How to Lock 4G Only Signal on ASUS ZenFone

In this post zenfoneblog will share tutorial How to Lock 4G signal on ASUS ZenFone. If you using cellular data connection then you might have notice that weak 4G signal result in downgrading the cellular network to 3G or 2G. In this tutorial zenfoneblog will teach you how to force 4G only signal on ZenFone without third party apps.

Note: This tutorial only work on ZenFone with 4G (have L on model number such as ZenFone 2 ZE551ML, ZenFone 3 ZE520KL, ZenFone Go ZB452KL, etc)

How to Lock 4G signal on ASUS ZenFone

1. Open Dial Pad and type *#*#4636#*#*
   
2. On testing screen choose Device Information
   
3. Scroll down and choose LTE Only on Set preffered network type
   

This tutorial also work for Lock 3G signal or 2G signal.