the wrong APN settings at the AT&T corporate store...
Supposedly, the company I bought it off said this phone was unlocked already, so what then? It's been about 2 years since I did anything with ROMs, so I might be a little out of the know about the new stuff, thanks.
If it's already unlocked, then you can install any I9505 stock ROM you want. Download this ROM from Sammobile and follow the instructions on that page to install it. It's UK firmware so at the language prompt it will default to English. Be aware that you may have to flash the ROM twice before the S4's wireless radios function properly.
If everything goes as expected the APN should be automatically set. If not there are tutorials all over the place on adding an APN.
EDIT: Download the drivers from Samsung's website if not included in the Odin download on Sammobile. You'll need to have them installed for Odin to function.
Thanks. Now, how can I check to make sure this one is unlocked? Service mode is weird, because I had to do the Q followed by 0000 in key input to get it to give me the menu...
Put your Mom's AT&T SIM into the phone. If it asks for an unlock code then the S4 is still carrier locked.
Oh, okay. It's been working for like 2 months like this, lol.
Aren't there still a few carriers that aren't blocked for other regions? I just want to be sure, absolutely. I just want to know if there's another way to check.
Since it was Orange by origin (and those guys tend to lock stuff) I would say you would NOT be able to run AT&T on it as well (Orange ONLY lock - not really region lock)
When you say AT&T works I would assume previous owner already did what was needed and unlocked this device.
Sounds solid, thanks a bunch, fellas.
I just really wish there were a touchwiz ROM from AT&T for this particular model...
No, no you don't. If anything, you have it far easier by not having AT&T firmware. Unless of course you happen to LIKE encrypted (i.e. locked) bootloaders. AT&T and Verizon lock their bootloaders, which makes the simple things like rooting, bloatware removal, and custom ROMs far more difficult, and in some cases bordering on the impossible.
Your Mom may not give a damn, but by not having to deal with the headache of a locked bootloader you've made your life easier.
I've dealt with several so-called finished custom roms, such as the likes of such as Cyanogenmod and others, and lets just say they aren't quite as solid as the stuff that the phone comes with.
There's always something that doesn't work like it's supposed to or some important app that won't work somehow. Last time, I went with a stock rom, custom recovery (I like TWRP) and rooted the device and it ran just like I wanted. SO yeah, I'd like to use a stock touchwiz rom for the US if it's available somewhere.
I understand not wanting to toss a custom ROM on the phone, but that wasn't the point of my post. The ROM I prompted you to download several posts upthread is a stock Touchwiz ROM. In fact, up until this morning it was the same ROM I was using on my O2 I9505 that I'm using here in the US. As the I9505 is not available and never will be available from a carrier in the United States, there will never be a US ROM available for this phone. The ROM I had you download, unlike the AT&T ROM, has no carrier branding of any kind, no carrier bloatware, and no locked bootloader. As a result, you don't have the carrier meddling around with the ROM and making the experience worse by having crud added.
My point is, bluntly, that you're far better off now than you would be with an AT&T device. So, hopefully, now that you got everything sorted out your Mom can enjoy the phone.

Help No Service

Hello everyone,
I'm getting no service on my Sprint Galaxy S4 SPH-L720.
I've tried Slimkat 4.4.2, 5.0.1 and Google Play 5.0.1. I get service at times but it keeps cutting out for no reason. I am on baseband L720VPUFNAE, and PRL version 55020. I'm using an app called Roam Control which keeps the phone on roaming mode but it won't stay connected either. Even when set to force roaming it trys to connect to Sprint service. Perviously it would stay connected to Verizon.
Also on Slimkat 5.0.1 when enabling Roam Control it says "please make sure device is rooted" I know it is, because roam control doesn't give me that error on Slimkat 4.4.2 or Google Play Edition 5.0.1
I started having these issues about a week ago, before that everything was working fine. I was on Google Play Edition for a week, and then I started having these issues and went back to slimkat which worked flawlessly.
So to summarize this, phone will not stay connected to roaming no matter what I do. It wants to go back to Sprint, I've tried calling the ##872283# number or whatever it is. That didn't work, it told me it was unavailable and to try again.
Also, one time my cat knocked my phone off the table and it said no sim card inserted so I rebooted my phone and have been having issues since that day.
Did you check to make sure the SIM card didn't get jarred loose when it fell. If that's not it do you have a backup of your stock Rom you could restore? I have had connection problems before and going back to stock TW Rom restored it.
Hi, thanks for replying
I removed the sim card and put it back in, but that isn't fixing it.
I'm on GPE 5.0.1 latest update. Sometimes Roam Control works, and my phone will stay on roaming network, and sometimes it won't. Whenever I go to switch between Home and Roaming it doesn't want to go back to roaming. I have no idea what's going on.
Hi again,
So this is what i've noticed so far.
Slimkat 4.4.4 = Confirmed working, phone goes in and out of roaming back to Sprint network just fine. All data/mms works perfectly.
Slimkat 4.4.2 = Confirmed working, phone goes in and out of roaming back to Sprint network just fine. All data/mms works perfectly.
GooglePlayEdition 5.0.1 = Phone has intermediate service
Sacs Custom Rom v4 = Phone has no wifi, but the Roam Control works.
Slimkat 5.0.1 (Beta/Alpha) = Phone tells me it isn't rooted.
So the good news is, i've got the phone to be atleast usable now. But I want to know why these other roms are giving me problems, is it the baseband/modem I am using? Which one's am I supposed to be using for these roms?
From what I've read here on xda you have to be on the latest firmware, NG2 to have any success getting lollipop working smoothly. So I would look up how to use Odin to upgrade that. All the rooms that I've flashed recently have mentioned in the op to be sure you're on the latest firmware so it may also help with the other KK rooms.
I'm on Baseband version L720VPUFNAE isn't that the latest one?
No NAE is more than a year old NG2 was released last summer.
Hi,
I went ahead and updated to NG2 baseband using this file http://www.androidfilehost.com/?fid=23622183712458249 and Odin. (I am stating this to help people who might be Googling). It updated my Modem from the NAE one to the NG2 baseband, I am still on Slimkat 4.4.4. I will try flashing Google Play Edition 5.0.1 and see what happens.
Thank you guys for the assistance!
Does everything work the way it should on SK 444? If so make a backup so you have a solid place to revert to if you need it in the future. Also be sure to get a good GPS lock before flashing to a 5.0 Rom.
Yes everything works in Slimkat 4.4.4. The phone goes in and out of roaming without any hiccups. Also what do you mean by make sure you get a good GPS lock?
Furthermore, I have went back to Google Play Edition 5.0.1 and I am still experiencing the issue where my phone does not want to go back to roaming after being on the Sprint network. I will be out of service and the phone will just say "searching for service" even though I have Roam Control set too "Roam Only Mode". In order to get my phone to get service back I have to go into Cellular network settings and select System select and put my phone on Home only and then go back to Automatic to make the phone connect to the roaming network.
This is becoming a real nightmare.
The GPS not working was a common problem with GPS 5.x and having a good lock on your position in a stick TW Rom before flashing to GPE is supposed to fix it. So my comment was merely a preventive one. I have no idea for you on the roaming problem in GPE.
---------- Post added at 02:58 PM ---------- Previous post was at 02:52 PM ----------
Have you tried updating the profile and prl while in SK 444? Then flash into GPE, that's one thing I would try if you haven't done so.
Wonk258 said:
The GPS not working was a common problem with GPS 5.x and having a good lock on your position in a stick TW Rom before flashing to GPE is supposed to fix it. So my comment was merely a preventive one. I have no idea for you on the roaming problem in GPE.
---------- Post added at 02:58 PM ---------- Previous post was at 02:52 PM ----------
Have you tried updating the profile and prl while in SK 444? Then flash into GPE, that's one thing I would try if you haven't done so.
Click to expand...
Click to collapse
How would I go about updating the profile and PRL while in SK 444? It's based off of Cyanogenmod kernal, as is GPE.
trenth said:
How would I go about updating the profile and PRL while in SK 444? It's based off of Cyanogenmod kernal, as is GPE.
Click to expand...
Click to collapse
You must be on a stock touchwiz rom in order to update your data profile or prl.
Sent from my GT-I9505G using Tapatalk
My bad, I meant have you tried updating the prl and profile while in a stock TW rom? My apology for the confusion.
Here's another thought, perhaps try one of the other non GPE 5.x Roms to see if your troubles are limited to the one GPE Rom or if it's a lollipop issue. That may be useful info for those smarter than I to help you work this out.
trenth said:
Hello everyone,
I'm getting no service on my Sprint Galaxy S4 SPH-L720.
I've tried Slimkat 4.4.2, 5.0.1 and Google Play 5.0.1. I get service at times but it keeps cutting out for no reason. I am on baseband L720VPUFNAE, and PRL version 55020. I'm using an app called Roam Control which keeps the phone on roaming mode but it won't stay connected either. Even when set to force roaming it trys to connect to Sprint service. Perviously it would stay connected to Verizon.
Also on Slimkat 5.0.1 when enabling Roam Control it says "please make sure device is rooted" I know it is, because roam control doesn't give me that error on Slimkat 4.4.2 or Google Play Edition 5.0.1
I started having these issues about a week ago, before that everything was working fine. I was on Google Play Edition for a week, and then I started having these issues and went back to slimkat which worked flawlessly.
So to summarize this, phone will not stay connected to roaming no matter what I do. It wants to go back to Sprint, I've tried calling the ##872283# number or whatever it is. That didn't work, it told me it was unavailable and to try again.
Also, one time my cat knocked my phone off the table and it said no sim card inserted so I rebooted my phone and have been having issues since that day.
Click to expand...
Click to collapse
I may be having a related issue. I didn't want to make a separate thread in case this is the case.
My data was just fine about a week ago. Then I decided I'd try out a new ROM because there's a couple things that annoy me with CM12 at the moment, so I tried the GPE ROM. It was all great except I wasn't getting service when I'm at work.
The problem is that this is now the case with EVERY ROM I flash. I also tried nandroid restoring what I had before flashing GPE. I even went back to stock, did the whole PRL and Profile thing, but I still have no service.
What's also a problem is that I have service (LTE) at home, so whenever I get home to try a new thing that will hopefully fix the issue, I can't find out til I go back to work or leave home or whatever. So far, every day has been unsuccessful.
Edit: A weird thing is that even where I have LTE, if I go to view my network status, it shows "Out of service" under Service State, and Mobile Network State as disconnected. Actually just noticed this, but my phone number is 0.
Alright, so further testing has commenced.
I went over to a Touchwiz rom, updated my PRL, activated the phone, and did all of that. Went back to SlimKat 4.4.4 and thought my phone was on "Roam Only". Well turns out I was wrong, the phone is set to Roam Only and I am still trying to connect to Sprint towers while at home (Where I have no Sprint service) so something definately up. Maybe I need to re-root my phone as I am having some weird issues when it comes to root. Can someone perhaps link me to a thread to get started on rooting the device? I don't remember how I did it last year when I bought the phone. But I am comfortable with using Odin and SamsungKey drivers.

Have an Unlocked Model Using it on T-mobile Network Was Said To Ask Here

Well first of all i have an SGH-I337 Sim Unlocked and am using it on the T-Mobile Network. Now I have been told something about a locked boot loader and other things but in all was told to ask my questions here. I am posting this because I want is to root this phone and use touhwiz roms. So to Make this Short as possible. Can anyone link me to any threads (as i know this has been talked about) and tell me what they are for and how to root and rom this phone. I only have experience with the TGS3 on the tmobile network never have i used a phone unlocked from another network and I would love to update this little guy as its an upgrade for me from a gs3 and right now the software are both kitkat.
The phone is An ATT SGH I337 unlocked on the T-Mobile Network
Its running NJ4 Stock
Any questions i will surely answer I hope to figure this out and pimp my phone, jk just make it an upgrade from my sg3 with kitkat so looking for lolipop. I have been told this model has some issue with asop roms but i dont care personally i like touchwiz cause most aosp software seams to be missing something IMO and takes at least a year to be stable i dont care if people say its a touchwiz clone I appreciate new features that work.
TYIA
Read this first: [GUIDE]Odin to Stock, Updating, Rooting, and Installing Safestrap
Then read: Everything you need to know about custom roms.
Then if you have questions, ask.
Thank you i truly appreciate you giving me where to start thank you for the quick answer and hopefully i wont have any problems!!

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