The worst thing you can do for your memory is constantly multi-task.
Multi-tasking has been proven time and time again to simply not work. So if you’re trying to study for a big test, but you keep toggling back to Instagram, you’re probably not going to remember things as completely or efficiently than if you would by simply studying and doing nothing else.
The one main theme for increasing your memory is clear: Take some time to be alone — aka apart from your phone. Need I say more?