Out of the box, they’re not water or shock-proof, so you’ll need to be a bit more careful.
You’re limited in how much video you can record to whatever storage is left on your i Phone (backup your photos and delete them and you should have tons of extra space).
The simplest way is never to save the person’s name so only their number appears in your recent calls list.
To hide all your recent and favorite contacts in the App Switcher – which appears atop your screen when you press the home button twice – tap Settings Show in App Switcher and toggle off Phone Favorites and Recents.
If you take a look at the customer reviews in the Apple Store, you'll be greeted with more than a few remarks exclaiming "this didn't work!