Galaxy J3 - How do I Move Apps on my Samsung Galaxy J3 to a microSD™ card?
Save storage on your device by moving Android™ apps to your microSD™ card.
Screen display may vary depending on your mobile carrier.
This function is not supported if the microSD™ card is not inserted in your device.
Move Apps to a microSD™ Card
Not all apps can be moved to the microSD™ card. Apps that can be moved will display CHANGE on the screen.
From your Home screen, touch Apps.
Navigate to Settings > Applications > Application manager.
Then, select the app you would like to move to your microSD™ card.
After making your selection, touch Storage > CHANGE.
Touch SD card to move the selected app to your microSD™ card.