Because the voltage doesn't match. What to do when charging leakage:
1, some people in the mobile phone charging, pick up the mobile phone can obviously feel a slight current, this is the charging leakage.
2, in the case of leakage during charging, mostly because of the use of fake and shoddy charging plugs, resulting in unstable current output, and fake and shoddy products are very poor workmanship, it is likely that the insulation layer is not qualified materials, so it will lead to current leakage.
3, another possibility is that because the mobile phone frame and other parts are not tight when engaging, resulting in the leakage of a certain part, so that when the human body touches, a conductor is formed, resulting in leakage.
4, when the leakage phenomenon is found during charging, it is recommended to replace the charging plug or check whether the mobile phone performance is damaged.