If you use the same iPhone or iPod Touch for a while, something in the power buttom at the top wears down and it stops popping upwards, and you have to press it

If you use the same iPhone or iPod Touch for a while, something in the power buttom at the top wears down and it stops popping upwards, and you have to press it in very hard to activate it. Happened to my iPod Touch back in the day and was apparently a common problem.