How do I update my iPhone to iOS 26?

An iPhone 6s, iPhone 6s Plus, iPhone 7, iPhone 7 Plus, or iPhone SE 1 isn't capable of 16 or above; they require an A11 or better CPU.

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jakaria96 ~ Your iPhone 7 Plus is not listed here:

iPhone models compatible with iOS 26 - Apple Support

...Found by searching Apple's Knowledge Base.

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