How does T-Mobile's Jump work?

I have a iPhone 5C and I want to trade it in when the 6's debut. I already have half of my 5C paid off. Once I trade it in, T-Mobile will cover the remaining payments for that phone, correct? And once I do trade it in, will I get credit so that I don't have to pay full retail price for the iPhone 6? For example, I trade in the 5C, get some credit, and I pay (I'm guessing) half the price of the 6 and it's completely paid off, right? I'm not exactly sure how this goes so, please, enlighten me.

Dropped iPhone now only partially responsive?

I dropped my iPhone today from the height of about my knee to the floor. Now the screen has vertical black bars that come and go. I have reset my phone. The screen is responsive sometimes. It will go from not responding to touch at all, to only the left side, to the entire thing responding. The thing is, when it does respond it will start doing ttthings on its own as if i were touching it. (ex. Opening the twiiter app.)
Did i just make a wire loose or did i totally screw up my phone?

How much would I get for my CD player?

I want to sell my CD player with a built in iPod/iphone 4/4S dock and radio but the radio doesn't work as the ariel is broken. How much would I get for it?

How to connect iPhone or something auxiliary to my car speakers without a stereo?

I have read a previous thread about connecting a 4 way amp to your car speakers and then connecting a baby plug to it so that you can play an iPod through your speakers?

My current situation is my vehicle does not have a stereo/head unit in it and I currently can't afford one right now. So, I'm trying to find an economic way to still have music for commuting. I do have a wiring harness to match my vehicles stock wiring (to later connect to another stereo) and I do have a rca to auxiliary cord to use. I'm wondering if there's any way to connect my iPod to my car speakers cheap and easy? Any input?

What does the apple symbol with two lines mean?

My dad accidentally washed and dried his iPhone and he clicked the power button and now the black screen with the apple symbol is showing and it has two lines in it that resemble clock hands. He wants to know what this means. He has an iPhone 5

Can I still trade in a cracked iPhone 4s for an iPhone 5s/5c?

It's okay if I have to pay some money, it's better than having to buy a whole new phone and get a new contract and stuff. A little while ago my phone got ran over by a car and it still worked, but then we got it fixed. I guess it was still delicate though, because it cracked a little bit again. Ever since the car thing it's been really laggy and slow, it's really annoying. So yeah, can I still trade it in?

How to backup and replace my contacts on my iphone?

I want to completely reset my iphone 4s. I know how to reset it but I want to be sure that I can get all my contacts back on to it. But I want that to be the only thing that goes back on it. Everything else I have like photos are already backed up to my pc. So how do I do that?

Can I put my iPhone sim into an old blackberry?

I'm going on my D of E expedition next week and need to take a phone for emergencies but I don't want to take my iphone because its too valuable and the battery is so rubbish it wouldnt last 5 days anyway. I have an old blackberry and was wondering if I can just put my sim card from my iphone into it? I'm on contract with o2.