IMO Q2 Plus
Android 8.1 (Go edition)
1 Remove back cover
Turn the back of your phone towards you. Take hold of the back cover and remove it.
2 Remove the battery
Take hold of the bottom of the battery and remove it.
3 Insert battery
Place the battery in your phone (top first), matching the battery contacts with the phone contacts, and press the battery into place.
4 Replace back cover
Place the back cover on your phone and press it into place.