Remove the back cover
Turn the back of your router towards you.
Press the catch at the top of the router and remove the back cover.
Press the catch at the top of the router and remove the back cover.
Insert your SIM
Place your SIM as illustrated in the SIM holder and slide it in.
Insert the battery
Place the battery in your router (bottom first), matching the battery contacts with the router contacts, and press the battery into place.
Replace the back cover
Place the back cover on the router and press it into place.