Ask mobile phone repair, high fault

Users questions: I do not know how to automatically shut down mobile phone, also opened without power after a (Note: the battery is full) for a few moments automatic start immediately and automatically shut down, may I ask how matter Xianxie over the
Experts answer: SIM cards and Memory cards are out, and then take a look at this problem will not occur if there is, I must take it Boot time on the phone to do a master clear or master reset to see if the problem would be to take it if there is repair, and may be short circuit
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