specific steps are as follows
1. See the charging head as shown in the following figure (you can see the capacity of the battery to see whether it supports large capacity).
2. The charging head output data is (5V, 2A for fast charge), (5V, 3A for super fast charge), the higher the current, the faster the charging speed, as shown below.
3. See that the data line has a 5A mark, as shown in the figure below. This mark means that fast charge is supported.
4. There is purple material on the data line, as shown in the figure below. This material needs to be distinguished from other materials to distinguish the difference between this material.
5. Use the charger to charge the phone, as shown in the picture below.
6. HUAWEI supercharge is displayed (indicating that the phone supports fast charge).
Communication standard YD\/T 1591 \"Mobile phone Charger and interface technical requirements and test methods\" clearly stipulates that the DC input voltage of the charging interface of the mobile phone is 5V±5%, and the maximum absorbed current is 1800mA. So as long as the output of the adapter breaks through this condition, it can be regarded as fast charging.\"
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By actually recording the phone charging time. According to my own experience, if you start charging when the power is 0~10%, after half an hour or so, the phone's power can be basically restored to about 60%, and you can basically judge that your smartphone has fast charging ability.