Back is vibrating while charging

[Aithir]

Got my Xperia XZ yesterday. Total first time charging and the back is vibrating when ich touch it. This is very strange and ich dont think its normal....

[Chris314159]

Also doesn't explain how it will discharge from 64% to 12% within 7 hours overnight and no updates were installed . WIFI was turned off

[Uliwooly]

@Chrisallroadbiturbo

could you elaborate, it shouldn't be vibrating

[_alexdon_]

@Chrisallroadbiturbo Please read this thread I merged your post into.

[pisquare]

İ have my Xperia XZ about 1 month. When my phone is charging i feel like it's vibrating from back but very slight. Feels like electricity. And when my phone is % 97, estimated time was 13 hours, when stamina mode is on; estimated time is 15 hours. İs there anyone to help me or face same problem ?!