Most microphones need a TRS cable to work with the iOs system.
Apple Lightning to USB Camera Adapter
MXL 3.5MM Microphone Adapter for GoPro
On sale
RODE SC1 TRRS Extension Cable
RODE SC4 TRS to TRRS Adaptor for iPhone or iPad
RODE SC7 TRS to TRRS Patch Cable
On sale
RODE SC8 6m/20' dual-male TRS cable
Sennheiser HD280 Pro