M30U Won’t Power Off
Published at: 2026-05-22
Power button and shutdown operation check
Potential Causes
- The Power button was short-pressed instead of long-pressed.
- The Power button may be stuck.
- Dust, gel, or debris may be trapped around the button.
Troubleshooting Steps
- Long-press the Power button
To power off the device, press and hold the Power button for about 1–2 seconds. - Avoid only short-pressing the button
A short press may switch mode or status instead of shutting down the device. - Check whether the button feels stuck
Make sure the button can be pressed normally. - Clean around the button if needed
If dust, gel, or debris is trapped around the button, gently clean the area with a dry cloth or cotton swab.
Details
If the M30U still cannot be powered off normally after checking the button and operation method, please prepare your order number, purchase platform, a short video showing the issue, and your device SN code / Serial Number, then fill out the form.
Where to find the SN code:
For the JMOON by Ulike NouvelleSkin M30U, the SN code is located at the bottom of the device, below the charging port.
For the JMOON by Ulike NouvelleSkin M30U, the SN code is located at the bottom of the device, below the charging port.
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