Prince DOES NOT mess around when it comes to cell phones at his private shows ... and had the lead singer of Foster the People KICKED OUT last night when he violated the rule.
TMZ was shooting footage when Mark Foster -- the guy who sings the annoyingly overplayed "Pumped Up Kicks" song -- was escorted out of The Sayers Club when someone saw him tooling around on his iPhone.
Foster begged and pleaded with security to let him back inside -- using every tactic in the book:
-- I have a tab at the bar I didn't close!
-- I promise I wasn't taking a picture, check my phone!
-- I'm a musician, I understand ... I won't do it again.
... and of course, "I'm Mark Foster ... from Foster the People."
After a couple of minutes in limbo, security gave Mark a break and let him back inside ... but only after they MADE HIM check his phone.
I know i'm going to get warned for this but Prince is a major asshole.
Prince is the BIGGEST DIVA ever, you can be a Nobody or the ****ing Queen Elizabeth, if he says NO to phone, it's means NO... And He will kicked you out..
not to mention the amount of my co foster children clocking me and insulting me as well
At least he tweeted you and not to mention he also DM'd you
The DM thing made me love him even more. This just shows that he is a really true gentleman by even having thought of sending you a direct message in the first place and actually doing it.
and not being clocked by the security guards one day after he clocked me on twitter 
those followers can stay mad cuz u got a dm and they're uglee 
Yall better pay DUE RESPECT! Bow to the King Prince