[Q] Sph-L720 - No mobile data ... Cant activate. - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

So here I am...that guy. I bought a Sph-L720 and I didnt check until It was too late. I think the previous owner downgraded the modem. It was running a stock rooted rom when I bought it Mk2 I believe but am not sure. I have since installed a complete mk2 stock firmware, modem, rom all inclusive which was downloaded from this forum. Anyhow any help would be appreciated in getting this thing up and running. Shows 3 bars of service.... just no data. Has a sprint sim card installed. Thanks ... - Dave(that guy)

Connect to WiFi and dial ##72786#.
Sent from my SPH-L720 using Tapatalk

Thank you! You are my personal hero
What was that menu... that saved me. Thank you so much... I hit the button ... and Id gladly click it a thousand times again.
- David
daniel4653 said:
Connect to WiFi and dial ##72786#.
Sent from my SPH-L720 using Tapatalk
Click to expand...
Click to collapse

Glad you are up and running.
Sent from my SPH-L720 using Tapatalk

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
Sent from my Sprint Galaxy S4 using Tapatalk 2
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.
Sent from my SPH-L720 using xda premium
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.
Sent from my SPH-L720 using xda premium
Click to expand...
Click to collapse
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
Sent from my SPH-L720 using xda premium
devoureddreams said:
Go to your settings>about device and see if your imei and everything is still there
Sent from my SPH-L720 using xda premium
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Click to collapse
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.
Sent from my SPH-L720 using xda premium
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.
Click to expand...
Click to collapse
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.

Terrible after flashing Tar

Hello ever since i flashed the crawjs MF9 tar my lte speed is terrible and my friend same phone stock gets 20mbps where i get 1mbps if that ive flashed different roms hoping to fix it i updated profile and prl still no luck someone help me thanks in advance
Go back to stock unrooted and perform a factory wipe.
Or also on a touchwiz ROM do a ##72786# in the dialer. It reactivates your phone.
Sent from my SPH-L720 using Tapatalk 4
jamal717 said:
Hello ever since i flashed the crawjs MF9 tar my lte speed is terrible and my friend same phone stock gets 20mbps where i get 1mbps if that ive flashed different roms hoping to fix it i updated profile and prl still no luck someone help me thanks in advance
Click to expand...
Click to collapse
First confirm that your baseband and software version say mf9 in about device. If not you need to install the modem again. I have experienced, on occasion, where installing the stock tar from Odin doesn't always update everything on the first or sometimes even the second try. Also what Rom version is your friend using? If your modem is mf9 and his is something else maybe the modem is a problem in your area. I am using it with no speed issues.
Sent from my SPH-L720 using Tapatalk 4
crawrj said:
First confirm that your baseband and software version say mf9 in about device. If not you need to install the modem again. I have experienced, on occasion, where installing the stock tar from Odin doesn't always update everything on the first or sometimes even the second try. Also what Rom version is your friend using? If your modem is mf9 and his is something else maybe the modem is a problem in your area. I am using it with no speed issues.
Sent from my SPH-L720 using Tapatalk 4
Click to expand...
Click to collapse
See well now i flashed that blue kuban rom so it says
Software version- MDL
Baseband MDL
Kernel is ktoones
Idk where the modem is...
what do you think i should do?? if its the modem where do i find an appropriate one? I kind of want to go back to 100% stock but even when i flash Crawjs mf9 it still says MDL in my settings about.... Could this be the issue? If so what do i do
daniel4653 said:
Go back to stock unrooted and perform a factory wipe.
Or also on a touchwiz ROM do a ##72786# in the dialer. It reactivates your phone.
Sent from my SPH-L720 using Tapatalk 4
Click to expand...
Click to collapse
I will try this also
Edit: that did not do the trick :\ thank you for the response tho
jamal717 said:
See well now i flashed that blue kuban rom so it says
Software version- MDL
Baseband MDL
Kernel is ktoones
Idk where the modem is...
what do you think i should do?? if its the modem where do i find an appropriate one? I kind of want to go back to 100% stock but even when i flash Crawjs mf9 it still says MDL in my settings about.... Could this be the issue? If so what do i do
Click to expand...
Click to collapse
I know this will sound odd but Odin the tar a couple of times back to back or until about device shows mf9 for everything.
Sent from my SPH-L720 using Tapatalk 4
The crawj tar? Alright I will when I get off work idk why it didnt say mf9
Sent from my SPH-L720 using xda app-developers app
jamal717 said:
The crawj tar? Alright I will when I get off work idk why it didnt say mf9
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
Yeah or completely stock mf9. Either one will work. It happens to me also. Not sure why it doesn't always take on the first try.
Sent from my SPH-L720 using Tapatalk 4
Okay ill try both have yiu ever had the data issues tho
Sent from my SPH-L720 using xda app-developers app
jamal717 said:
Okay ill try both have yiu ever had the data issues tho
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
No I haven't had that problem. But I also just got 4G in my area about a month ago so I don't have very much time on it.
crawrj said:
No I haven't had that problem. But I also just got 4G in my area about a month ago so I don't have very much time on it.
Click to expand...
Click to collapse
Okay I am having terrible luck i downloaded your tar again stock rooted odexed mf9... flashed it through odin it passed rebooted stuck on yellow sprint sign :\ im now in the process of reflashing through odin.... I want my note back lol
Flashed everything says mf9 still bad lte speeds I kay return this to the store
Sent from my SPH-L720 using xda app-developers app

[Q] experience with no data and reception on new darthstalker rom?

I was hoping i can get someone to help me! i recently uodated my phone to the new darthstalker rom for a canadian varient S4. everything works perfectly fine but my reception is extremely weak and i data doesnt seem to be working. i was hoping someone can help. I am a noob to all this stuff
Do you have the mk6 radio
Sent from my SGH-I337M using xda app-developers app
JGAGNON10 said:
Do you have the mk6 radio
Sent from my SGH-I337M using xda app-developers app
Click to expand...
Click to collapse
I have no idea what that is lol. when i mean noob im mean like only ever flashed once. where can i get mk6 radio?
Modems/baseband/radio is all the same.
Could also be simply APN settings.
Google is your friend, use it
ROOTED ATT MK2 using Tapatalk
jball said:
Modems/baseband/radio is all the same.
Could also be simply APN settings.
Google is your friend, use it
ROOTED ATT MK2 using Tapatalk
Click to expand...
Click to collapse
Okay so MK6 would just be the baseband? okay ill google and see if i can fix my problem
Thank you!
jball said:
Modems/baseband/radio is all the same.
Could also be simply APN settings.
Google is your friend, use it
ROOTED ATT MK2 using Tapatalk
Click to expand...
Click to collapse
SO i did a bit of research and understand that if this is the problem i need to flash MK6 onto the phone? and i need to use odin if im correct?
becuase reception and data wasnt working ive returned back to using the Darthstalker version 4 rom.
version 4.2.2
baseband i337mvluamdj
im assuming that i do indeed ned MK6 to run Dartstalker version 10 rom on andorid 4.3?

Lost mobile signal!

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
Sent from my SPH-L720 using xda app-developers app
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.
Sent from my SPH-L720 using Tapatalk
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.
Sent from my SPH-L720 using xda app-developers app
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?
Sent from my SM-N900P using xda app-developers app
Click to expand...
Click to collapse
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.
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
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.
sent from nowhere

PLEASE someone helps me.!!!

i pursased a used sprint galaxy S4 and i leave in Europe and i can't connect to the network via sim card.i have my phone rooted and i have try many roms with no success!! today i flash a Tmobile rom with t mobile kernel and then Danvdh-ge 4.4.2 rom again with same results.in settings i saw that it finds sim card APN and in manual search the network(sometimes) but it can't register to it.Can i flash a Europe rom??and how?will this fix my network problem??THANKS
First are you already unlocked?,
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daniel4653 said:
First are you already unlocked?,
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i have try both service menu unlock and s4 flash through http://forum.xda-developers.com/showthread.php?t=2415587 if you mean this...

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