How can I update my phone?
How can I update my iPhone 6S
iPhone 6s, iOS 11
How can I update my iPhone 6S
iPhone 6s, iOS 11
Go to Settings/General/Software Update.
Go to Settings/General/Software Update.
You have 2 choices; delete some of the stuff on your phone so it has 3 GB free (as the message says) or update it using your computer—>Update your iPhone, iPad, or iPod touch - Apple Support
Showing that page.After clicking the link it is taking me Apple Support page
The last two paragraphs of the image you posted indicate what you need to do -- either clear up some free space on your iPhone, or update via iTunes.
How can I update my phone?