Three practical smartphone setups with Moblin, Moblink, external RTMP cameras, SRTLA, OBS, plus audible chat and alerts.
A stream phone can bring camera, audio, external RTMP sources, and several internet connections together in one mobile setup. In the examples shown here, an iPhone with Moblin processes the finished stream. Other smartphones add connections through Moblink or take over Streamer Hub, chat TTS, and alerts.
The three setups are not rigid shopping lists. They show how you can sensibly split up the devices you already have, from a simple smartphone setup to a motorcycle stream with two action cams.
| Device | Job | Key point |
|---|---|---|
| Central iPhone with Moblin | Camera, external RTMP sources, video processing, bonding, and the finished stream | Watch temperature, power supply, and app stability |
| Second iPhone with Moblin | Provides an extra connection through the built-in Moblink feature | On iOS, Moblink doesn't need a separate app |
| OnePlus 13 | Moblink, Streamer Hub, chat TTS, and alerts | Send audio deliberately to a headset or speaker |
| Another Android phone | Extra Moblink connection | Use an independent cellular plan if you can |
| GL.iNet Mudi 7 | Shared Wi-Fi for the devices involved | The router is the connection point, but no substitute for independent uplinks |
Keep in mind: The fewer side jobs the central device has, the easier it stays cool and stable. That's why chat TTS, Streamer Hub, and alerts run on a companion device in the setups shown.
In all three setups, a central iPhone with Moblin sits in the middle. What differs is where the picture comes from and which devices help out.
| Setup | Picture source | Companion devices | Special feature |
|---|---|---|---|
| External cameras | The drone supplies the main picture, a DJI Action Cam or DJI Pocket 3 a second perspective | GL.iNet Mudi 7, OnePlus 13 | Several RTMP sources, also as picture-in-picture |
| Motorcycle stream | Two DJI Action 4 (helmet, face cam, or rear view) | GL.iNet Mudi 7, OnePlus 13, Samsung Galaxy S23 Ultra | Safety comes first, plus helmet TTS |
| Pure smartphone setup | iPhone on the gimbal | GL.iNet Mudi 7, OnePlus 13, Samsung Galaxy S23 Ultra, DJI Mic 3 | No separate camera |
In this setup, the iPhone with Moblin takes in several external RTMP sources. A drone can supply the main picture, while a DJI Action Cam or DJI Pocket 3 serves as another perspective or picture-in-picture source. The GL.iNet Mudi 7 connects all the devices in one shared Wi-Fi network. The OnePlus 13 adds Moblink plus Streamer Hub with chat TTS and alerts.
In the motorcycle setup, a DJI Action 4 on the helmet supplies the riding perspective. Depending on the mount, a second Action 4 can serve as a face cam or a rear view. Both cameras send separately to Moblin over RTMP. The GL.iNet Mudi 7 provides the shared Wi-Fi. The OnePlus 13 handles Moblink, Streamer Hub, chat TTS, and alerts, and a Samsung Galaxy S23 Ultra adds a second Moblink path.
This setup needs no separate camera: the iPhone on the gimbal films and processes the stream in Moblin. The OnePlus 13 and Samsung Galaxy S23 Ultra take on extra jobs and provide Moblink connections. The GL.iNet Mudi 7 connects the devices over a shared Wi-Fi network, and the DJI Mic 3 supplies the audio.
Moblink gives the central Moblin device extra network paths from other smartphones. That can make the mobile uplink more robust, as long as the paths are really independent of each other.
On a second iPhone, the Moblink feature is already built into Moblin. That iPhone can therefore act as an extra connection provider for the central Moblin device, and you don't have to install a separate Moblink app on iOS. In Moblin, you turn on the Moblink feature on the second device and connect it to the central streaming iPhone.
Several plans are no guarantee of stability. If all the devices use the same congested cell or the same router uplink, that shared weak point stays.
The three videos show the setups in real use: external cameras, a motorcycle stream, and a pure smartphone stream with a gimbal at IFA Berlin. They complement the diagrams but don't replace a full test with your own devices, cellular plans, and current app versions.
Written alternative to the three videos: The setups with external cameras, for the motorcycle stream, and as a pure smartphone setup are described on this page.
A smartphone setup only becomes practical for everyday use once every device reaches the planned runtime and can shed its heat. Camera, display, video encoding, cellular, Wi-Fi, Bluetooth, and charging all create load at the same time.
In the Moblin setup shown here, the iPhone takes in its own camera and external RTMP sources, processes picture and audio, and sends the finished mobile stream to the server over SRTLA.
A second iPhone can use the Moblink feature built into Moblin and provide an extra internet path. You don't need a separate Moblink app on iOS. Alternatively, a companion device can combine Moblink with Streamer Hub, chat TTS, and alerts.
In the practical setups shown, compatible cameras and drones can send to Moblin over RTMP. Test the complete setup before you go out.
No. Extra smartphones provide more connections or companion functions. For SRTLA, OBS production, and controlled forwarding, you still need a suitable receiver or server.
One is enough: the central device. In the simplest case, the smartphone films and processes the stream itself. Additional devices are optional. They're worth it if you need extra internet paths through Moblink. Or if you move chat TTS, alerts, and Streamer Hub to a companion device so the central one has less to do.
Apple and iPhone are trademarks of Apple Inc. DJI, OnePlus, Samsung, GL.iNet, and other product names are trademarks of their respective owners. IRL4YOU is not affiliated with these companies.