I would like to request the following feature to the mentioned router:

Allow to receive calls on the SIM card

Background

I use the mentioned LTE/4G router with a SIM card. That SIM card (called "MultiSIM" by my provider) is a secondary SIM next to my main SIM. If I have an incoming call both SIMs are called/rang at the same time. Since the router doesn't allow incoming calls on the inserted SIM, the incoming calls will be rejected by the router. On my phone (with the main SIM) I only get a notification about a missed call. So basically I can't get an incoming call on my mobile phone.