I accidently turned my iphone camera into this! How do i set it back?

Mully
11.02.2016

GLX
22.02.2016

Turn the phone off and turn it back on.

My iPhone turned off by itself and turned back on while using a app? When I was on YouTube my phone just shutted off by itself then turned on. Is there something wrong with the phone. Also when I click my home button one time the phone sometimes wouldnt come on till the second click. What can I do?
My iphone 4 froze, screen turned green and turned off? I was playing a game i regularly play when it froze. I let it sit there for a couple minutes, I pressed the home button and the screen turned green, It was green for a minute. It shut off and won't turn on. I plugged it into the charger 20 mins ago and still no response. Also, my power button broke a whille ago. What can i do? Keep it plugged in until it turns on or should i unplug it for a couple days?
If I turned my iPhone 5s off for two years and turned it back on, would it still work? I curious. If I didn't take it off my iPhone plan thingamajig and simply shut it down, no communication for two years, would it be able to come back on?
I accidently reset my IPone 4S, and now I want to get all the data back? Ok, so my brother had given me his IPhone 4S, but it still had all these contacts of people I didn't know. And then when I wanted to post a picture or something on Facebook, it would always show up on his account… So I reset it. I filled out all of the information, and now I need to get the old thing back. Please tell me it's possible…