Originally Posted by trophynuts
With the sim card out, go to your dialer and type # *#*4636*#*#, then click on phone settings. Change it to AUTO LTE/CDMA. Then just back out of the menus...
That sequence of characters did not work on mine, the asterisk has to be first. I also did not pull the SIM card at all.
Regardless, I found having to type all of that in to be unnecessary since the app LTE Switch takes you to the same screen.
BTW- mine started bootlooping after a simple restart. I noticed my stock battery was down lower than I expected and since I know I hadn't restarted my phone in well over week, I restarted. Nothing was wrong nothing was being used, nothing froze.