Mini-Albums is a feature that allows you to view backed up photos without needing to connect your phone to Qubii. You can turn on this feature in :
Qubii app Settings > Backup Items > Backup Camera Roll.
Qubii App compresses file sizes of your backed up photos and stores them in the Qubii app. This feature allows you to view photos at anytime, without having to be connected to Qubii.