Decent watch, probably won't watch again, and can't really recommend.
The movie is good enough. Danielle Panabaker and Brenda Song do a good job carrying most of the movie, but I don't know told Taran Killam he could play a teen pop star.
The ladies look about 5 years older than their schoolmates, and Killam about 5 years older than that, so it's super awkward anytime they share the screen with other actors.
This is "teen drama" mixed with "swapped phones" and a bit of "blackmailed celebrity". The story just doesn't have a lot of substance, there isn't any lesson, and the characters are barely redeemable when it comes down to it.
It's a fun, maybe younger audiences might like it more, but most likely the dated technology is going to be off-putting for them.