sony-xqz-iv01/spike

XQZ Enabler

A minimal Android app that enables the Sony XQZ-IV01 Vlog Monitor by sending the vendor heartbeat, then lets the phone's built-in secondary-display mirroring show the screen on it. No MediaProjection, Sony code, or audio routing.

Confirmed on a Galaxy S23 (One UI, DeX auto-start off): the monitor mirrors the Samsung Camera app, scaled/letterboxed to 1280×720.

Features

• Requests USB permission for the monitor's control device (054c:0e48).
• Claims its vendor interface and sends show every 400 ms from a foreground service (the DP sink disappears after 1 s without it).
• Auto-reconnects when the monitor is replugged while the service is running.
• Quick Settings tile: add “XQZ monitor” for one-tap start/stop.
• Notification with a Stop action; 4-hour partial wake lock.
• Sends stop on teardown; logs flip/ACKs to logcat (XQZEnabler).

Not included: audio input, FLIP handling, MediaProjection, or DeX control.

Install

XQZEnabler.apk is release-signed (version 1.0). If you already installed the earlier 0.1 spike, uninstall it first — the signing key changed.

adb install -r XQZEnabler.apk

Or transfer the APK to the phone. If Samsung Auto Blocker blocks it, allow installs for the file manager or temporarily disable Auto Blocker.

Use

1. On the S23, turn off DeX auto-start: Settings → Connected devices → Samsung DeX → “Auto start when HDMI is connected” = off.
2. Turn the monitor's screen switch ON, then connect the XQZ-IV01 to the phone with its USB-C cable.
3. Open XQZ Enabler, tap Start, allow USB access.
4. Open the Samsung Camera app. The monitor should show a scaled/letterboxed mirror of the phone screen.
5. Optional: add the XQZ monitor Quick Settings tile for one-tap toggling.

If DeX starts instead of mirroring, switch to Screen mirroring from the notification, or turn off DeX auto-start and reconnect.

Troubleshooting

• Black camera preview only: the camera app is using a secure window. The next step would be a MediaProjection mirror or a custom Camera2 preview.
• No display: check that show is running (app status / notification) and that the monitor's screen switch is on.
• Monitor replugged but not enabled: if Android dropped the USB permission, open XQZ Enabler and tap Start to grant it again.

Build

Requires Android SDK platform 35 and build-tools 35.0.0 at $ANDROID_HOME (default ~/Android/Sdk):

./build.sh

The APK is written to ./XQZEnabler.apk.

Signing: release.keystore is local and gitignored. The committed APK is signed with it. Keep that file to sign future updates that install over this build; if it is missing, build.sh generates a new key and the resulting APK will not update over the committed one.

Source layout:

• src/ee/wut/xqz/enabler/MainActivity.java — UI, USB permission, start/stop.
• src/ee/wut/xqz/enabler/HeartbeatService.java — USB claim, 400 ms show, reconnect handling, notification/wake lock.
• src/ee/wut/xqz/enabler/MonitorTileService.java — Quick Settings tile.