Rode Microphones SmartLav+ Lavalier Microphone for Smartphones
Amazon.com: Rode iXY Recording Microphone for iPhone/iPad : Musical Instruments
Amazon.com: 3.5mm TRS to TRRS Microphone Cable, Ancable 1/8 Male to Male Coiled Right Angle Mic Cord Compatible iPhone, Smartphone, Tablets with Rode SC7, VideoMic, VideoMicro Go, BOYA and More External Mic :