Historial para "Randomly turns off after a short usage"

Hello,

Ive got a iPhone 6S Plus that for the first time randomly shut off.

Hard reset did not work at all, the only solution to this was to unplugg the battery and plugg it back in again.

Then the phone started, but only for half a day.

Ive replaced the battery and it’s still the same thing,

Anyone got any solution to this?

Dispositivo:

iPhone 6s Plus

Estatus:

open