DJI RC 2 won’t livestream without a microphone? How to fix “No built-in mic in current device”

By Taner Özel · Updated November 5, 2026

Since DJI Fly 1.16.0, the DJI RC 2, RC Pro and DJI Smart Controller do not start an RTMP livestream until a microphone is connected. Instead they show “No built-in mic in current device”. You can plug a USB-C microphone or headset into the controller, or use Stream My Drone on an Android phone as a virtual Bluetooth microphone: DJI Fly sees a microphone and starts the stream, with nothing extra to buy.

What “No built-in mic in current device” means

When you tap Start Livestream on DJI Fly’s RTMP screen with an RC 2, a box says there is no built-in mic in the current device and asks you to connect a wired microphone first. Pilots on the DJI forum report the same result: tapping OK only returns to the RTMP address and stream key fields. It started with DJI Fly 1.16.0; earlier versions streamed video without audio. The DJI Fly livestream guide confirms that a microphone must be connected from that version on.

Whatever microphone you use, the RC 2 livestreams at up to 720p. That limit is separate from the microphone prompt.

Why DJI Fly requires a microphone for livestreaming

DJI support explained the change on the DJI forum in March 2025: an RTMP stream without an audio track gives the player fewer timing references, which can add delay and hurt audio/video sync. So from DJI Fly 1.16.0, a controller without a built-in microphone needs one connected, and the stream always carries an audio track.

An earlier forum report from 2024 points the same way: an RC 2 stream without a microphone caused timecode errors on streaming platforms, and they disappeared once a USB-C microphone was connected. The requirement is about the audio track, not about whether you want to talk.

See it on your phoneFrom the DJI Fly connection to a broadcast on several platforms, all on one screen.

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Ways to clear the microphone prompt

If you already receive the drone stream on a phone with Stream My Drone, the last option uses the phone that is in your hand anyway, and the controller’s USB-C port stays free.

Fix it with a virtual Bluetooth microphone (Android)

1. Install Stream My Drone on an Android phoneGet it from Google Play (Android 9 or newer; the virtual microphone needs app version 1.2 or newer). The same phone receives the DJI Fly stream and sends it to your platforms.
2. Pair the phone with the RC 2 onceTurn on Bluetooth on the RC 2 and on the phone, then pair them from the phone’s Bluetooth settings. On the RC 2 we tested, the controller showed up as QCOM-BTD.
3. Connect from Stream My DroneIn the app, open ••• → Virtual Bluetooth Microphone, allow Nearby devices, choose the RC 2 and tap Connect to RC 2. Once connected, a microphone chip appears on the main screen. The connection stays open until you tap Disconnect.
4. Start the stream in DJI FlyConnect the RC 2 to the phone’s hotspot or the same Wi-Fi. In DJI Fly, open GO FLY → ••• → Transmission → Live Streaming Platforms → RTMP, enter the address shown in Stream My Drone and tap Start Livestream. The microphone prompt no longer appears. Menu details: DJI Fly RTMP setup.
5. Check the picture and go liveThe drone picture appears in Stream My Drone. Choose your platforms and go live; YouTube connects with one tap. The YouTube guide covers the platform side.

Watch the 1-minute setup

Tested with a DJI RC 2 and a Samsung Galaxy S23 in October and November 2026. DJI can change this check in a later DJI Fly version; if the prompt returns after an update, reconnect from Stream My Drone before starting the stream.

Will the broadcast have sound?

The virtual microphone only satisfies DJI Fly’s check. It carries no sound, so the controller sends silence. To talk to viewers, tap the microphone button next to Go live in Stream My Drone: the phone’s own microphone replaces DJI Fly’s audio on every platform until you turn it off. Leave it off for a silent stream.

iPhone, RC Pro and other setups

• iPhone: iOS does not let an app present the iPhone as a Bluetooth microphone to another device, so the virtual microphone is Android only. With an iPhone, plug a USB-C microphone into the RC 2 and use Stream My Drone for iPhone to receive and forward the stream.
• DJI RC Pro and Smart Controller: they show the same prompt, but we have not tested the virtual microphone with them. A USB-C microphone is the safe choice there.
• RC-N2 and RC-N3: DJI Fly runs on a phone that has its own microphone, so this prompt is not the problem. Keep DJI Fly on that phone and receive the stream on a second phone or a computer.
• No second phone: stream straight from DJI Fly to the platform with a USB-C microphone on the RC 2.

Troubleshooting

• The RC 2 is not in the list: pair it first in the phone’s Bluetooth settings. The app only lists paired devices; it does not scan.
• The prompt still appears: wait until the app shows the connection as connected, then leave and reopen DJI Fly’s RTMP screen before tapping Start Livestream.
• “Livestream error” after a few seconds: this is a different problem from the microphone prompt. Check that the RC 2 and the phone are on the same network and that the RTMP address matches the one in the app.
• The connection drops: the app keeps it open in the background with a notification. If Bluetooth was turned off, connect again from the app.
• Picture in the app, nothing on the platform: the local stream works. Check the platform connection or stream key in Stream My Drone.

Sources

Microphone requirement and RC 2 720p limit: DJI Fly App Livestream Operation Guides. No microphone in the RC 2: DJI RC 2 FAQ. User reports and DJI’s explanation on the DJI forum: Not allowing me to livestream without a connected mic and RC2 controller corrupt rtmp streaming without microphone. Checked on November 5, 2026.

Related guides: DJI Fly RTMP setup and streaming to several platforms at once.

Questions

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