I think my iphone 4s hardware is damaged, how can I fix it/ how much will it cost to get it fixed?

My iphone 4 (I think) was broken from dropping it onto a pretty hard surface from high up, though the thing is nothing is malfunctioning except for the screen, everything works fine and there are just a few scratches on it. However the screens a complete mess, the colours seem to be inverted (though inverting it does nothing) and I can barely see anything halfway down it due to weird lines. It constantly flickers mildly. Is there anyway to fix this, or can someone provide an explanation for this?

Note 4 selfie\ camera questiom?

I just got the note 4 after switching from the iphone and I was wondering if anyone else has this problem. When I take a selfie with my front camera, the camera makes my forehead look longer and bigger when it's near the top of the screen. Also I noticed that on the bottom o the screen, the picture sort of gets stretched as well. Does anyone have this problem?

Also the quality on the pictures are so HD that it sometimes makes the picture look fuzzy. Is there a way to fix this?

Another question is how snapchat is slow on androids. I guess all androids have this problem though so no one really has a fix to it but if anyone knows anything please let me know!

IPhone won't update to iOS 8.1.1?

I have the iPhone 4s with I think it's 6gbs I know pretty lame, but yeah, anyways, it says I can't update it because it needs 4.4 storage and I need to delete things?
My phone right now is 1.7 available & 4.2 used. So what changes do I need to make?

Getting rid of 9 GB's of saved messages?

Okay so, I have an iPhone 5S and it's a 16 GB and I'm already out of bytes. I have no clue how, but it's always popping something up telling me my storage is almost full and it gets really annoying. It says I have "Messages (Saved) 9.0 GB" and I'm not sure how I have that many, or I'm not sure how they even get saved! I have tried several times to delete all of my messages to see if it would help, and still no luck. It's so bad that I can't even download an app, or take a picture because it says my storage is so full because of the 9 GB's the messages are taking up! Any help is much appreciated, I have no clue how to do get rid of them and it would be so very helpful if someone could find the solution to this! It's irritating when I want to go take a picture and it says I can't because my storage is so full! I have to keep deleting apps because of this to fit more things on it such as pictures. I only have 146 pictures on my phone by the way! I really need help, and so yeah please help me!

Where is the best place to buy factory unlocked iphone 6?

Where is the best place to buy factory unlocked iphone 6?

Added (1). I want to buy an iphone 6 for a friend. She lives outside the US and I don't know what should I tell the apple store employee that the phone will be used outside the country.