What is stopping you from using a mobile wallet like MyCelium or Coinomi? Using these wallets you can back up your private keys by using a passphrase. The backu

What is stopping you from using a mobile wallet like MyCelium or Coinomi? Using these wallets you can back up your private keys by using a passphrase. The backup is stored in the cloud and can be easily recovered if you ever lose your phone (just make sure you remember your passphrase).