Why is the cellular signal strength LED blinking blue on FWA505?

Zyxel_JoyLee

The possible reasons for the cellular signal strength LED blinking blue are as follows:

1. No SIM card
2. Invalid SIM card

For information on other LED status indicators, please refer to the Quick Start Guide.

https://www.zyxel.com/global/en/support/download?model=nebula-fwa505