Galaxy S3 or S4 or iPhone 5 or 5S: Which one is right for me?

So I have never owned a smartphone, I've always stuck with cheaper things to just talk and text. But I've decided I'll be making the switch, but I'm not sure which phone to get. I love Apple products, I own the retina Macbook Pro and I absolutely love it. I trust Apple, but I'm keeping all my options open. Obviously the S3 is a great phone, and I've heard multiple great things about it. And I'm a big fan of how it looks. But, at the same time, I'm also questioning whether or not I should just wait for the updated versions of these phones? I don't have their previous models obviously, and I waited for the retina macbook pro so I could wait for these. But what would anyone suggest? I'll be using it for obvious social media on the go, emailing and what not. And I'm looking to go through T-mobile because I don't do the whole contract thing. Any and all advice would be appreciated, thanks!

Can you fix a water damaged iphone 4 or 5?

So I was looking on ebay for iphone 5 then I see one water damaged then I look it up now I'm kinda wondering if you could fix it? Like what condition does it have to be to be "fixed"

Look for a good car stereo for low price?

So I've been looking into getting a new car stereo for my car.It'll be a nice upgrade and it'll be nice to be able to plug my iPhone into my stereo vs.using an FM transmitter. I've been looking into getting a JVC stereo unit with Bluetooth, it runs about 100 bucks and comes with pandora radio, I think that's pretty sweet to be honest. Not sure of the model but I'm just curious, is JVC a good brand for car audio? Anyone have any experience and maybe any suggestions on other good brands?

How To Fix Slow Facebook App iPhone 4?

When ever i go on facebook and i see a picture I tap on it and it takes a long time to load. It doesn't open he pic yet it just freezes. Does it have to do with the Resolution of the Picture?

IPhone 4 Voice mail Password?

My iPhone has been asking me for my voice mail password for a few days now, and I just haven't had the time to fix it so I've just been ignoring it. Now the notification won't go away and i can't access my phone, or even shut it off. Any ideas how to get it off?

Getting late texts on iPhone 4S?

I turn off my data every time I come home because I have Wi-Fi. But every time I turn it back on when I leave for school in the morning, I'll get late texts sent to me that was supposed to be sent last night. Any ideas why this is happening?