How to update my iPhone?
Ok update my phone please
[Re-Titled by Moderator]
Here's two different ways to ensure the highest iOS that your phone will support is on your phone.
Update your iPhone, iPad, or iPod touch wirelessly. Click here --> Update your iPhone or iPad - Apple Support
Update your iPhone, iPad, or iPod touch with the Finder on a Mac computer --> Update your iPhone, iPad, or iPod touch with the Finder - Apple Support