Dual Sim iPhone is losing signal

H i everyone,

I’m experiencing some weird signal losing situations quite often lately.

I’m using dual sim with my iPhone having my primary line with an Esim and my business line nano sim.

When starting a call I have full coverage. After a few seconds the second line is losing signal. It’s the other way around starting the call with the other Sim then the inactive Sim will lose signal.

I was resetting my network settings and also resetting my phone completely. The issue still exists and I talked with some colleagues that are experiencing the same.

Does anyone have any experience with that?