iPhone instruction manuals are available online. Apple.com offers instruction manuals for iPhone smartphones. The manual of the iPhone depends on the make of the smartphone.
On Apple.com, click on the Support icon located on the top bar. The site directs you to a new page where you can see a Manuals icon under the resource column at the bottom of the page. Click on the Manual icon. The next page allows you to browse through the available iPhone products. From here, you can download the desired manual. Apple.com also offers instruction manuals for other Apple products. Instruction manuals provide more information about a product, and they help users understand how a product works.