Samsung Galaxy Ace 4 - Perform a soft reset

Perform a Soft Reset

1. Turn the device over so that the battery cover is facing up.
2. The battery compartment release is located on the back of the device.
3. To remove the battery cover, lift the battery cover from the release slot.
4. Remove the battery, then wait 10 seconds before inserting the battery again.
5. Insert the battery with the gold contacts aligned with the battery contacts within the phone.
6. Press the battery down flat.
7. Replace the battery cover.
8. Press the Power button to turn the phone on.

The device has been soft reset.