Which devices can an advertiser target with a mobile video masthead?
- Android only
- Both mobile and tablets
- Mobile only
- Tablets only
Similar to the desktop video Masthead, the mobile video Masthead is a native video-based ad format that only requires a YouTube video to create, and appears on the YouTube homepage on mobile and tablet devices. This includes Android and iOS mobile apps as well as m.youtube.com for smartphone and tablets. Mastheads are bought on a cost-per-day basis and appear on the YouTube homepage for a full day (generally 12:00 AM to 11:59 PM, but varies by country).
Read more here: https://support.google.com/displayspecs/answer/6244544