Unpublished rules and clarifications from Apple's App Review team that can cause your iPhone app to be rejected.
Are we missing one of your rejection reasons that other developers may not know about? Submit it.
Please make it clear to the user that their personal user data is being uploaded to your server, and obtain their consent before submission.
From Dave Wood, whose app “reported the device stats, model, OS version, etc. to our servers on startup”.
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