Rom: CM11 Nightlies 2/4/14
Modem: Mk2 baseband w/Mdl non-hlos
I have searched and tried methods of trying to get LTE working by *#*#4636#*#* and selecting LTE/GSM auto (PRL) but the setting never sticks and it reverts back to GSM auto (PRL). I have also tried under settings/mobile networks/preferred network type to LTE/GSM/WCDMA and that always reverts to GSM/WCDMA auto. I also have tried different APN settings "ATT Phone" should be right although I have tried ATT LTE pta and ATT wap.cingular.
When I select the LTE options I do receive an LTE signal until I make a phone call or lose signal/reboot. It then switches to Hspa+ and never automatically back to LTE.
I first thought it was a hardware issue but I tried a GPE rom and LTE worked great! Too bad GPE isn't CM
I'm bummin... any ideas?