Back Cover Opened
1 Power switch: Turn the switch to the left, power on the device;
Turn the switch to the right, power off the device.
2 Micro USB socket：Connect Micro USB configure cable to PC, initialize parameters or
debug purpose and Firmware upgrade.
3 SIM1 slot：Push the SIM card holder down vertically to open it, and then put the Micro-
SIM card 1 inside, Press down then push the SIM card holder up vertically to
lock the SIM card
4 SIM2 slot：Push the SIM card holder down vertically to open it, and then put the Micro-
SIM card 2 inside, Press downthen push the SIM card holder up vertically to
lock the SIM card
5 Light sensor：it’s used to detect whether Back Cover opened or not.
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