Where and how do I change card backs and characters on an iPhone please?
Thanks.
Well i dont know about i phone firectly but on android you can do that in the filter option.
The option where you can search for cards or mana cost
There is a button in form of a hero portrait and in form of a card
There you can change it.
I hope its the same on iphone
Good luck 
Not sure about that.
Surely somebody must know it is it a tech question?!
You probably get an answer on the us forum under the tech section or support section