iphone - Does the Apple Push Notification Service represent a privacy concern? -

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i've been reading extensively on apns, , curious if familiar apple's stance on server-side logging. in order allow push notifications, each device (such iphone) "establishes accredited , encrypted ip connection service , receives notifications on persistent connection."

source: https://developer.apple.com/library/ios/documentation/networkinginternet/conceptual/remotenotificationspg/chapters/applepushservice.html

this means apple tracks every single ip address user's phone connected @ time including wifi hotspots, , initiate automatic connection servers when user enters his/her own home, when user not using his/her phone. while understand process essential allowing push based notifications, question how long apple keep log data?

(they claim not log content of notifications including imessage here: http://images.apple.com/ipad/business/docs/ios_security_feb14.pdf however, i'm interested in logging of metadata associated notifications.)


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