I think i broke my iphone? Lol?

Okay so today i dropped my phone and when i looked at it it had this little color lines on the bottom left side of the iphone 4 then it turned like a solid gray color… I checked but there's no visible crack on the surface but under the screen there's a horizontal line and thats where the gray lines start… What do i do? Can i get it replaced? Is it the lcd screen or the pixel thing?

Having an iPhone Screen Problem Here?

I'm having a problem lately with my iPhone. I do not know what happened but the bottom part near the home button is not responding. It just suddenly became like that.

image
^If you will look at the image above, I couldn't write any messages because that part is not responding. I couldn't also compose emails and delete them simultaneously. Also, I couldn't take photos using instagram. But sometimes, it responds. I was able to move to another tab in the appstore.

Added (1). I just used the picture as a demonstration so it will be much more clearer for you guys to understand. I know its not iOS though.

Added (2). I tried stopping all applications and restarting and it didn't help though. It has been like this for days already.

Can't take screenshots on snapchat?

Ok so I could care less if the other person knows that I took a screenshot, that's not what this is about. I get a pic, I hold to view it, while my thumb is on the screen to view it I press the home and sleep buttons, it automatically goes back to the inbox… Then takes a screenshot of the inbox rather than the pic.

Now my friend can take screenshots, why can't I? I've got an iPhone, I know how to take a screenshot but whenever I try to take one it shots back to the msg history and takes a pic of it. I've tried so many times.

How can I take a screenshot of a snapchat?

My iphone doesn't notify me when I'm receiving a call?

Someone will tell me that they called me, but yet my phone does not ring nor does it give me any type of notification. Not even a missed call. Anyone know what could be wrong with it? It is the iphone 4s & i have had it for about a year and 1/2.

Unlocking an iPhone not currently with any carrier?

I'm travelling abroad in a few weeks, and for a phone I will be using my father's old iPhone (it was his work cell phone, but the company made him switch to a Blackberry for security reasons). The iPhone was with AT&T, and it is 4G. I just ordered my sim card to use abroad, and realized that I don't know if the phone is locked or not. I know to unlock a phone under normal circumstances you call your provider, but it's not currently on a plan or being used as a phone. I know my dad didn't change numbers when he switched to Blackberry. How do I go about doing this?