1, 5A data line allows more current to pass through per unit time, so 5A charging speed is faster than 3A data line under the same voltage;
2, 3A data cable can charge mobile phones that support 3a and below, can not charge mobile phones that support more than 3a, 5A data cable can charge mobile phones that support 5a and below, can not charge more than 5a;
3, the price of 5A data line is generally higher than the price of 3A data line.
The 5A can support 25W charging, and the 3A supports 15W