First, check the appearance quality of the product. For example, the genuine shell material should be strong and not easily damaged, and the outer surface of the power supply should be uniform in color, clean, and free of scratches and mechanical damage.

The second is to check the mobile phone network access sign. According to national management regulations, mobile phones must obtain the network access mark before they can be sold. The network access logo is usually affixed to the back of the phone, which can be seen after the battery is removed. Under purple light, there will be a "CMII" logo that is larger than the original words. You can also directly enter the network access license number (the first line of the network access permission mark), the scrambling code (the third line of the network access permission mark) and the mobile phone number (the dialable number "＊#06#") posted on the mobile phone. ” Obtain) Enter it one by one, and this website will tell you the authenticity of your phone.

The third is to check the mobile phone packaging. The package should contain the product name, factory name, factory address, contact number, production date, instructions, list of accessories, implementation standard code, serial number, network access certificate number, corporate standard (trademark), model, specification logo and laser anti-counterfeiting mark, fuselage Corresponding barcode to the packaging, etc. Mobile phones produced overseas should have Chinese origin, agent name, network access certificate number, instructions, accessory list, warranty certificate, etc.

The fourth is to check the IEMI code of the mobile phone. For GSM digital mobile phones, just press "＊#06#" in sequence to display the phone's IEMI code on the phone screen (which can be seen after removing the battery), which is consistent with the IEMI code on the packaging box and the IEMI code on the warranty card.