How to remove tough screws or stripped screwsRemoving tough screws during an iPhone or mobile repair, can be a challenge. The Y000 tri-tip on iPhone 7, 7 Plus can be especially tough and it is easy to over-torque and strip the screw or screwdriver. First you have to determine if the screw is stripped or if it is the screwdriver.
Here are a few videos to help you troubleshoot tough screws or stripped screws and remove them. Includes the rubber band technique if screw itself is worn.