[Turn]ios:about diagnostic capabilities

source:http://support.apple.com/kb/ht6331

Each of these diagnostic capabilities requires the user to has unlocked their device and agreed to trust another computer . Any data transmitted between the IOS device and trusted computer are encrypted with keys no shared with Apple. For the users who has the enabled ITunes Wi-Fi Sync on a trusted computer, these services could also be accessed wirelessly by that Computer.

1. COM.APPLE.MOBILE.PCAPD

PCAPD supports diagnostic packet capture from the IOS device to a trusted computer. This was useful for troubleshooting and diagnosing issues with apps on the device as well as enterprise VPN connections. In IOS 8 and later, this capability are restricted to the USB interface and can no longer are accessed over Wi-Fi. You can find more information at?developer.apple.com/library/ios/qa/qa1176.

2. Com.apple.mobile.file_relay

File_relay supports limited copying of diagnostic data from a device. This service was separate from user-generated backups, does not has access to all data on the device, and respects IOS Dat A Protection. Apple Engineering uses file_relay on internal devices to qualify customer configurations. AppleCare, with the user consent, can also use the This tool to gather relevant diagnostic data from users ' devices. In IOS 8 and later, this capability requires additional the configuration before use.

3. Com.apple.mobile.house_arrest

House_arrest is used by iTunes to transfer documents to and from a IOS device for apps, this functionality. This was also used by Xcode to assist in the transfer of the test data to a device while an app was in development.

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[Turn]ios:about diagnostic capabilities