Shaky cam alien movie

I watched a movie quite a few years ago that i was intrigued to watch again however I can't remember the name of it and would love some help if anyone knows.
Some of the key things I remember are:
It uses shaky cam a lot as if the movie were shot on a phone
It involves kids / teenagers trying to find pieces of alien tech
There is one scene distinct in my memory of a house party that the police are called to
I know its not much to go off but if anyone knows then that would be great, thanks