ChicoCa On a regular basis, all connections are lost at both SIMs (regular + eSIM) for no obvious reason. In this area, all celltower connections are usually very good and stable.
The issue is always fixed by restarting the phone which is a Pixel 7 Pro, but it keeps getting more and more annoying because it's always coming back.
I'm essentially very happy with GrapheneOS but issues like this make the OS seem to be unfinished to me.
If you have two Pixel 7 Pro phones side by side, one GrapheneOS and one running the stock OS, and the GrapheneOS one loses service, that might be a GrapheneOS problem... or a hardware problem with the one device!
The situation does sound disappointing, but fixing it may require some experimentation before arriving at an attribution.