Q: after update says no SIM card, can't sign in itunes

Hi SueMac,

I'm sorry to hear you are having these issues with your iPhone after a recent update. If you are getting a No SIM messages and are unable to sign in to the iTunes Store, you may find the information and troubleshooting steps outlined in the following articles helpful:

If you see 'No SIM' alert on iPhone - Apple Support

Can't connect to the iTunes Store - Apple Support

Regards,

- Brenden