Why isn't my iPhone 6 flashlight working?

I was using it like I normally do it then it suddenly just stopped working, and when I go to turn it on again, it doesn't let me. It's only two months old, so I'm not sure what happened.

How to fix freezing on COD WAW on iphone?

Whenever I try to play online and play zombies with others there it says you need to make a account then when I go to extras>Profile>Make a account when I type to make one the game freezes but the music is still on but it won't allow me Help.

How to transfer song ratings FROM iphone 5 TO itunes?

Without downloading software.
I KNOW I have done it before but can't remember how. I think it's something in how, and maybe even what order, it gets synced but I'm scared to try and loose everything on my phone cause that's where All my ratings are of the songs I want to delete. Please only reply if you have an answer that doesn't require an outside download (I know it can be done in iTunes) and know for SURE I won't loose my ratings.

How much will GameStop give me for an iPhone 4?

I have an iPhone 4 8Gb white AT&T, that I want to sell to gamestop. It works fine and has no scratches on the screen. It has a tiny crack in the corner on the back that's it. How much will they give me for it?