How to tell if an iPhone 4s is locked or unlocked?

I bought a brand new iPhone 4s off eBay, it said that it was for Sprint. When I turned on the phone it said it wasn't activated and also that there's no SIM card inserted. How can I tell whether this phone is locked or unlocked? I've already tried the websites that supposedly tell you with the IMEI number but it doesn't tell me anything. And if I were to connect it to Sprint, would they insert their own SIM card or does the whole SIM card thing mean it's unlocked?

How to transfer picture from my Nikon Camera to my iPhone?

I have the L310 (Nikon). I already know how to transfer the pictures to my computer. But I have problems doing it with my phone. I have the iPhone 4S. And I've already tried emailing the pictures to my phone. But the email says that the file is too big, and I know it is, and I don't want to compress the file, having the quality of it, go down. Is there any other way I can put them on my phone WITHOUT email? I can think of nothing.It'd be great because then I'd be able to put them on Instagram.

Why do I look bad on IPhone cameras?

When i look in the mirror, my features are fine and in proportion
but when i take either a video or a picture with my iphone camera, my features look weird and my face looks really fat.

but i do take them in fluorescent light in the bathroom too…

i don't know is it just me or is the iphone camera really unreliable?

Does Lifeproof case really work underwater?

I'm going on a cruise in June and am wondering if it would be worth buying Lifeproof case for my iPhone 4S. I was hoping to take pictures under water. But I'm afraid I will end up destroying my phone.

ITunes deleted all of my music

I connected my iPhone to iTunes to put on songs i had just downloaded, and all my music was erased. Around 453 songs were deleted, and when i go to find them it can only find 304… Is there anyway to find all the songs? Please help! Some of my music I can't get back if its gone. Much appreciated.

Can i put movie from my Iphone onto a DVD?

If i bought a movie on my Iphone, is there any way i could put it onto a DVD so i could play it in my DVD player?
Likewise, is there anyway I could get a DVD onto my iPhone?
I have an iPhone 5 and a Toshiba laptop, if that helps you answer the question at all.