Being able to sync worlds with your account(MCPE)

As of right now there is no easy and clear way to save your World in your in devices like phone and tablet. So when  you change your device there is no way of getting your world back and that sucks. So if we are able to sync our worlds to our accounts it will make us happy. Instead of lossing our worlds. Pls take this to consideration as a lot of people play on mobile or tablets.