Is the account linkable?

I would really like this game can be play on another device instead i have 3 device and 3 different account. Why it cant be only 1 account 1 character on 3 device, if my mobile phone is under charging, i would really hate to touch it cause it is hot. So i play using my other phone, and when i downloaded it and start the game it gave me a brand new character. This only really annoying to train 2 character. So i wish theres a way to link my account to another device, sorry for my broken english. And thanks.

Same I'm getting new phone but hmm the Account isn't linked

There's a notification when you first start playing that your account isn't stored on the server..

I have same prob. what to do?