Security
Protecting your SIM card with a PIN
You can protect your SIM card from unauthorized use by assigning a PIN (personal
identification number).
1. Press HOME > MENU, then tap
Settings
.
2. Scroll down the screen, tap
Security > Set up SIM card lock
, and then select the
Lock SIM
card
check box.
3. Enter the default SIM card PIN, and then tap
OK
. To change the SIM card PIN, tap
Change SIM
PIN
.
Restoring a SIM card that has been locked out
If you enter the wrong PIN more times than the maximum number of attempts allowed, your
SIM card will become “PUK-locked.” You need a PUK code to restore access to the phone. This
code may have been provided by T-Mobile when you received your SIM card.
1. On the phone dialer screen, enter the PUK code, and then tap
Next
.
2. Enter the new PIN you want to use, and then tap
Next
.
3. Enter the new PIN again, and then tap
Next
.
The default SIM PIN is provided by T-Mobile.
Emergency calls can be placed at any time, without requiring a PIN. See "Making an emergency call" in
the Phone calls chapter for more details.
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