Apple’s iPhone offers quite excellent video watching experience with its high-quality screen display and audio output. Though iPhone is quite popular, iPhone users may occasionally have encountered video formats incompatibility problem when trying to watch some movies downloaded from some websites, or transferred from other devices to iPhone. Nowadays, iPhone 11 and its brothers have been released. However, you may have found that there are still many movies not accepted by iPhone 11 and its brothers such as AVI, FLV, MTS, VOB, MKV, etc. Under such circumstance, converting video in unsupported formats to iPhone compatible video files would be of great importance. Fortunately, there are so many powerful tools available for you convert videos to iPhone on Mac and Windows PC. This post will guide you to convert movies and various videos to iPhone and watch movies freely on iPhone.