From the time you successfully registered for a mysms account, all your messages are saved in the mysms cloud. In case you need to re-install the app or if you want to use mysms on your new smartphone, it is possible to restore your texts using this feature.
Reinstall the mysms app for Android phone and sign in with your existing mysms account. Afterwards the last 1,000 messages are synced to your phone from the mysms cloud.
This feature is only available for mysms Premium users.