Hello, we have summarized some knowledge about second-hand mobile phone fraud prevention for reference only:

1. Remind you not to trust any escrow service to buy or sell items or remit money in advance. For information, transactions must be conducted in person, and it is best to be accompanied by knowledgeable friends.

2. Before buying a mobile phone, it is best to check the price of the mobile phone in the local newspaper or website. If the price quoted is very cheap, be wary. Such a "cheap" mobile phone is not Refurbished mobile phones and products from informal channels are simply missing accessories.

3. Pay attention to whether the battery and charger are fully equipped, and whether they have the manufacturer's logo and anti-counterfeiting trademark.