I'm scared, I have the option checked on my, but does it really help? What information does it give to Bungie? If I turn it off, will it waste less battery, too?
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The data gets sent to google-analytics. It includes things like your language, screen resolution, etc... You can find some of them [url=https://developers.google.com/analytics/devguides/collection/protocol/v1/parameters]here[/url].