Help No Service - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

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.

Related

Canadian ROM only shows 4G signal icon (with LTE speeds) - why ?

Hi all,
I recently bought a Galaxy S4 337M that was rooted and loaded with a custom ROM. I decided to go back to stock so went to sammobile.net and got the latest rogers firmware for my galaxy S4 (which they said was 4.3).
I loaded with ODIN, all went well, rebooted stock, but the max signal icon I can get now is 4G (even though I used speedtest and am getting close to LTE download speeds I think). Any idea why my LTE is gone ? Did I download the wrong ROM ?
I also noticed that none of the APN settings were there and no rogers apps were installed either. Makes me wonder if it was indeed a stock rogers rom after all.
Another strange thing is that it shows me a bell canada navigator update is available in the google play store, yet its not even on my phone. Regardless, even if its a Bell ROM by some chance, Bell Canada has LTE as well, so I am confused.
Btw I used the standard ltemobile APN settings that I always use on all my phones to get LTE (that always work)....
Any help or suggestions would be really appreciated, thanks so much !!!
My iPhone shows LTE using the same SIM...
PS. If I do need to get an original Rogers ROM, is sammmobile not the best place lol ? Any other places to go??
captiv123 said:
Hi all,
I recently bought a Galaxy S4 337M that was rooted and loaded with a custom ROM. I decided to go back to stock so went to sammobile.net and got the latest rogers firmware for my galaxy S4 (which they said was 4.3).
I loaded with ODIN, all went well, rebooted stock, but the max signal icon I can get now is 4G (even though I used speedtest and am getting close to LTE download speeds I think). Any idea why my LTE is gone ? Did I download the wrong ROM ?
I also noticed that none of the APN settings were there and no rogers apps were installed either. Makes me wonder if it was indeed a stock rogers rom after all.
Another strange thing is that it shows me a bell canada navigator update is available in the google play store, yet its not even on my phone. Regardless, even if its a Bell ROM by some chance, Bell Canada has LTE as well, so I am confused.
Btw I used the standard ltemobile APN settings that I always use on all my phones to get LTE (that always work)....
Any help or suggestions would be really appreciated, thanks so much !!!
My iPhone shows LTE using the same SIM...
PS. If I do need to get an original Rogers ROM, is sammmobile not the best place lol ? Any other places to go??
Click to expand...
Click to collapse
I believe that all I337M uses that same firmware but you need a CSC changer to make it change to your carrier as they don't release the specific ones with the carrier apps.
Search "Samsung CSC" in the play store and you should get one.
Thanks for the reply.
Seems I need root - which I deleted when doing a factory restore.
The strange thing is that it was supposed to be a rogers based firmware that I downloaded and flashed.
Maybe something went wrong in the flash.
Will try again.
And check out the CSC
i have a bell i337m and i have the same issue when flashing from a "custom rom to stock" and i have to flash the firmware using odin a second time and than i get my LTE icon enstead of the 4G icon, sounds weird and i can't explain why it takes 2 flashes to get it to show up proper, but it does.
i also have the problem with missing phone vendor apps, the second flash also makes these show up too.
also another thing i noted about my phone is if i don't root and install recovery to wipe, odin will dirty flash my roms, even though odin is supposed to wipe it isn't.
i've tested this to no ends, the results are 100% the same everytime.
Amb669 said:
i have a bell i337m and i have the same issue when flashing from a "custom rom to stock" and i have to flash the firmware using odin a second time and than i get my LTE icon enstead of the 4G icon, sounds weird and i can't explain why it takes 2 flashes to get it to show up proper, but it does.
i also have the problem with missing phone vendor apps, the second flash also makes these show up too.
also another thing i noted about my phone is if i don't root and install recovery to wipe, odin will dirty flash my roms, even though odin is supposed to wipe it isn't.
i've tested this to no ends, the results are 100% the same everytime.
Click to expand...
Click to collapse
After flashing the stock Rom, go back into stock recovery and wipe data and cache, then reboot that should fix it. To fix your csc issue there is a way to do it by dialling a number on your dialpad which includes your imei number then you choose a specific code. Search for it, google
Sent from my SGH-I337M using XDA Premium 4 mobile app
Thanks so much for the replies and help.
I wiped the rom just for fun and rebooted and noticed that its actuality a BELL ROM (all stock BELL apps etc), but when I entered my rogers APN settings it still only showed H+, maybe due to network differences. It's frustrating because I specifically selected a Rogers S4 ROM from Sammobile.net. Any idea where I can get a stock rogers ROM for s4? Also do you think this may have affected my 4G/LTE issue ??
Either way, I will definitely flash the correct ROM twice, and then go back into stock recovery to to wipe data and cache.
Thanks again for all your help
captiv123 said:
Thanks so much for the replies and help.
I wiped the rom just for fun and rebooted and noticed that its actuality a BELL ROM (all stock BELL apps etc), but when I entered my rogers APN settings it still only showed H+, maybe due to network differences. It's frustrating because I specifically selected a Rogers S4 ROM from Sammobile.net. Any idea where I can get a stock rogers ROM for s4? Also do you think this may have affected my 4G/LTE issue ??
Either way, I will definitely flash the correct ROM twice, and then go back into stock recovery to to wipe data and cache.
Thanks again for all your help
Click to expand...
Click to collapse
follow this guide, http://www.droidviews.com/how-to-change-csc-in-samsung-galaxy-phones/ real easy, itll put you back to a rogers rom, all the firmwares on sammobile are BELL ROMS. you have to change the CSC yourself.
THAT WORKED
Thanks so much !!!

T-Mobile GalaxyS5 m900t LTE issue

Just joined from the iphone world to the android world after about 3 years. Wow. =]
Anyway, just bought the phone yesterday, activated it an within 15 minutes had it rooted phiz recovery and and installed AllianceRom 3.1 on it.
I've had a bit of an issue, It will not go LTE. It only stay on 4g or go to E,, H+, my friend who has an iphone, same provider and same service, his phone shows LTE in our same location at his desk but mine will not go above 4G.
Did I do something wrong with the root process? Anyone ever seen this issue? I'd say its an issue with the service but when you have a friend with the same provider and his phone is showing LTE, it begs to ask questions
Thanks all,
Alan
do a speed test and u will know, i think on yr ROM 4G = LTE, H+ = 4G, also check yr APN too.
Got it Hope this helps new rooters
koolboyztn said:
do a speed test and u will know, i think on yr ROM 4G = LTE, H+ = 4G, also check yr APN too.
Click to expand...
Click to collapse
I checked it out, I found that it was a combination of a couple of things,
When I bought the phone I rooted it immediately, didn't officially update it or anything. I was working on the older radio with the newer Alliance rom which required the latest radio.
The only way I was able to fix it was use Kies, update it, which put it back to stock recovery and stock rom. Reroot using Odin and install Omega's rom. It would of probably worked fine with Alliance rom but I saw a couple things I liked with Omega.
When I updated stock I saw LTE. Which told me that it was a radio issue, I tried updating the radio manually but it failed so I just let Kies do it.
All settled and done, it's purring like a kitten now Thanks Koolboyztn for your suggestion

[Q] Help needed, no cell service 4g works

Hi guys,
I messed up my gf's s4 last night. Was previously using sacs custom on a mf9 base (unlocked, twrp) Tried updating to Aokp so she could use her new G watch. I was messing with the radio settings after flashing aokp for whatever reason, using Radio Switcher from the market, and now the phone no longer has service. 4g works for whatever reason but no 3g, calls or texts come through. Tried one click odin back to stock mf9 in hopes it would work, but no cigar. Any help guys?
Thanks
Mods please close, ##72786# from the stock dialer fixed the issue.

[Q] No 4G/LTE in my LG G2 D802.

Hey guys,
As you can read in the tittle, my problem is that I don't have 4G/LTE I get 3G+/3G or HSPA+/HSPA.
Right I'm running Lollipop with the custom ROM, BlissPop with B14ckB1rd Kernel. I tried other ROMs (CM, RR, Paranoid) but I don't get 4G in neither of them.
I lost my 4G a quite ago, don't remember exactly how but I can imagine it was when I tried those early Lollipop builds, after that I went back to KitKat and the 4G was gone, even I tried going to full stock but neither that work.
I'm sure is a phone problem because I been with 2 different carriers and couldn't get 4G. The SIM card is brand new and today I spent around 2 hours talking with the Tech Support of my carrier checking everything is all right.
I also tried to change the Baseband/Modem/Radio (Right now I have Cloudyfa KK for the D802).
This might be also helpful for guess what could be the problem, when I dial *#*#4636#*#* go this phone information, down to prefer network type and select LTE only I lose service, by the way, in that configuration I have selected LTE/GSM/CDMA auto (PRL) and USA radio band.
I'm open for all kind of suggestions, If you need more information don't doubt in asking me.: fingers-crossed:
Asiier said:
Hey guys,
As you can read in the tittle, my problem is that I don't have 4G/LTE I get 3G+/3G or HSPA+/HSPA.
....:
Click to expand...
Click to collapse
I am having exactly the same issue. I have been going around in circles since days. Recking APN settings constantly etc. Going mad. Would be great to find a solution together!
damnation333 said:
I am having exactly the same issue. I have been going around in circles since days. Recking APN settings constantly etc. Going mad. Would be great to find a solution together!
Click to expand...
Click to collapse
Well is good to know I'm not the only one.
Could you share more information?, like when and how it happened, so we can figure out what is wrong.
Today I'm going to try to get some logs, and check the system folder.
It happened to me with stock lollipop v30d vodafone ITA with another carrier sim (TIM). Solved after flashing v30a open ITA kdz.
jnr88 said:
It happened to me with stock lollipop v30d vodafone ITA with another carrier sim (TIM). Solved after flashing v30a open ITA kdz.
Click to expand...
Click to collapse
I'm gonna try it, will send feedback as soon as possible.
Sent from my LG-D802 using xda Forum
No luck, I installed the V30a Italian version as you suggested but as you can in the screenshots no 4G at all, when I try to force LTE (This time with the command 3845#*802#) is lose service like in my last ROM, so I'm almost sure is hardware and not software.
Can some confirm me that, cause when you go back to stock by a kdz or how ever their is not residual imformation, every thing is fully clean right? Or some firmware just stay for ever?
If you guys have more suggestions that could try before I send it to somewhere for get it repair.

Help with MotoX Pure on Verizon. Only has cellular data, no voice/sms.

I purchased a used Moto X Pure Edition on Swappa. The phone was rooted, but the seller flashed it back to stock (as far as he told me). I was hoping that I could eventually get the OTA for nougat when it came out, so he assured me that the phone was in "stock" condition.
When I received it, I went to a verizon corp store and got a new sim and they activated the phone on my account. I see 4G LTE and data works great, but when attempting voice calls it says "no cellular network available". SMS messages don't send. I called verizon tech support and we changed some settings around, but it never worked. Guys at the corp store had no clue. The sim works fine in my old verizon galaxy SIII.
Someone on a reddit thread suggested that I check the firmware. It currently reports as: 24.12.18.clark_retus.retus.en.US.retus Does anyone know if this is correct? Is there anything I can do to get this working, or once it's rooted is it really impossible to get it back to stock, or has the seller somehow screwed it up during flashing?
Thanks!
UPDATE: It seems to be fixed after re-flashing the factory image from motorola. I used MPH24.49-18_18 from this page: https://motorola-global-portal.custhelp.com/app/standalone/bootloader/recovery-images#
I'm on VZN - was rooted running CM13 then Slim Rom then went back to stock (PITA) So it can be done ( my firmware : 24.221.4clark_retus.retus.en.US retus) but why would you want to go stock? I only did thinking we were getting Android N soon but that doesn't seem to be happening. Root the phone and throw a custom Rom on it. You will be happier. Have you checked the network type? and the APN?
MedzHovig said:
I'm on VZN - was rooted running CM13 then Slim Rom then went back to stock (PITA) So it can be done ( my firmware : 24.221.4clark_retus.retus.en.US retus) but why would you want to go stock? I only did thinking we were getting Android N soon but that doesn't seem to be happening. Root the phone and throw a custom Rom on it. You will be happier. Have you checked the network type? and the APN?
Click to expand...
Click to collapse
I've switched the network type (global and then LTE/CDMA). The APN that is default selected is Verizon Internet. But, I've tried all the other APNs as well.
I'm worried at this point that I'll never get it to work with voice, whether it is rooted and rom'd or not.
Try Flashing to CM 13 or Slim6 both worked for me.. Please dont hate me for asking.. you sure you have the sim in the right way? I know this try is tricky
MedzHovig said:
Try Flashing to CM 13 or Slim6 both worked for me.. Please dont hate me for asking.. you sure you have the sim in the right way? I know this try is tricky
Click to expand...
Click to collapse
Not hating. I'll take any help I can get. Yes, I'm certain I put the sim in correctly. Cellular data works, and the phone shows as being on the Verizon network, just not voice enabled.
I'd rather not root and flash at this point, as I'm likely going to return it as non-working. Unless someone has any other ideas?
Well, I guess I fixed it. I reflashed the factory image from this page: https://motorola-global-portal.custhelp.com/app/standalone/bootloader/recovery-images# and the sim is reporting voice and data, and calls and sms are working. I'm not sure what image the guy that sold it to me flashed, but it was obviously wrong or he didn't do it right. Thanks for the help!

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