Bro there’s no SIM card in the phone it says it right there at the top

Try replacing your sim card, if that does not work take your phone to a repair shop.

You need to take your iPhone for a long drive. Looks like it is upset on you 🤣

So were we just supposed to ignore the obvious and do wrong answers only?

try checking the sim in other device, is the sim working?

Take your sim card out and put it back in.

I had a similar issue with Wi-Fi. If your phone had a major drop, chances are some connections between the cellular chip and the motherboard came loose

Don’t you see the No sim label above 😂

You have no sim

Contact carrier or Apple support