Can i get my iPhone 5 replaced?

One week ago i dropped my 3 months old iPhone 5 and it's a bit scratched and bumped now:
( http://instagram.com/...OxgQECwwE/ ).
Today, the iPhone's lock button stopped working - i need to click like 9 or 10 times for the screen to lock.

Can i get my iPhone replaced, or did i loose the warranty the moment i dropped the phone and it got bumped?

Added (1). Also, i didn't buy it at apple store but at our local mobile operator, and i can't take it to the apple store because we don't have one in our country (yes that is possible… )

How to trade my iPhone 4 for a 4s?

My friend gave me her iPhone 4 after she upgraded to the iPhone 5. I want a 4s but I can't possibly upgrade since I have no plan. It has minor scratches but the lock and home button do not work perfectly. It's 32GB though, and I wouldn't mind getting a 4s with 16GB. How coup I trade it? Or how much could I sell this iPhone 4?

Iphone 4 taking ages to send texts?

It doesn't to it all the time, but the loading bar at the top that says its sending just freezes and takes ages to send the message, i always have full signal and i've tried resetting network settings… How do i fix this?

How long do I need to leave my Iphone in rice after it got wet?

So I dropped my Iphone in the toilet. It was only in there for about 8 secs. I told my friend and she tried turning it on and it showed the apple thing and then it shut off and wouldn't turn on. We were gone so I couldn't get home and put it in rice. I put it front of a fan till we got home, then we tried plugging it in and nothing happened. I didn't get it in rice till 4 hours after it got wet. Did I forever ruin my phone? Its been in the rice for 21 hours now. Will leaving it in rice work?

How would you deal with a roommate that steals?

Exactly one week ago, my roommate stole my phone(iphone 5). I know it was him for sure so i'm not gonna go into detail about that. I didn't know the roommate before i moved into my apartment(it was a random pairing). I still have to live with him for another 6 months before our lease runs out. I can't prove he did it so I can't go to the police and I already tried locating it. What should I do in terms of dealing with my roommate?

IPhone 5 on Giffgaff or Virgin Mobile?

There's a mobile phone carrier called giffgaff that has unlimited texts and data and 250 mins for £12 a month. The problem with giffgaff is that i'm worried there may be a problem, i've seen on forums that people have had problems with internet and having their credit being put on straight away. Also, you can only buy credit for giffgaff from places at have a PayPoint, (co-op) etc.

Virgin mobile gives you unlimited texts and dats for £15.It also lets you use that £15 credit. (For calls etc) its better than giffgaff as its well known and may have better internet coverage and more reliable overall, but does not have any minutes. What one should i choose? Giffgaff or virgin?

WHy won't cydia let me download anything?

When i try to download Winterboard or Color Keyboard, it just says NetDB: Open codename nor servename provided, or not known. I'm using the new evasi0n jasilbreak and i have a Iphone 5, 6.1

Will facetime ring on both devices?

I've already got an ipad 2 and i'm getting an iphone soon but was wondering if someone calls me on facetime will it ring on both devices?