Android app needs to run on Android 6.0.1+
The app needs to:
Save all Facebook Messenger messages (just textual messages, no images)
Save SMS all messages
Upload backup file with Facebook Messages and SMS messages via FTP every 12 hours.
Make app hidden from App drawer after installing the app by pressing a hide app button.
Limit backup file size to 30MB.
Use custom icon and name that i will provide.