Your iPhone already comes with everything you need to capture amazing videos. Relying on your camera’s internal microphone is rarely a good idea. The Mackie EM-93M Microphone is a compact external microphone for smartphones and DSLRs. This condenser microphone has a shockmount to reduce handling noise. It also has windscreens for outdoor audio.
The EM-93M is compatible with DSLR cameras too. Its furry and sponge foam windscreens let you capture audio with reduced wind or indoor noise respectively. This microphone is currently available on pre-order. You can find out more about it on Mackie’s website.