Abstract: Mobile phone billing for content payment is described. In embodiments, a media content provider receives a billing identifier that is associated with a mobile phone. The billing identifier is received from a communication service provider that authenticates the mobile phone for communications, and a network communication link is established between the mobile phone and the media content provider via the communication service provider. The media content provider receives a request from the mobile phone to purchase and download a media asset. The media content provider determines the billing identifier that is associated with the mobile phone for the purchase of the media asset, and communicates a charge for the media asset to the communication service provider that then bills a user associated with the mobile phone. The user that is associated with the mobile phone is billed for the media asset in a mobile phone service bill.