SPH-L720 unlocked for ATT question(s)

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kluteni

Member
Apr 7, 2014
13
1
I just successfully flashed the modem/rom/etc on my new S4 for ATT. I have service with H+ on ATT but I am unable to get LTE, GPS, or MMS messages. Does anyone know if there is a way to get these functions working yet on this phone?


4.4.2 Firmware.
 

Red_81

Senior Member
Dec 5, 2010
1,366
671
St.Louis Metro
Sounds like the apns are messed up. Maybe search for what they should be and verify against what is set on your device.

Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
 

kluteni

Member
Apr 7, 2014
13
1
I have verified the APN is correct per another ATT S4 stock and my old S3 LTE APN, still no LTE. let me remind you that this is a n unlocked SPRINT phone with GSM enabled as primary connection..
 

DeadlySin9

Senior Member
Sep 2, 2012
1,475
703
Google Pixel 8 Pro
I have verified the APN is correct per another ATT S4 stock and my old S3 LTE APN, still no LTE. let me remind you that this is a n unlocked SPRINT phone with GSM enabled as primary connection..

Make sure the network mode is set to LTE/WCDMA/GSM or something with LTE if you have other options. Also, i'm not entirely sure the Sprint model has the same LTE bands enabled.