Zyxel Nebula 5G Router FWA Series - How to Enter or Disable the SIM Card PIN Code

Some users of Zyxel FWA Series 5G routers (including FWA505, FWA510, and FWA710) may experience Internet connectivity issues due to a commonly overlooked step: entering the SIM card’s PIN code. This article provides an in-depth explanation of how the SIM card's default PIN can block the router from connecting to the mobile network, preventing access to the internet.

While the setup process for all three models is similar, the article uses the FWA505 as the example. However, the same steps apply to FWA510 and FWA710. Customers can also refer to the user manual for additional information and setup guidance.

• FWA505 -Link to the User's Guide/Quick Start Guide/Firmware and Datasheet
• FWA510 - Link to the User's Guide/Quick Start Guide/Firmware and Datasheet
• FWA710 - Link to the User's Guide/Quick Start Guide/Firmware and Datasheet

This article outlines simple solutions for disabling or entering the SIM PIN code, either via a mobile phone or directly through the router's web interface, to resolve connectivity issues. 

Note: If your SIM card has a PIN code, the simplest way to remove it is to insert it into a mobile device and disable the PIN. Once done, insert the SIM card into the Router. This should prevent any SIM card locking issues, and your internet should work immediately, assuming the SIM card is functioning correctly. 

Note: Entering the wrong PIN exceeding a set number of times will lock the SIM card

For more detailed instructions, refer to Apple's official guide:
👉 Use a SIM PIN for your iPhone or iPad

Enter SIM PIN via Router Web GUI (FWA505)

If your SIM card has a PIN code configured, you will see the following message when you log in to the Web interface. Click on “Ok,” and you will be redirected to the SIM card settings page, where you can enter the PIN code for your SIM card. We recommend activating “Auto Unlock PIN” so you don't have to enter the PIN code after every reboot.

If the PIN code is entered correctly, you will see the corresponding message, and after clicking “Ok,” you will see on the main page of your device that the connection has been established.

Note:
The PIN is automatically saved in the Zyxel Device

To get to the PIN code entry section yourself just follow the instructions below. 

• You can login to the Zyxel router’s web interface by entering the router’s IP (192.168.1.1) address into your web browser.
• Navigate to the Network Settings -> Broadband and select  Cellular SIM.

Disabling SIM PIN via Router Web GUI 

To disable the PIN code via Web GUI, follow the instructions below. 

• You can log in to the Zyxel router’s web interface by entering its IP address (192.168.1.1) into your web browser.
• Navigate to the Network Settings -> Broadband and select  Cellular SIM.
• Deactivate the checkbox next to “PIN Protection” and press “Apply.” Please note that if the SIM card's PIN code entry has been activated before, you must enter the PIN code in the “PIN” field to deactivate it.

Disabling SIM PIN via Nebula (FWA505)

There is currently no way to manage PIN code settings from Nebula. Still, you can use Nebula Mobile Router's Remote Configuration. is a feature that allows users to configure their device remotely.

• Navigate to Nebula > Devices > Mobile Router
• Under Live Tools, select Remote Configurator
• Tap the Establish button to generate a URL
• Click the generated URL to access your mobile router's GUI

Note: The Remote Configurator feature is Nebula Pro Pack feature, please ensure your organization is the Nebula Pro Pack Organization.