Q: iphone 5 sim not activate supported please open

I'm unsure of what you are saying... your iPhone won't activate because the SIM is not supported, is that correct?

Have you made sure the phone is not locked to another carrier than yours?

Have you tried to remove and put back the SIM card?

Have you tried to see if there was an issue with the SIM card by testing another SIM card from the same carrier in your phone, or testing your SIM card in another phone with the same carrier?

Useful reference : How to unlock your iPhone for use with another carrier - Apple Support