HT201299: About cellular data settings and usage on your iPhone and iPad

Learn about About cellular data settings and usage on your iPhone and iPad
Mhitchcock
Level 1 (4 points)
iPhone

Q: cellular data usage

if cellular data is on and wifi is available which would be used by your phone to access the internet?

iPhone 6, iOS 9.1

Posted on Jun 26, 2016 10:07 AM

by Phil0124,Apple recommended
Phil0124 Phil0124
Level 7 (27,397 points)
iPhone
A:

Generally Wifi is used over Cellular when available and has a good signal.

 

If the Wifi signal is very poor, then Cellular may be used instead if Wifi assist is turned on.

About Wi-Fi Assist - Apple Support

 

Note that good signal is not the same thing as  a good internet connection.

You can have very good wifi signal and still have very poor internet connection.   Wifi Assist only works if the actual wifi signal is poor. Internet connection status is not considered.

Posted on Jun 26, 2016 10:10 AM

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Mhitchcock

Q: cellular data usage

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  • Helpful answers

  • by KiltedTim,

    KiltedTim KiltedTim Jun 26, 2016 10:10 AM in response to Mhitchcock
    Level 9 (55,559 points)
    Mac OS X
    Jun 26, 2016 10:10 AM in response to Mhitchcock

    When connected to WiFi, WiFi will take precedence when the phone is not in standby. If the phone is in standby and not connected to power, cellular data will be used. If WiFi assist is enabled (which it is by default), cellular data may be used when connected to WiFi if there is a problem connecting via the WiFi network.

  • by Phil0124,Apple recommended

    Phil0124 Phil0124 Jun 26, 2016 10:10 AM in response to Mhitchcock
    Level 7 (27,397 points)
    iPhone
    Jun 26, 2016 10:10 AM in response to Mhitchcock

    Generally Wifi is used over Cellular when available and has a good signal.

     

    If the Wifi signal is very poor, then Cellular may be used instead if Wifi assist is turned on.

    About Wi-Fi Assist - Apple Support

     

    Note that good signal is not the same thing as  a good internet connection.

    You can have very good wifi signal and still have very poor internet connection.   Wifi Assist only works if the actual wifi signal is poor. Internet connection status is not considered.