Device Guides
Apple iPhone 4
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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
Choosing GPS settings on my mobile phone
Want to select GPS settings? Follow these easy instructions.
Tap Settings.
Tap Location Services.
Tap the indicator next to Location Services.
Depending on the current setting, the function is turned on or off.
Tap the indicator next to the required application to turn GPS application usage for the required applications on or off.
The menu items are only available if you turned on Location Services in step 2.
Tap Settings to save the settings.
Tap the Home key to return to standby mode.