Can the iphone 16 gigabyte update to 10.3. I went to update it and it said it was up to date and there were no updates required?

Can the iphone 16 gigabyte update to 10.3. I went to update it and it said it was up to date and there were no updates required?

It depends on the version of the iphone. Look on the back and it should say iPhone with a number. Reply to me with that number please