Instructions on inserting/removing your SIM can help with activation issues/errors, browser connection problems and a blank/frozen screen.
Don't attempt to insert the SIM card while the device is powered on. Doing so may harm the SIM card and/or the device.
Ensure that the device is powered off.
From the upper-left edge of the device, remove the card tray. Utilize the insertion/removal tool to unlock the tray by inserting it into the provided slot then remove the tray.
With the gold contacts facing down and the notch located in the lower right, insert the SIM card into the tray (figure 1) then insert the card tray (figure 2). Ensure that the card is properly seated in the tray with the front of the card under the notch (figure 1). Press in on the tray to lock it into place (figure 2).