The fake mental condition of constantly thinking your mobile phone is vibrating in your pockets, signalling a call or a message, when in reality, it isn't and there was no call or message. This leads to the phone owner constantly pulling their mobile phone out to check.
Person 1: -Checks Phone. Dude! I think have phone paranoia!
Person 2: Ah I've had that for ages, it's so annoying
Person 1: Definitely, i look like a fool always checking my phone.