Try downloading this free app called DU Speed Booster. This app not only allows you to transfer data from your phone to a memory card , but it also cleans out trash your phone has and has antivirus scans to protect your phone . It also signals you to let you know if you have too many back round apps running and boosts your phone if it's running slow . Also , make sure you access the Google app to back up memory as well -it syncs photos and contacts . Hope it works for you -post if this helped . Good luck