Maintenance and warning
1. Don't squeeze or twist or tap the keyboard.
2. Don't perform microwave scanning, keep away from the magnetic field.
3. Keep away from liquids and use in a relatively dry environment.
4. Clean the keyboard with a soft cloth, and turn off the power if it
is not used for a long time.
Common connection troubleshooting
1. Make sure that the power is turned on and the battery is fully charged.
2. Ensure that the keyboard is within the working distance.
3. Make sure that the Bluetooth-related functions of the device are
turned on.
4. Make sure that the keyboard and the device are paired and connected.
5. Clear the device pairing record, turn off the Bluetooth function,
restart the device, and pair again.
