Learn how to lock and unlock the SIM PIN on the HTC One M8 for Windows.
On this page:
From the start screen, swipe left.
Scroll down to and tap Settings.
Tap applications at the top.
Scroll down to and tap phone.
If necessary, scroll down and tap the SIM security switch to turn on.
Tap change SIM PIN.
Enter your current SIM PIN.
Enter the new SIM PIN.
Re-enter the new SIM PIN.
The SIM PIN code can protect your SIM from being used in other devices. When you turn on the SIM PIN lock, the device prompts you to enter the code after turning it on.
Scroll down to and tap the SIM security switch to turn on or off.
Enter the current SIM PIN.
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