"1996: The Israeli secret service finds that a cell phone can be used for things other than chatting with friends. It also makes a pretty nifty little bomb for disposing of an enemy, which is what happens to Yahya Ayyash on Jan. 5, 1996 when he tries talking on a booby-trapped phone " https://www.wired.com/2007/01/introducing-the-cell-phone-bom...

Plenty of other things that adults can do and kids can't do that doesn't kill anyone lol.

You can definitely kill someone with a cellphone.