BATTERIA PER TELEFONO CELLULARE.

摘要

A battery pack (10) for use with a mobile phone having a body (20) and an internal phone circuit, said battery pack (10) comprising a body having a rear side facing the body (20) of the mobile phone when the battery pack (10) is attached. The battery pack body is provided with at least two sim card slots (11 and 12) on the rear side for receiving respective sim cards (30A and 30B) and the battery pack (10) incorporates a control circuit (40) for selectively enabling electrical connection of sim cards (30A and 30B) received in the respective slots (11 and 12) to the phone circuit of the mobile phone upon the mobile phone being switched on.