Please I want to this movie's name:
It starts with some guy want to destroy his mobile when a virtual girl came out of this mobile and then we move back to the past to this mobile's story.

I remember this guy seeing his brother's girlfriend by the pool, so he asks the mobile to look like his brother and then he go for her. Suddenly his brother came and he has to hide.

Pretty Cool Too (2007) (http://www.imdb.com/title/tt0496373/reference)