Troubleshooting the customer display
If the customer screen is blank, shows the wrong thing, or isn’t updating with the order, it’s almost always a detection or settings issue rather than a fault. Work through these checks in order.
Step by step
- Confirm the display is turned onOpen Customer display settings and check the Second (customer) display toggle is on. The status line should read “A secondary display is connected.”
- Rescan for the screenTap the ⟳ rescan button in the top bar. For an external monitor, reseat the HDMI cable and make sure the monitor is powered and on the right input.
- Check you picked the right screenIf the device lists more than one external screen, make sure the customer-facing one is selected (or set it to Auto).
- Use Test on screenTap Test on screen. If the sample order appears, detection is fine — open the POS and add a product to see the live order.
- If the order isn’t updatingThe live order only shows while the POS screen is open. If the screen shows idle media, open the POS and start a sale. Leaving the POS returns the display to idle by design.
- If media won’t playFor a device video, re-pick the file in settings (permission can be lost after a system update). For YouTube, confirm the device has a working connection and the link is valid.
Frequently asked questions
My customer display is blank — how do I fix it?
Open Customer display settings, confirm the toggle is on, and tap the ⟳ rescan button. For an external monitor, reseat the HDMI cable and check it’s powered. Then tap “Test on screen” to confirm detection.
The second screen shows video but not the order.
The live order only appears while the POS screen is open. Open the POS and add a product; if you leave the POS, the display returns to its idle media by design.
It says no secondary display is detected.
Tap rescan. Make sure the Sunmi vice screen is powered, or that an external monitor’s HDMI cable is seated and the monitor is on. Some monitors need to be connected before the app starts.
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