Is it ok, is it weird or what?

Is it like, ok to have the iphone 4?
like. I don't know is it weird to be getting an iphone 4 when the iphone 5/5s/5c is out?

How to put a password on only certain apps on my iPhone?

I don't particularly want a password just to enter my phone, I want it for certain apps that I don't want to be accessible to anyone else other than myself. For example, I want a password on my messages app or camera etc. And I was wondering how to do it on my iPhone, can anyone help?

How long will the battery life last for?

I've got an iPhone 4S I've had it for 2 year now I'm going on holiday soon and the flight is 3 hours long and I'll be listening to music through out the journey will me battery life last for 3 hours if I listen to music?

Dropped iPhone 5 in water while it was on?

I dropped my iPhone 5 into water and it was fully submerged in it while it was on. I sucked all the water out and I was sure it would work. After i switrhched it off, stupidly, I turned it on and the screen was OK until like lines came on the screen and then random words came on the screen like it was fixing it but then it froze. Right now I've put it in rice. I just want your thoughts on whether it will be OK and what effects switching on will have. Also, when should I switch it on again? Thanks

Added (1). https://discussions.apple.com/...1?tstart=0
Look at this. This is what happened

Can I remove scratches off my Iphone 5S?

As I was coming out the car, my iPhone 5S fell onto the ground and the edge bumper where the buttons are got scratched and now it is very rough and is fairly dented. Unfortunately, my previous case had broken, so I had no case on my phone, although I do have one now.

Can this rough, chipped surface be fixed in any way by me at home?

If so, please tell me how. I'm really annoyed as it was mint condition until now, and despited having insurance on it, don't really want to pay £100 as this is the excess.

Any help is greatly appreciated, many thanks!

Difference between AT&T iPhone 5s/c and VERIZON/SPRINT iPhone 5s/c?

I'm looking to buy an iPhone 5s or c (haven't made up my mind yet) on eBay and I see that Verizon and Sprint iPhones are significantly easier to find and cheaper than AT&T iPhones. Why is that? What are the major differences that make these products of Verizon and Sprint cheaper?

Also, could anyone please tell me the difference between iPhone 5s and 5c please.