Apple iOS apps must ask permission for your data, Google Android apps do not have to
Good ol' reliable data spy, Google.
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When you install an app, you probably never read the apps terms and conditions. You merely click Agree. In the terms and conditions, the app developer typically reveals what data you are voluntarily handing over to them such as your online activities, location, contact list, text messages, and more.
Researchers at Carnegie Mellon University recently analyzed the Google Play stores top 100 apps operations, terms and conditions. They found the following 10 requested the most access to your smartphone or tablets hardware: Backgrounds HD Wallpaper, Brightest Flashlight, Dictionary.com, Google Maps, Horoscope, Mouse Trap, Pandora, Shazam, Talking Tom Virtual Pet.
It makes sense that Google Maps needs your location and song-identifying Shazam needs access to your microphone, but why does a virtual pet, dictionary or wallpaper app need anything like that? Both iOS and Android have built-in flashlights, so you dont even need an app.
iOS lets you set permissions on a case-by-case basis. Go to Settings>>Privacy and choose the permission, such as camera or GPS. Slide the slider to Off to deny a permission. Unlike iOS, Android doesnt have per-app permission controls. Google had it as a hidden feature in Android 4.4.2, but removed it. No one knows when or if it will be back.
http://www.freep.com/story/life/advice/2014/11/14/free-smartphone-apps-data-theft/19017907/