Why won't the video play on my phone?

just have a free try this Aiseesoft Sony Ericsson Video Converter. i think it can bring you much convenience, for this software can convert all general videos and HD video to Sony Ericsson video. you'd better google it and have a free try first. hope my info can really help you.

May be your video is recorded not good in Mp4 format. And you can recode this video - decode and then to record rightly again. From Mp4 to Mp4. Use program for decoding and for converting. I use Mediabuddy.

yo might have to go to the cell phone company that you have your phone with and let them check it out and after that it should be fine

try lowering the resolution of the video. I went through the same problem before but with a different device.

firstly, you should have a check whether you sony Ericson supports such converted MP4. if it does and you want to change the resolution, i can tell you how to do it. ways to change resolution: 1, lower the video quality, it is not the best way and is suit for HD to general video only. 2, set video and audio resolution. i use Tipard Video Converter can it has many option in Settings, click in and you can achieve hanging resolution by make the numbers for video Biterates and AUDIO biterates smaller. this video converter can convert all popular video and supports nearly all portable devices. this newly upgraded video converter can also convert video with 6 faster speed. hope it can help you. Good Luck.