Jezza 1685

Q: Why does Apple Push Notification Service (APNs) use Cellular/Mobile Data over Wi-Fi

I have been looking around and found these Apple support pages and they mention that iOS devices will use the Cellular data connection over a Wi-Fi connection for the Push Notification Service.

https://support.apple.com/en-us/HT203609

https://developer.apple.com/library/ios/technotes/tn2265/_index.html

For example the port that is used (5223) is open on our router but I noticed my iPhone says it is almost always connected to that via Cell but not very often via Wi-Fi.

Is there a reason that if it can successfully connect to APNs via Wi-Fi why it still maintains a Cell connection with the service as well?

 

Thanks!

Posted on May 4, 2015 7:43 AM

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Q: Why does Apple Push Notification Service (APNs) use Cellular/Mobile Data over Wi-Fi

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  • by Jezza 1685,

    Jezza 1685 Jezza 1685 May 4, 2015 9:30 AM in response to Lawrence Finch
    Level 1 (9 points)
    Mac OS X
    May 4, 2015 9:30 AM in response to Lawrence Finch

    On the Apple's AirPort Utility application on iOS or Mac they are displaying connectivity, in real time with link speeds.

     

    I am curious because Apple does not state it on any official support page, just people's 'findings' on the forums

     

    airport-wifi-devices.jpg

  • by Jezza 1685,

    Jezza 1685 Jezza 1685 May 4, 2015 6:56 PM in response to Lawrence Finch
    Level 1 (9 points)
    Mac OS X
    May 4, 2015 6:56 PM in response to Lawrence Finch

    I have today again done the ping test after waiting more than 30 seconds after sleeping my phone, and it even responded to the pings after that amount of time. Maybe something has been changed in these versions of iOS 8 because this hasn't happened before.

    Screen Shot 2015-05-05 at 11.55.04 am.png

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