I’ve dealt with this issue a few times with eBay phones, Some ways I dealt with rounded bottom screws was to superglue the bit to the screw and let it sit there for like a day and that trick worked. More destructive ways are to well get a small drill bit and drill the head of the screw off. Or the final way after everything fails is to separate the screen from the plastic rails that run along the side of it, keep in mind this will most likely destroy the screen but you’ll have access to the internals but it will leave the hole plugged up with a screw. [br]