My iphone has not been recieving all the texts sent to me and will also occasionally say no sim card

Hello wb27,

Welcome to the Apple Support Communities!

I understand that you haven’t been receiving all of your incoming text messages and you have noticed an alert as well that says you have no SIM card installed. It is very possible that these two issues are related.

I would first suggest troubleshooting the issue with no SIM card. To begin this process, please read over and work through the instructions located in the attached article below.

If you get an alert about the SIM card in your iPhone - Apple Support

Have a great day

Hi

Contact your network provider ask them to check service .

They may sent a Simcard update or a new Simcard .

Cheers

Brian (UK )