New Update
Why my phone can’t update to the new ios 15
iPhone 6s Plus, iOS 15
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Best reply
I see you have an iPhone 6S. The iPhone 6S can update to iOS 15, but the iPhone 6 (without the S behind it) cannot.
If you have an iPhone 6S and find it difficult to upgrade, you can try updating via your mac if you have one.
Also, make sure that you check this article and follow the steps provided
Update your iPhone, iPad or iPod touch – Apple Support (UK)
