This article applies to the Ingenico iWL 250 terminal.
To install a SIM card, complete the following:
1. Press and hold the # and yellow keys together until the terminal powers down.
2. Turn the unit over.
3. Pull down on the two clips near the top of the unit to remove the back panel.
4. Insert the SIM card into the SIM card slot.
5. Place the back panel onto the terminal.