iPhone 11 Pro won't save phone number
I recently lost my original iphone 11 Pro and received my replacement. I put in the SIM card but when I try to add my phone number in the Settings>Phone> My Number and click Save, nothing happens. I also went to Settings>Messages>Send & Receive and my number is there with a blue check, but still, nothing.
I powered down and restarted my phone but still nothing. I removed and replaced the SIM card, and still, nothing. What can I do to fix this?
iPhone 11 Pro, iOS 14