DJI Mic 2 not connecting to iPhone: fixes

DJI Mic 2 usually fails on an iPhone for one of three reasons: the receiver is on the wrong phone adapter or isn't fully seated, the transmitters aren't linked to the receiver, or you're using direct Bluetooth with an app that doesn't accept Bluetooth microphones. The most reliable setup is the receiver plugged into the iPhone with the matching mobile phone adapter, with the transmitters showing solid green.

Two ways to connect Mic 2 to iPhone — DJI's Mic 2 manual and FAQ: over Bluetooth, the transmitter's noise reduction and internal recording are unavailable. The receiver route is the more reliable one.

Method 1: receiver plugged into the iPhone

Fit the mobile phone adapter that matches your iPhone: Lightning for older iPhones, USB-C for iPhone 15 and newer. Insert it into the receiver's expansion port, then into the phone.
Check that both transmitters show a solid green light. Blinking green means they aren't linked. Put them in the case for a moment to relink.
Look at the receiver screen: it shows an icon when a phone or computer is connected, plus live audio levels for each transmitter.
Open your recording app and record a test clip.

If it still won't work:

Remove the phone case. A thick case can stop the adapter from seating fully.
Update the firmware. DJI's January 2024 receiver and transmitter firmware (v04.03.08.31) added iPhone 15 series support, including using the receiver while the phone charges. Older firmware can misbehave on USB-C iPhones. See DJI Mic 2 firmware update.
Check the levels. If the meters move on the receiver but the recording is silent, the app is using the iPhone's built-in mic. Restart the app with the receiver already plugged in.
Try Stereo or Mono. DJI confirms Stereo works over the Lightning adapter. If one voice is missing, set the receiver's recording mode under Receiver Settings.

Method 2: transmitter straight to the iPhone over Bluetooth

You can skip the receiver and pair one transmitter to the phone:

Power on the transmitter. If its light is green, press and hold the record button for three seconds to switch to Bluetooth mode (slow blue blinking).
Press and hold the linking button for two seconds. The light blinks blue quickly.
On the iPhone, open Settings > Bluetooth and choose DJI-MIC2-XXXXXX.
A solid blue light means it's connected.

Why it may still "not work": DJI says to use third-party camera, video chat, conference or livestreaming apps for Bluetooth audio, and to make sure your camera app supports Bluetooth audio input. Whether an app records from a Bluetooth mic depends on the app and iOS. Also, over Bluetooth the transmitter can't record its internal backup or use noise reduction. If you need those, use the receiver.

Still not connecting

Restart the iPhone and the receiver.
Forget DJI-MIC2 in Bluetooth settings and pair again.
Factory-reset the receiver from Settings > Reset on its screen, then relink the transmitters in the case.
Test the receiver on another phone or computer to rule out the adapter.

If the receiver isn't detected on any device, contact DJI or start a repair. Setup from scratch is in connect DJI Mic 2 to iPhone, and if the receiver connects but you hear nothing, see Mic 2 no sound. Need a new kit? See the DJI Mic 2.