"I get good vibes from people all the time, and I probably could get along with them and be their friend, but now I just don't trust anybody," Bieber told Teen Vogue magazine, reports contactmusic.com
"Literally, my phone never rings. I only have ... four people that I keep in contact with," he said.
"I don't need a bunch of friends to make me happy. I just need the people close to me that I love, that's all," he added.
The 19-year-old has attracted a lot of criticism recently for a string of incidents including showing up late for a concert.
Despite all the problems, Bieber believes his fans still support him.
"My Twitter is really nice. I have so many fans that I rarely ever see a nasty tweet. I see so much stuff on the Internet, sometimes I just want to go to Twitter and just go after people," he said.