Share analytics, diagnostics and usage information with Apple
Apple asks customers to help improve iOS by occasionally providing analytics, diagnostic and usage information. Apple collects this information anonymously.
iOS 10 and later
If you have iOS 10.3 or later, go to Settings > Privacy & Security, scroll down and tap Analytics or Analytics & Improvements. Then tap Share iPhone & Watch Analytics.

If you have iOS 10 to iOS 10.2, go to Settings > Privacy > Diagnostics & Usage, then select Automatically Send or Don't Send.
Find out how your data is managed
iOS 8 and iOS 9
Go to Settings > Privacy > Diagnostics & Usage, then select Automatically Send or Don't Send.
When you turn on Automatically Send, you can also turn on Share With App Developers. This helps developers improve their apps by allowing Apple to share data, as well as statistics about how you use their apps.
iOS 5, iOS 6 and iOS 7
Go to Settings > General > About > Diagnostics & Usage, then select Automatically Send or Don't Send.
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