---
title: "How do I enter a SIM PUK in icom OS?"
slug: "how-do-i-enter-a-sim-puk-in-icom-os"
updated: 2026-05-27T12:58:05Z
published: 2026-05-27T12:58:05Z
canonical: "docs.insys-icom.com/how-do-i-enter-a-sim-puk-in-icom-os"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.insys-icom.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How do I enter a SIM PUK in icom OS?

Click in the new [user interface](https://docs.insys-icom.com/kb/docs/new-and-classic-user-interface-en) on the *Administration* → *Debugging* page on OPEN DEBUG TOOLS , select the *Tool* AT command, enter the *Parameter* `AT+CPIN="PUK","NEW PIN"` (e.g. `AT+CPIN="12345678","0000"`), select the *LTE interface* and click on SEND.

You will find the AT command tool in the classic [user interface](https://docs.insys-icom.com/kb/docs/new-and-classic-user-interface-en) under *Help* → *Debugging*.