Pull the tray out from the nano SIM slot. Place a nano SIM card into the tray with the card's gold contacts facing up and its cut-off corner facing out.
Pull the trays out from the two nano SIM slots. Place your 4G LTE/3G nano SIM card into the SIM 1 tray and your second nano SIM card into the SIM 2 tray with the gold contacts facing up and the cut-off corner facing out.
Single SIM model: