Lost mobile signal! - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

I'm running sacs rom. And last night sometime I lost my mobile signal. I'm unable to make any calls and have no Internet. And yes I paid my bill. If someone could point me in the right direction it would be greatly appreciated
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Does it show no signal bars and has a red X in it?
I had this on stockish v4 two days ago while I was messing around with random files. I was able to solve it by dirty flashing the ROM again. Then connecting to WiFi and updating profile.
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No. I don't have anything. I even did a clean install of newest rom. I connect via wifi and I get a preparing network and searching for service.
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Okay so I figured out that my radios suddenly disappeared. I tried flashing the latest radios through Oden with a pass. But they are not sticking. Any ideas?
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loumoli said:
Okay so I figured out that my radios suddenly disappeared. I tried flashing the latest radios through Oden with a pass. But they are not sticking. Any ideas?
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You'd need to flash the exact same modem as you had before, however it makes no sense that the modem would just disappear.... Are you sure nothing happened?

loumoli said:
No. I don't have anything. I even did a clean install of newest rom. I connect via wifi and I get a preparing network and searching for service.
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You can try calling Sprint have them reset service or if you have insurance on it take to sprint store, you may have to take it in as stock unrooted. My S4 was doing same thing, but I didn't have insurance on it, so had to send (unrooted) in for warranty service through Samsung to have it fixed.
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Related

[Q] GS4 No Network after Flash

Hey guys...
I just rooted my phone, installed TWRP and flashed my first rom. It installed no problem, but I didn't have any network access so no phone.. kinda pointles.. Guessed it coulda been a bad rom so flashed a different rom and had the same problem. How do I get my network access back...
1st rom was MIUI and second was The Blu Kuban.
Use to flash my OG Evo all the time and never had this happen...
Update the prl and profile
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Do as giantjay said BC if you read in the later posts of the miui thread its got no data problems so something stayed behind.
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devoureddreams said:
Do as giantjay said BC if you read in the later posts of the miui thread its got no data problems so something stayed behind.
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I have updated PRL and PRofile and still no network. It's not just data, it is all network connectivity period. Can't make calls or anything.
Go to your settings>about device and see if your imei and everything is still there
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devoureddreams said:
Go to your settings>about device and see if your imei and everything is still there
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Its all there, has my number as well.
Only other things I can thing of is modem or APN but with apns you should still have signal, and with modem it won't flash through recovery so idk man I'm sorry.
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compalalaska said:
I have updated PRL and PRofile and still no network. It's not just data, it is all network connectivity period. Can't make calls or anything.
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I am having the same issue. I have also updated PRL and Profile. Device information shows as normal. I've gone to complete unrooted stock and still occurring.

Back to stock

Can someone point me into the right direction to going completely stock so I can catch the ota. Thanks.
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P1_e85 said:
Can someone point me into the right direction to going completely stock so I can catch the ota. Thanks.
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What OTA? Most all Roms now ate based on the latest MF9.
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P1_e85 said:
Can someone point me into the right direction to going completely stock so I can catch the ota. Thanks.
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http://forum.xda-developers.com/showthread.php?t=2375523
Here this is the newest update we have so far.
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Whatever ota my phone downloaded. But as you know I cannot just install and restart. Since I am modded.
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P1_e85 said:
Whatever ota my phone downloaded. But as you know I cannot just install and restart. Since I am modded.
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That's why you flash a stock rooted MF9 ROM if you want to be on the latest and rooted.
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daniel4653 said:
That's why you flash a stock rooted MF9 ROM if you want to be on the latest and rooted.
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Ive tried this and still had problems. Hence I want to go back to stock and start unmodded.
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P1_e85 said:
Ive tried this and still had problems. Hence I want to go back to stock and start unmodded.
Click to expand...
Click to collapse
Here's how I did it:
http://forum.xda-developers.com/showthread.php?t=2277480
S4 rebooting as soon as I boot it!?
Hi!
So I followed Djembeys guide to root my s4 back when ME2/MF2(or smthn in that matter)was the newest firmware avable. But now I wanted to go back to stock and update my phone and as stated in the guide that would be no problem, well OTA didn't work so i did it via Kies. It worked as expected for a while before my phone started freezing and rebooting itself forever, like as soon as i get into the launcher.
Things I've tryed to do:
*Checking in download mode that everything is official, it is, and the phone doesn't seem to reboot while in download mode, should I flash a stock rom, I mean, what if the phone shuts off in the middle of the process?
*Doing a factory data reset via stock recovery, the "android" in recovery falls down and a triangle at his stomach. However the data reset worked, but it didn't solve the problem, still reboots but now when the phone is trying to set itself up.
What can i do guys? You think i can send it back to the store seeing everything is official in download mode?

Lost root

I lost root and now this is on my screen after flashing a lock screen mod that broke my wifi. Tried my nandroid and it failed and said I lost root. Has anyone aeen this before?
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primo523 said:
I lost root and now this is on my screen after flashing a lock screen mod that broke my wifi. Tried my nandroid and it failed and said I lost root. Has anyone aeen this before?
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That's odd... Which lock screen mod did you try to install? (make sure it's compatible!)
My advice would just be to Odin it. It's really strange that a nandroid backup didn't take care of it
Did you change the kernel at all?
That pop up looks like one of the things you can do on developer options.
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Thanks guys. Just let sprint. They tried fir 2 hours to makes that message dissappear. Flashed new software several times. The tech finally gave up and ordered me a new phone. She said it was hardware related.
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Updated to 4.2.2, get no signal now

I restarted my phone, reinserted the Sim tried everything I'm still not getting signal, anyone have this problem?
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How did you update? OTA, flash ROM, etc...Have you tried SIM in a different phone? Could be a bad radio? What does your baseband say in System> About phone?
It was the official OTA
I never updated because 4.2.2 killed LTE but then I did anyways
My baseband says unknown
Edit: the 4.3 update came, I tried updating but it said error half way through wtf!!!
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See this a lot, updating killed the radio. You probably don't have an imei number either.
Try flashing an official factory image.
baseballfanz said:
See this a lot, updating killed the radio. You probably don't have an imei number either.
Try flashing an official factory image.
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Yeah no imei number
How do I flash? I'm a huge noob to this kind of stuff, will I have to erase all data?
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Data has been borked since the 8/30 build.
kthejoker20 said:
Data has been borked since the 8/30 build.
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What
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subxero123 said:
Yeah no imei number
How do I flash? I'm a huge noob to this kind of stuff, will I have to erase all data?
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Very good thread here.
http://forum.xda-developers.com/showthread.php?t=2010312
Good luck
baseballfanz said:
Very good thread here.
http://forum.xda-developers.com/showthread.php?t=2010312
Good luck
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Click to collapse
Do not know how to do that... Going to have to RMA this
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subxero123 said:
Do not know how to do that... Going to have to RMA this
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Don't waste time with doing anything else. Flashing the factory image will not get your imei number back and without it, you will never get a signal. When you call to RMA it, be sure to tell them you lost the imei number during the upgrade process. They should have plenty of lost imei cases in the system already.
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Regardless it's safe to just flash the factory update, then see where you can go from there if all fails use that as your last resort
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Lost WiFi

-Safestraped 3.65(latest stable)
-Jellybeans 6 runs flawless
-For whatever reason I can't get Hyperdrive or Baja ROMs to connect to my 5ghz WiFi correctly. I deleted the ROM slot and wiped and wiped and wiped again. But for whatever reason those two ROMs react the same to that WiFi band. As soon as I enter password my WiFi goes dead. Yet if I flash Jelly Beans it works flawlessy. Any thoughts? Thanks
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cubarican84 said:
-Safestraped 3.65(latest stable)
-Jellybeans 6 runs flawless
-For whatever reason I can't get Hyperdrive or Baja ROMs to connect to my 5ghz WiFi correctly. I deleted the ROM slot and wiped and wiped and wiped again. But for whatever reason those two ROMs react the same to that WiFi band. As soon as I enter password my WiFi goes dead. Yet if I flash Jelly Beans it works flawlessy. Any thoughts? Thanks
Sent from my SM-N900V using XDA Premium 4 mobile app
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Click to collapse
Are you following the instructions outlined in Method #2 in this thread:
http://forum.xda-developers.com/showthread.php?t=2528707
Also make sure you are flashing the whole "Stock Tar file". Not just the "Modem Tar File".
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Not sure how that even remotely relates to my problem. Thanks for the suggestion tho.
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cubarican84 said:
Not sure how that even remotely relates to my problem. Thanks for the suggestion tho.
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Click to collapse
There are known WiFi issues with Hyperdrive if you aren't on the latest Firmware(MJE). Your symptoms seem similar to mine before I followed "method 2".
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I am on latest firmware. The thing is that it seems safestrap related to me. Like my rom slot 2 is not wiping correctly. I'll figure it out. Again thanks guys
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