1. Turn the little genius watch to the back, align the protruding position of the card reader with the groove of the SIM card cover, and gently apply force clockwise. Don't use too much force when taking the SIM card and card cover, so as not to damage the chip.

2. Take out the SIM card and close the computer cover. Little genius phone watch is a children's smart watch, specially designed for children aged 5- 12, which integrates the functions of making phone calls, locating, chatting and making friends. Little genius phone watch is a phone watch specially made for children. Compatible with SIM card, so as to meet the direct communication with mobile phones and watches and simplify family communication between parents and children. At the same time, it supports micro-chat, GPS, GLON-ASS and other functional elements such as nine-fold positioning, one-click help, rejection of strange calls, social interaction and so on, deepening practicality.