1. Drops must be made on anti-static pads and attention must be paid to not touching other hard objects when falling.<br>2. Note that the back is facing down, raise the machine to a height of 15CM, release your fingers, and let it fall naturally, without force. <br>3. The falling machine needs to be carried out on.<br>4. 2G/4G models need to plug in the SIM card before they can be powered on.
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