What are the steps and hazards of moving account to a new device?
If you switch from iOS to android or vice versa you can find under settings a menu point which is called: connect with an android/ios device. There you can create a code, which you need to enter in your new device.
But i wonder if its possible to play with the same account on iOS and on Android. That would be really great.
I have recently switched from ipad to Samsung Galaxy Tab A android I havent faced any difficulty or problem in my game. I dont think there are any hazards according to my personal experience.