Why does my iPhone keep restarting?

I have an iPhone 6 and it has the newest updates and stuff. Recently it's been restarting 1 to 3 times a day. I'll be using my phone when it just goes to the black screen with the apple symbol on it. I have no idea why it's doing this. Anyone know?

How to unlock a disabled iPhone 5c? - 1

My friend recently bought an Iphone 5c from her friend. The phone has been disabled because of too many wrong attempts guessing the password. Is there a way to unlock the phone without going to the Apple Store?

How to live without Netflix?

My brothers annoying meddling girlfriend changed the password to their Netflix because I watched Orange is the new black and I'm 14. Though I would probably just watch it when I turn older so what's the point? I don't like watching TV in the living room because my parents are loud and intrusive. I'm an inside person, what can I do or watch on my tablet or iPhone to pass the time?

Is it possible that a dead Iphone would give off a busy signal?

I was trying to call a friend today and I got a busy signal. The phone did not ring and I immediately got a busy signal. The phone was also not receiving imessages or texts. The friend said that their phone died. Is that possible or might they have been doing something to keep calls from coming through?

What is the best texting app to use?

I want a texting app that will send messages to phones without them having to have the same app. It doesn't have to have calling; that would just be the icing on the cake. I do not like textfree by pinger, therefore, don't even suggest it.

Added (1). For an Iphone 4

How to unlock my iphone after this?

I recently brought a iPhone 4s (second hand) and when I turn it on it says I need to enter my iTunes password. Here's the problem, The person who I brought it off has moved. And it's not close. Plus, they have been avoiding me. I have been into a shop but they said they can't do anything.

Projector for iPhone 6/iPad?

I love to draw and color and watch movies on my iPad so I'm wanting a cheap (less than 80 dollars- preferably close to 50) projector that works good. If you could tell me what website they're at and tell me what else is need (like a cord or something) and then let me know where to get that too. Please and thank you!