Amazon Fire Phone doesn’t have the capability to play WMV videos. It only supports MPEG4, VP8, H.264/MPEG4/AVC, MPEG4 SP, H.263, AVI, HDCP2.x, PlayReady DRM video format. This is why you need to convert WMV to MP4 format for watching WMV movies on Fire Phone. Here I will give you some clues how to enable WMV files playable on Amazon Fire Phone in the simplest way.
To conduct the conversion from WMV to Fire Phone acceptable format, you can have a try on Brorsoft Video Converter which is an outstanding video converter compatible with Windows system (Windows 8 included).
It is an excellent video converter which contains no limitations on video conversion as well as video editing. It can help you convert not only WMV format to Amazon Fire Phone but also transfer between almost all video formats including MKV, AVI, FLV, MPG, VOB… With a built-in editor, you can change the video effects to gain better visual experience on Fire Phone. The supported editing functions are as follow: trim, crop, add watermark and subtitle, adjust the effects, etc.
If you want to accomplish the conversion from WMV to Fire Phone on Mac OS X (Mavericks), just have a try on Brorsoft Video Converter for Mac which embraces the same function as the Windows version to convert video format. This software is safe to download and install in computer. Go ahead and follow the tutorial below to start the conversion.
How to play WMV files on Amazon Fire Phone with ease
1. Load WMV video files
Run the best WMV to Fire Phone Converter. Click File button to load WMV video files from your computer or devices. You can also directly drag the video files into the program. For batch conversion is supported, you can add multiple files at a time
2. Designate output format
To convert WMV to Fire Phone, you should choose a proper format. Open the drop-down list of profile and select “Common Video” ＞“H.264 Video(*.mp4)”. You may also select “Android -> Amazon Kindle Fire HD H.264 video (*.mp4 )” as target format. It could fit on Fire Phone perfectly. 
Tips:
a. Tap the “setting “button, you are allowed to change the video resolution, bitrate, audio channel, etc.
b. You can edit the video by right click to the video to open the video editing window and make adjustment to the video as you like.
3. Start converting WMV to Fire Phone
When all the settings are done, click Convert button to start encoding WMV to MP4 for Amazon Fire Phone. After the short conversion, just transfer the output videos into your Fire Phone to enjoy the movies right away!
Related Guides:
Video player apps for Amazon Kindle Fire HDX for smooth movie playback