HTC HD7 Review Jan 23, 2011 | Featured Articles, Reviews | 0 | I review the HTC HD7 on T-mobile. ; This is the only offering at this time running Windows Phone 7 on T-mobile and is the largest of the WP7 devices. Formats available: MPEG4 Video (.mp4), MP3 Audio (.mp3), MPEG-4 Video (.m4v), MPEG-4 Video (.m4v) ShareFacebookTwitterLinkedInRedditPinterest Related