How do I insert a SIM card to my Pawfit tracker?

Firstly use a pen or a pin to carefully PULL the SIM card slot cover out (do not pierce through the hole). Secondly insert the SIM card into the SIM card slot, and make sure the plastic side of the SIM card faces towards the front panel. The SIM card is spring loaded so you should hear a click sound once the SIM card is secured. Finally, replace the slot cover. Please make sure the slot cover is completely shut for the best water proofing.