You have to turn it off and on every time you restart your phone but to turn it off first open up a terminal app and type in su. Then type in pm getInstallLocation. It will tell you if it is external or internal. If it is internal that means it is your phone memory. External is your sd card. After that type in pm setInstallLocation 2. Again type in pm getInstallLocation to see if it changed. If it didn't type in pm setInstallLocation 1.