MKV to iPhone 4 - Play MKV on iPhone with MKV to iPhone 4 Converter
MKV, short for Matroska Video, is a multimedia container, which is not accepted by iPhone 4. If you want your MKV files to-go, uploading MKV to iTunes and putting MKV on iPhone 4 is a nice way. Using 4Videosoft iPhone Video Converter can help you easily convert MKV file to MP4 for your iPhone 4 with fast speed and excellent quality. Now, let's have a try. Note, if you are a Mac user, please go to how to convert MKV to iPhone 4 on Mac OS.
Step 1 Download 4Videosoft iPhone Video Converter, install and run it. Download Link.

Step 2 Import MKV files to the program by clicking "Add File"
Step 3 Set the output format(MP4) and output destination.

Step 4 Start converting MKV to iPhone 4 at "START".
It's just that easy to convert MKV to iPhone 4. So why not download iPhone Video Converter and give it a try?