Force mobile network provider on NR7101

Lurch

I just installed my NR7101 but have an issue with 5G network selection.

I live in Switzerland very close to France and my router keeps switching to a french provider instead of staying on my Swiss provider.

Is there a way to assign one specific provider?

TThanksfor your help

Internetheavyuser

You can try to use Cellular PLMN function. Here is the content from user manual.