A:AnswerYes, it will protect your phone, it goes slightly above the screen to protect face-down falls. It also feels grippy in your hands and is not slippery like some other cases. If your someone who rarely or never drops your phone, this is just fine. If you are clumsy, get a nice otter box.
A:AnswerIt doesn’t come with a MagSafe charger. It has MagSafe capabilities so it will give you a color when you put it on the phone and can use on a MagSafe charger, however it doesn’t include the actual charger. You would want to buy a separate charger. Apple makes a good one so does Belkin.
A:AnswerNo, most cases won’t interfere with signal. The only ones I see messing with signal are certain metal cases other than that you should be fine. If not contact your carrier about signal issues.