IPhone 5c Half of screen isn't working?

So I dropped my iPhone 5c and when I tried to use it it wouldn't swipe all the way. Half of the screen has white bars and I can't touch anywhere where the white bars are (the touch won't register) What do i do?

Japanese and Chinese translator apps?

I want to learn Japanese and I'm looking for a translator app. So basically I want a dictionary for Japanese translations. I want it to be like, I search up a word and it shows the translation in Japanese

Ex- I search up Light in the dictionary search bar and under that it says the word Light in Japanese. I don't want Japanese symbols though.

Also, do you know of an app that gives you Japanese symbols and tells you the meaning of those symbols and teaches you how to write them? How about Chinese symbols? By symbols I mean words.

So both these questions are for Chinese and Japanese as well. Thanks in advance if you answer either one of them or both ^-^ I'm also using an iPhone 4s for this process.

Why does everyone buy an iPhone from contract?

I usually buy a second hand iPhone that is 1 year old and was used with a case for $200-250 less and use T-Mobile's family plan that costs $20 per line for data, talk, and text.

Why do I see a lot of people using contracts to get their iPhones instead?

Which is better option for me?

I'm using iphone 5s right now, i don't like its shape, but i have no computer,
i think if i sell it i can buy iphone 4s and a used computer,
please tell should i keep it or sell it & buy 4s & computer?

How to fix tan line-ey screen on iphone 4-s?

So my screen was already broken and falling apart at the top when this happened but i dropped it and the screen turned like a tan color and has a bunch of vertical lines on it i can't see the screen but i can still swipe back and forth Please Help