1.Check the mandatory certification mark and product identification.

Mobile phones are products within the scope of the national CCC mandatory catalogue, and must pass the national mandatory product certification, and attach the CCC certification mark. Consumers must confirm whether there is a CCC certification mark at the time of purchase, and through the China National Certification and Accreditation Administration website.

2.Check the quality of the power adapter.

Visual power adapter pin, joint processing should be fine, smooth and no rust, it should be noted that the power adapter on the power plug should conform to our national plug style, should be wafer type pin, pin should not be round holes, should not be cylindrical, square column and other non-wafer form.

The surface of the plastic part of the power adapter shell is smooth and smooth without burrs and uniform color. The joint of the shell should be tight and there should be no gap when pressed. The weight of the power adapter itself should not be too light, and the knocking should not have the feeling of emptiness.

Check whether the nameplate of the power adapter is in simplified Chinese and contains the rated voltage or rated voltage range, the symbol of the nature of the power supply, the rated frequency or rated frequency range, the rated current, the manufacturer's name or trademark, the model, and safety instructions, and the handwriting is clear and not easy to erase. There should be adequate safety warning information on the nameplate (Class II equipment with double insulation or reinforced insulation should be marked).