... card when there is any power Connection, otherwise, it may ruin your sim card. 2 Power onSlide switch to "ON" to power ... device. For example: SOS, A,13910283465,13910283465,13910283465,13910283465# It will reply "OK" if succeeded. If only set one sos number ... information. If GPS is located in 5 minutes, the device will send accurate address information. Example of GPS address information: "vibration ...