Both the Android and iOS app give the option to back up every photo that is currently on the device into your Forever™ Account. It is a one-time backup; new photos taken after this is done will NOT automatically be backed up to Forever. You can access these settings by completing the following steps:
1. Click on your icon (iOS) or three bars (Android) in the top left.
2. Select Back Up This Device (Android) or Back Up This iPhone (iOS).