You probably need to change your radio band settings. Dial *#*#4636#*#* then select the option for lte/cdma/evo/gsm , you'll know it when you see it
im on 238, soon 242 (will check) but both those things most assuredly occur. my fix was... tasker. but then again my fix for EVERYTHING is tasker...
Get app Better Battery Stats.
Separate names with a comma.