Question :

When touching the casing surface, When you touch the casing surface, I feel electricity(fine current/fine vibration) seems to flow.

Answer :

The phenomenon is not caused by leakage current but by micro-vibration.

For metal(aluminum) products (mobile phones, PCs, tablets), the surface of the case is insulated by coating(oxidizing) for user convenience and product protection, so there is no current on the surface of the product.

However, in products with coated (oxidized) cases, micro-vibration (shaking) can occur during contact with the human body depending on the environment of use, which can be mistaken or offended as if it is electrocuted.

This is not a product defect, it is a common feature that can be felt by some sensitive users while charging the device with metal cases.

But it is harmless to the human body.

This is harmless to body but if you feel inconvenience due to this micro-vibration, it�s recommended to use grounding chargers on sale at the Samsung Service Center.