Method 1, first of all, use your thumb to slightly force at the bottom of the opening, so that the rear shell butt is lifted, and when you see a gap, use your thumb nail to slide along the gap to the edge, the gap is expanded bit by bit, and when you slide to the bayonet, the bayonet is easy to slide out.
Method 2:
1. Pinch your phone up and down between two fingers
2. Then find a thin cloth or towel and place it on the right side of the phone, where the phone case meets the phone
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3. Bend out and slide down.