Twitter is rolling out two new targeting features for mobile advertisers to get even more specific about the people they reach.

The new features allow advertisers to target based on the users’ mobile carrier and whether they’re using a new device. Mobile carriers will now be able to exclude people who already subscribe to their service when creating advertising campaigns directed at new customers. Of course, the technology can also be used to reach existing customers as well.

New device targeting, on the other hand, is aimed at refining mobile app download promotions. The premise is simple: People with new mobile phones may be interested in downloading new apps. Twitter determines a phone’s newness by how recently a person started using Twitter on that specific device.

Twitter carrier targeting

Twitter has been expanding its mobile advertising platform all year. Just last week the company unveiled a new feature that lets advertisers target customers based on the apps already downloaded on their phones.