SIM card
My phone needs maintenance, do I need to keep my SIM card in my phone??
iPhone XR, iOS 14
Question marked as
Take it out if you are sending it away, Leave it in if you go to a store but remember to take it out if they need to send it away or replace it.
You can see additional service information within the following article:
Get your iPhone, iPad, or iPod touch ready for service - Apple Support