Will a sprint iphone work for att? - 1

I was looking for a new iphone I was looking on craigslist I currently have att and wanted to know what if I happen to get a iphone for sprint will my sim card from my old iphone still work and activate the sprint phone being as they are both iphones or will I have to unlock the sprint phone to work with att?

IPhone 4S my ringer isn't working?

I can hear sound with my headphones in, but I can't hear sounds at all without them. I tried to press the volume buttons without my headphones but it doesn't work and all that shows up is "ringer" and nothing else like it's stuck or something. What's wrong with my phone? What can I do to get the sound back?

Weird vision diturbance, anxiety or something worse

This and been going on for 4 months now and my health anxiety started 6 months ago so I don't know If this is related but every time I go outside after being out there an hour. I start to see this weird pattern it looks like a tunnel of black bluches moving form my eyes like some sort of worm hole of stars, and it doesn't do away till i go inside ( but it has nothing to do with the heat) I'm sure to the light that effects my eyes and makes This happen but I'm not sure. I'm so scared this is a Brian tumor or something.
Also I'm on my phone ( iPhone ) most the day so could This be it?
And my diet is really bad i only have veg and fruit once a week and don't eat very healthy ( basically live on sandwiches egg and chips ) so could this be the reason?

When will iPhones come to US Cellular?

I can't find a specific date on when this would happen, but there are many websites saying that the iPhone is coming to US Cellular. My friend was saying something about how she heard it was happening in October. Has anyone else heard this information?

My Galaxy 3 just stopped working, the insurance won't cover it, blah blah blah, and I've always wanted an iPhone. I'm debating whether to wait until October to get the iPhone (if it even comes to US Cellular) or just get another Galaxy.

I just spilled a bit of water on iPhone will it be okay?

I was drinking some water when the glass tipped over and spilled a bit on my iphone 5. I have a screen protector and a case that covers the back of my phone and has a bumper. I immediately wiped up the water and shut it off. When I turned it on again it seemed slightly buggy but immediately got better. So I'm wondering, will anything bad happen to my phone? Oh and the amount of water spilled on it was probably no more than an ounce and was only across the screen.

IPhone 5 trouble please?

Okay I'm on my iPhone, I got it about a month or almost two months ago. A few weeks ago I wanted to put my music from my old iPod onto my iPhone. My iPhone reatored & backed up from my iPod. Now I had my weather on the notification screen,& now it's not there. So I went to my location severes and it won't let me, they have the setting though to restore the location and privacy. I just dunno if it will get rid of all my pictures, music, apps, & contacts. I didn't know if it was like restoring or not.

If anyone can Please help me. I'd be so happy cause i called apple and the guy didn't speak great English and told me to pay 65-99$ so I can talk to their supperviser. Ugh. I need help.