@thatbloke
Some questions :

Are you still using this phone with Ubuntu Touch ? Daily usage or just a toy to play around with ? Did you own the phone or did you buy a used one ?
If so, please give us some details like : Price/Age/Battery status/Overall condition of the phone. Any idea if there are any reliable replacement batteries available for this phone ?!

I have always been a fan of the Xiaomi Mi Mix models so having one as a daily device with Ubuntu Touch on it would be AWESOME!!! 😃