Finally slapped my sim card and 128gb card in this bad boy.
No need to reformat card everything carried over just fine. (backed up anyway)
As for the sim card, I noticed in settings>more>mobile networks>network mode, selecting GSM/WCDMA/LTE auto it gets 4 bars sometimes 5.
Under GSM/WCDMA auto it gets 5 bars off the bat.
Also I noticed it doesn't show 4G LTE in my area and I am dead center and always got it to show LTE with my G3.
Anyone notice this? Maybe the G4 OS doesn't show this at all or has anyone seen it show LTE?
I just slapped the sim in from AT&T and everything seems to work fine minus not showing LTE.
If anyone knows another APN setting to show LTE please let me know.