Kanye West doesn't have a mobile phone

Kanye West doesn't own a mobile phone, according to Justin Bieber.

Justin told MTV: 'It's funny, because he doesn't even use a phone, he just sends emails.

'It's so crazy. I'm like 'how can you not use a phone?'

The two worked on a remix of of Justin's 'Runaway Love'. 'I'm really excited,' Justin said about the collaboration. 'It was amazing. He's such a cool guy, and he's just really laid back and just nice, and at the end of the day, he's just a nice person.'