That's Interesting (2013)

4 Swedish girls and 3 Swedish men stop over in Serbia on their way to a Turkey seaside holiday. They all lose their mobiles and when one of their car breaks down, they are forced to go to a nearby village to find a mechanic shop. They encounter all sorts of comic incidences in the village. When they are informed by the mechanic that the spare part is only available in Belgrade, they decide to visit the only local person with Internet connection. She turns out to be a witch and while playing around with her computer, they let loose a demon from the Internet.