Well you’re extremely lucky, microwave guy.

Depending on what type of keypad it is, if its all connected or not, you can level it up like a keyboard. If it’s connected try levering up one corner, not the whole thing, and using a blow dryer or something to warm it up under there. If it’s bumons, open the mobile from the back and look for any place you can use a very small screwdriver, or look at the sides, it should have a point where you can unscrew or break away the phone down the middle symetrically at the seams.