Device Guides
Apple iPhone 5s
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iOS is the operating system software installed on your iPhone. To find out which version you have: Tap Settings, Tap General, Tap About, and view the version number.

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How to
Clearing browser data on my mobile phone
When you use your mobile phone's internet browser, various data is stored temporarily in the browser memory, such as cache and cookies. If you've problems loading websites, deleting this data may help.
Tap Settings.
Tap Safari.
Tap Clear Cookies and Data.
Tap Clear Cookies and Data to confirm.
Tap the Home key to return to the home screen.