Easiest way on how to switch over to 3g mode only and 4g mode only without stress.
Simply dial *#*#4636#*#*
Tap on phone information and select which mode you want.
Very simple and reliable!
Feel free to switch over to any form any day❤️
The ussd works, but when you switch it to 4G only, they won't Be network, when you reboot it change to custom, settings
Works on only a 4g device.
You can't switch to 4g if your device isn't 4g enabled.