Why can't i update my iphone 12 to ios 18

- Should i update my iphone 12 to ios 18.2
- Can i update my iphone 12 to ios 18
- Why can't i update my iphone 12 pro max to ios 18
- Can i update my iphone 12 pro to ios 18
- Can i update my iphone 12 mini to ios 18
- Can i update my iphone 12 pro max to ios 18
- Should i update my iphone 12 to ios 18
- Should i update my iphone 12 to ios 18.1
- Should i update my iphone 12 to ios 18.1 1
- Why won't my iphone 12 update to ios 18
- How do i update my iphone 12 to ios 18