I want to use an old Android Phone as wallet insted of my actual blockchain.info wallet
I want to reset it as new and to keep it only as a bitcoin wallet (only bitcoin) .
I will open it rare becouse i will check my balance in blockchain.info and i use it only for storage .
My question is , what software to use becouse i'm affraid of non-open source wallet like coinomi and i want a good backup becouse is a phone and can die.
thank you .