The metal camera is charged when the iQoneo 7 mobile phone is charged.

If it refers to the leakage of the charger, at present, the chargers in the domestic electronic industry generally use two pins, and there is no grounding device, so there will be inherent leakage current when charging. Due to the difference of human impedance, different people have different perceptions of leakage current. Some people can feel it, while others can't. The leakage current of the official standard charger meets the safety limit of 0.25mA (mA) required by national regulations, and is actually far less than this limit. There is no security risk, please feel free to use it.

If you are still worried, it is recommended to take the charger to the vivo customer service center for testing.