My iPhone is not receiving incoming calls

If you have an Apple Watch paired to your iPhone, then you will get notifications on your Watch if the iPhone is locked, and on the phone if it is unlocked and you are using it. You don't get them on both. That is by design. See this for an explanation of notifications with your Apple Watch and iPhone. Notifications on your Apple Watch - Apple Support

See this, If you can't make or receive calls on your iPhone - Apple Support Otherwise describe your issue clearly. Do you see signal on the iPhone?

Hi have you tried taking your sim card out and wipe the sim, check where the sim goes into and make sure its clean. Go down the settings to mobile data ,scroll down to " reset settings" and click on that . Then go back to the main screen and see if you have a signal . Do this after you have cleaned the sim card. You can also try turning airplane mode on and then off and the same with mobile data . Hopefully that may help

That is entirely up to you. I've had an iPhone from the beginning, and an Apple Watch from when they were released. I currently have an iPhone 13 Pro and an Apple Watch Series 6. I do not have issues with receiving notification as described in the support document that I linked, and receiving phone calls, which is what the original post was about.

You however, have not described a problem, and have just posted an interrogatory comment, not a technical support question, which is what the forum is for.

Not all calls are coming through. I’m sitting right by the phone and it is not ringing. I do get a buzz on my Apple Watch though

Only after I get the Buzz on my watch and I’ll look on my phone.

text messages and phone calls not always will notify me.

should we just switch to a Galaxy?

There phones don’t have this problem.