Unblock the SIM PIN - Thunderbolt™ by HTC
- Retrieve the PUK code. Refer to Locating the 4G SIM PIN for assistance.
- Enter the PUK code then select Next.
- Enter a new PIN (4-8 digits) then select Next.
The default PIN code is 1111.
- Re-enter the PIN then select OK.
If presented with another screen after entering the PIN, select OK.
Last Modified: September 9, 2011