iPhone 16 (IOS 26) showing "No Service" — tried all basic fixes

I’ve tried almost all the remedies suggested in the Apple Community and online — including restarting the phone, enabling/disabling Airplane Mode, hard restart, removing and reinserting the physical SIM, and resetting network settings.

However, nothing has worked. My iPhone 16 still shows No Service.

I have one physical SIM and one eSIM.

When I turn on Airplane Mode, both go into “No Service.”

But interestingly, when I remove and reinsert the physical SIM, the eSIM regains signal — not the physical SIM itself.

Is there any other way to fix this? I’d like to avoid a full reset if possible.

Please suggest any solutions.