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justin95Jul 29, 2025
Why does my MAXHUB BM21 Telephone shut down automatically?
- AajacksonJul 29, 2025
If your MAXHUB Telephone is shutting down automatically, it might be due to insufficient battery. Connect the adapter to charge the device.

Why does my MAXHUB BM21 Telephone shut down automatically?
If your MAXHUB Telephone is shutting down automatically, it might be due to insufficient battery. Connect the adapter to charge the device.
What to do if my MAXHUB Telephone is not charging?
If your MAXHUB Telephone is not charging, the charging device may be faulty or the battery may be already full. Replace it with a charging device that you know functions normally.
What to do if I have invalid key on MAXHUB BM21 Telephone?
If you are experiencing an invalid key issue on your MAXHUB Telephone, it could be due to accidentally touching the key. To resolve this, long press and hold the power button for 8 seconds to reset the system.
Why is my MAXHUB BM21 unable to work with USB?
If your MAXHUB Telephone is not working with a USB cable, ensure you are using the original USB cable to make a call.
What to do if MAXHUB BM21 Telephone is unable to work with AUX?
If your MAXHUB Telephone is not working with an AUX cable, make sure you select the correct sound source input and adjust the equipment. Also, use the original AUX cable (4 sections).
Equipment safety from water, heat sources, and sunlight.
Voltage matching and electrical outlet safety.
Handling sharp objects, temperature effects, and avoiding cord damage.
Ventilation requirements for enclosed spaces.
Keeping small parts away from children to prevent danger.
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