I want to upgrade my iPhone to iOS 13

Adoekiti wrote:

Why it can’t be upgrade

Because you have an iPhone 6 that does not have the required hardware to update to iOS 13 or higher. The highest possible for that model is iOS 12.5.5.

First of all, an iPhone 6 cannot be updated any farther. Second of all, what does a selfie have to do with that?

[Edited by Moderator]

It's almost 8 years old.