Target by device models, OS versions, carriers, and platforms
To set up device specific targeting, navigate to the "Targeting" > "Demographics" section in the campaign creation flow. Click into the search bar to expand the menu, and click "Browse" to select which devices, platforms, and carriers you want to target.
Twitter also offers the ability to target by the mobile carrier associated with their profile. This is a great tool for mobile carrier advertisers who want to target or exclude their existing customers from their campaigns on Twitter.