“Smart phones break down more than any other device.” 5:00 into Which phone, laptop and tablet brands break down the most? (Marketplace)

Most likely explanation is from the comments —

“You need to understand that the microwave emitting devices … microwave themselves. They break themselves down through material degeneration, same as they break down your body.”

https://www.youtube.com/watch?v=yBnkUA3wnn0