Sim Card Lock; Removing The Sim Card - Acer Iconia W510 Benutzerhandbuch

Select your data connection from the list of
networks.
Select Connect, then Next.

SIM card lock

Your computer may come with a SIM card lock, i.e.,
you will only be able to use the SIM card provided
by your network operator.
To cancel the SIM lock, contact your network provider.

Removing the SIM card

1. Make sure your computer is turned off.
2. Press the SIM card into the slot then carefully release. The SIM card will
be pushed out of the slot.
24 - Your Acer tablet PC tour