Originally Posted by kluteni
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.
Current Device: ATT Samsung Galaxy S4 (i337)
Droid Bionic (GSM Hacked)
HTC Inspire 4G (Desire HD)
HTC Dev Phone 1 (Dream/G1)