There’s a new feature of automatic Photo Sync for iPhone and Android devices which imports photos via Wi-Fi or the cell network. But if you want to opt out of this option, in case you have enabled it on your device then guide below will help you to do that easily.
Turn Off Facebook Photo Syncing on Android
Open Facebook app and tap on main “Menu”
Scroll sown and select “Account” > “App Settings” > “Sync Photos” and there select “Don’t sync my photos” and that’s it
Turn Off Facebook Photo Syncing on iPhone or iPad
Open Facebook app and go to your timeline and tap on “Photos”
At the bottom of screen, tap “Synced”, then tap on gear icon and select “Turn off Photo Sync” > “Don’t sync my photos” and that’s it