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operation.
3. Do not remove the battery during charging.
4. Fill the unit for at least 4 hours before first use. This can
increase the efficiency of the multiple charge and discharge
cycles.
4.6. Maintaining the battery
The device has a rechargeable battery. When not using the
charger, disconnect it from the power source. For more than a
week, do not leave the phone charging. Temperature influences
battery capacity. Battery may need to be cooled or warmed up
before charging. If the battery temperature is lower than 0 °C or
higher than 45 °C, do not charge the battery. Use the battery
according to its intended purpose. Do not short-circuit the
battery terminals. Do not use a damaged battery. If you are using
an appliance under extreme temperature conditions, the battery
will not work properly and its life span will be reduced. DO NOT
throw the battery into fire, follow local laws and regulations
regarding the disposal of the spent battery.
5. Power On/Off
Press and hold the End / On-Off button to turn the unit on or off.
1. If a SIM card is not inserted, it is defective or not fit correctly, a
warning message will be displayed after switching on the display.
Turn off your device and make sure the SIM card is inserted
correctly.
2. If you insert the SIM card into the device, the PIN request and
the phone password are active, the device prompts you for the
password and PIN code and switches to standby mode.
After switching on, the phone automatically searches for the
network. If the device has found the allowed network, it will
display its name and signal strength.
If your device does not find a suitable network, you can only
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