5. The temperature is too high or too low, which will affect the battery charging.
It needs to be cooled or heated before charging the battery.
6. The battery level is indicated in the upper right corner of the screen. When
the indicator icon is displayed as one grid, it means that the battery power is
very low, and the screen will prompt "insufficient power, please timely charge".
At this time, please save the existing work as soon as possible and timely
charge.
7. When the indicator icon shows zero grid, the power of this product is
seriously insufficient, and the screen will prompt "insufficient power, please
charge in time", and then automatically shut down.
Frequently asked questions
1. In the process of mobile wireless communication, please follow the
following steps to troubleshoot the failure of data transmission:
1) check whether the signal icon of mobile wireless communication in the
upper left corner of the screen has a signal. If there is no signal icon of mobile
wireless communication, the SIM card may not be properly installed. Please
remove the SIM card and reinstall it to ensure the normal operation of the SIM
card; If the signal is below two bars, please send the data to a place where the
signal is good. If the signal is normal and the data fails to be sent, please refer
to the next step.
2) please confirm with the network operator (mobile, telecom or unicom)
whether the SIM card of this machine is overdue. If the balance of SIM card is
insufficient, please recharge the SIM card as soon as possible;
3) if the problem is still unresolved, please shut down and restart the product.
All the above methods fail, please contact our after-sales service center.
2. Treatment method for failure to start the product when charging
This is due to the excessive use of electricity caused by the battery, the battery
charge after a period of time can be turned on normally.
3. Insensitive scanning method
First, check whether the bar code is flat, clear and tidy. If the barcode is
damaged, please exit the scanning state and directly conduct manual
