Ericsson W21 - Manual (Page 31)

Configuration and Management
configuration, fill in the appropriate fields and click Apply to save the
settings.
Note: Only enter details you have received from your service provider
and leave other fields empty.
2.4.4 Unblock SIM Card
If three attempts have been made with an incorrect PIN, the SIM card is
blocked and the
Unblock SIM button is displayed beside the “PIN” field.
The PUK code is needed to unblock the SIM card. Click the Unblock SIM
button to display the Unblock SIM page:
Figure 24 - Unblock SIM page
Type the PUK code in the “PUK” field and type a new PIN code in the “New
PIN” and “Retype new PIN” fields. Click
OK to save the settings.
Note: If ten attempts have been made with an incorrect PUK, the SIM
card is permanently blocked, and a new SIM card is required.
2.4.5 Change PIN
If SIM authentication is verified, the “PIN” field cannot be edited. Instead the
Change PIN button is displayed. To change the PIN, click Change PIN to
display the Change PIN page:
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