Precautions:
1. Buy second-hand mobile phones from regular channels. Because these places have formal purchase procedures,buy second hand phone ， there will be no associated troubles.
2. Choose a second-hand mobile phone from a well-known brand. It is undeniable that the probability of problems with second-hand mobile phones is much higher than that of new mobile phones. Once the mobile phone needs to be repaired in the future, the accessories are easy to buy, easy to maintain, and the price is transparent. It will also be easier to do it later.
3. When you get a real mobile phone, you must first experience it carefully. Try to try all the functions of the mobile phone, test the sensitivity of the buttons and touch screen of the mobile phone, and feel whether it is easy to use.
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Can I buy a used mobile phone? what to watch out for