I just wanted to know if I have insurance on my iPhone

For coverage information: Check Your Service and Support Coverage - Apple Support.

For trade-in: Apple Trade In - Apple.

Your carrier might also have trade-in specials.

Cheers,

Jack

Nobody here can possibly know that. This is a user to user forum, you are not addressing Apple support here.

Enter your serial number here: link-> Check Your Service and Support Coverage - Apple Support

It will tell you if you have a current Warranty or Apple Care+.

Insurance is something you buy from other companies that insure devices, not Apple, and only you would know if you bought it or not. Check your own records to see if you bought insurance for it from a company on your location.