If I got a new phone or even just a second phone I'm ok with reimporting my wallets to xumm, no big deal. But what is my current address book linked to? It would be quite tedious to have to start over with a blank address book every time I change devices or install xumm on a new device. Can this be linked to Google play services or something to sync my address book? Or is it possible to at least implement the import/export of the address book to a file that I could move between devices.