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Limit Ad Tracking
Navigate to the iOS Advertising Privacy settings (Settings > Privacy > Advertising) and do these three things:
- Turn on "Limit Ad Tracking"
- Touch "Reset Advertising Identifier" (which I wrote about in January 2013), and
- Touch "Learn More" and learn about what an "Advertising Identifier" is
Disable optional System Services
Apple hides its System Services settings all the way down at the bottom of the Privacy > Location Services panel. If you've owned your iPhone for more than a few months you'll have dozens (possibly over one hundred) apps listed on this screen, making it a very long scroll. If you actually make it to the bottom of the list (most people don't) you'll see the fabled System Services setting and the explanation of what that little purple arrow icons means.
Again, the path is Settings > Privacy > Location Services > System Services.
I recommend turning OFF the following:
- Settings > Privacy > Location Services > System Services > Diagnostics & Usage
- Settings > Privacy > Location Services > System Services > Location-Based iAds
Diagnostics & Usage
This setting monitors everything you do on your iPhone and "anonymously" sends it to Apple for "improving iOS." Whatever. It's just like when all the major software companies changed their install screens from "send usage data?" to "customer experience program" or some such nonsense. If you leave the "Diagnostics & Usage" option on, you're giving Apple permission to monitor and record everything you do on your device.
Enable Safari security settings
Navigate to the iOS Safari Settings (Settings > Safari) turn on the following:
- Block Pop-ups
- Do Not Track*
- Block Cookies is set to "From third parties and advertisers"
- Fraudulent Website Warning
*Apple's one of the few companies that still supports the aging Do Not Track standard in its mobile Web browser. Even if it is considered dead (my ZDNet colleague Ed Bott called it "worse than a miserable failure,") I turn it on anyway, for the few web servers that actually respect it.