Network access permission sign
On the back of regular mobile phones, there is a sign of "network access permission" from the Ministry of Information Industry, while parallel mobile phones do not.
Laser anti-counterfeiting mark
The configuration of regular mobile phones, including batteries and chargers, is affixed with the original laser anti-counterfeiting mark, while parallel mobile phones generally do not have such a mark.
Warranty and maintenance services
You need to personally confirm whether the warranty of the dealer is consistent with the warranty of the manufacturer. Parallel mobile phones cannot enjoy the warranty and maintenance services provided by the original factory or in line with the original technical standards.
Exquisite appearance
In appearance, the regular mobile phone is more exquisite and the keyboard is smooth; Most parallel mobile phones have rough appearance, turbid color and worn keyboards.
price variance
See if the price difference is too outrageous. If it is too far away from the market, it is necessary to doubt whether it is parallel imports.