Digi WR31 - Test SIM 2

How to test a WR31 router step by step.
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5.3 Test SIM 2
Navigate to:
Configuration - Network > Interfaces > Advanced > PPP 1 > Mobile
Change “W-WAN SIM: from “SIM 1” to “SIM 2”
Click Apply.
Next navigate to
Configuration - Network > Interfaces > Mobile
And select SIM 2
And under “Mobile Settings”
Enter the correct APN for the SIM card installed in slot 2
Click Apply