How do I unlock a SIM PUK lock on a Samsung Galaxy S23 with Xfinity?
Answer
Get the SIM PUK from Xfinity Mobile account tools or support—do not guess. Enter the PUK carefully, then set a new SIM PIN. If Xfinity cannot supply the PUK, ask for a replacement SIM or eSIM.
Before you start: stop right away if…
- Too many incorrect PUK attempts can permanently disable the SIM.
Follow these steps
Retrieve the official PUK
Sign in to your Xfinity Mobile account or contact Xfinity using an official number and ask specifically for the SIM PUK for this line.
You should see: You receive the PUK code from Xfinity.
Enter the PUK once carefully
Type the PUK exactly on the phone’s PUK screen and confirm.
You should see: The phone accepts the PUK and asks for a new SIM PIN.
Set a new SIM PIN
Choose a SIM PIN you will remember and store it in a password manager, then confirm cellular service returns.
You should see: Calls and data work again.
Replace the SIM if needed
If Xfinity cannot provide the PUK or the SIM is permanently locked, have them issue a new SIM or eSIM and activate it in the S23.
You should see: Service moves to the replacement SIM.
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Extra tips
What to look for: Exact wording SIM PUK locked, a PUK entry screen, and Xfinity account pages that show SIM details.
Before you change anything: Stop guessing PIN or PUK codes. Have your Xfinity Mobile account login ready. Prefer copying the PUK from an official account portal when available. Be prepared to replace the SIM if the PUK is unavailable or exhausted.