hi new to android, how do you tell were an app will save by default? reason i ask is because i downloaded the argos app and it saved to sd card and wiped the card. took more care and tried to keep apps off sd card. today downloaded british gas app, that also saved to card, read all the permissions but nowere does it say it would save to card. can you block access to card and save on device? device is samsung galaxys 5.0 wifi.