Up date my iPhone with iOS 15 or 16
Up date my iPhone iOS 15/16
iPhone 6s Plus, iOS 12
Question marked as
An iPhone 6s isn't capable of 16 or above; they require an A11 or better CPU. To install 15.7.3, use a computer or the Software Update function in Settings.
If your unit is on 12.4.2 through 12.5.7, it's not an iPhone 6s or capable of 13 or above.
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