Hey, I installed the app first time today. I have to say there is the same problem on my redmi 3s.
I can't play the game offline (logo - crash), online everything works perfect. If turn WiFi off during game, I can't safe or open a new map - crash....
I tried to reinstall several times including the deletion of every Minecraft file which was left on the phone.
Anybody help please?
I discovered now, that it works on my device (Redmond 3) if I give the app permission for mobile data even if they are turned off.
But still I can't login to Xbox account while data's or WiFi are turned on...