Does having wi-fi switched on use a lot of battery power?

..or how much longer does the battery last if you had it switched off all the time?

Posted below is a link for Battery information.
And yes just like any feature in iPhone if you use it for any long length of time it does require battery power to provide those services. Posted below are some Battery saving tips
1. Settings-WiFi- turn Ask to Join Networks off. This way the iPhone is not always searching for a network. This can save possible battery life.
2. Settings-General-Bluetooth turn this off if your not using it. By default it is off
3. Settings-General-Mail - Change Auto Check to Manual. This will reduce the times iPhone goes out automatically checking for email and using bandwidth/extra battery life. That way when you tap on Mail your manually requesting to go out and have it fetch your email when you want it.
http://www.apple.com/batteries/iphone.html

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    Hi @sumitkumar884 
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    It is a terrific place to find answers and information!
    For you to have the best experience in the HP forum I would like to direct your attention to the HP Forums Guide Learn How to Post and More
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    Sparkles1
    I work on behalf of HP
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

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