Yes yes you can say you went back in time with a mobile and accidentally killed ben franklin your phone would disappear if no one else found electricity but it doesn't so some one else found it but you find him and accidentally persuade him to not find it by your phone going off it disappears and then your phone reappears and disappears and reapers because you used it to stop electricity being discovered with the phone and if it goes out of existence it must then therefor return as it never existed and didn't cause electricity to not be discovered but when it returns electricity has been discovered and therefor the phone caused electricity to be discovered that my friend is both a paradox and a mind fuck.

You Could Just Not Respond To It

Could Have Been Easier