Security Things I Have Questions About

1) Settings > Safari

I turned on Do Not Track...I'm assuming this is good to keep everything private, correct?

2) Privacy > Location Services > System Services

I UNCHECKED Cell Network Search, Diagnostics and Usage, Location Based iAds, Popular Near Me, Wi-Fi Networking, and Frequent Locations.

None of these seemed necessary and I don't remember some on iOS 6...is it okay to uncheck these (I don't want to be tracked or anything)