If you are using the video player that comes with the A788T to play a video file, here we suggest that you try to put it in landscape mode by using the turn screen button on the top of the player, and at the same time click on the full screen button next to it to try to play it in full screen.
If you still can't play in full screen, the video source may be too large, exceeding the maximum resolution (1080P) supported by your own video player, here we recommend that you use a third-party application to support more codecs and optimize the use of video rendering, we personally recommend that you consider using the mx player, moboplayer, etc., and turn on the soft decoder in the settings, and then Then turn on the full-screen function of the player, more video playback software you can go to the music store/default.aspx
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