My iPhone 4's battery recently died and won't turn on anymore?

So my iPhone 4's battery recently died and now whenever I try to turn it on it shows that no battery thing even if its been plugged in for 2 days! My friend says this has happened to her and it was so much out of battery that it was actually dead and never reopened! I'm afraid that I will loose all my data like my contacts, my photos, my apps, etc… Does anyone know what to do?

Getting GIFS onto instagram?

I have made a GIF in photoshop and want to upload it onto instagram, I have it saved on my mac but can't access instagram on it. I have tried to export it onto my iPhone but it doesn't save it as a GIF.

check out my instgram- www.instagram.com/daarrrr_/

IPhone verticle/horizontal lines, mostly purple?

My iPhone screen was replaced not long ago, and ever since this weird thing has happened to my screen, this is what happens:
After opening phone, screen begins to fade into purple lines, vertical and a few horizontal, it's hard to explain, but the horizontal ones are usually across text. The higher the brightness the quicker it happens, when it has fully happened I can't use the touch, but can still slightly see what was on the screen. I'm more than sure it's not a moisture damage problem as my phone has never been near water, any advice as how to fix it would be greatly appreciated!

Iphone lowers resolution of saved photos?

Whenever I try to save an HD photo to my iPhone (especially when I'm looking for wallpapers) the quality of the photo is visibly in a lot lower resolution in the camera roll than it is from the source? I could save a photo that is visibly smooth and HD when I look at the source, but as soon as I look at it in the camera roll it is all pixelated. Does anyone know what causes this or how to fix it? (I save most of my pictures from tumblr, in case that is important)

IPhone 5s won't charge properly?

My iPhone 5s was charging fine, i've never used a fake charger always an official Apple charger. But now, when I plug he charger in it says "this cable is not verified and may not work reliably with this iphone". I've tried 3 different official Apple chargers and they all say the same, I've reset my phone so many times and tried every method I've found! But when it's plugged in it still says it's charging with the lightning bolt on but the percentage just goes down so it's not actually charging! I put it in my Bose speaker and it charges perfecy fine in that but yet no Apple chargers are charging it… Help!
Why will my speaker charge it but not my apple chargers!

Is there a way I can use an iPhone that's logged onto someone else's iCloud?

I recently found an iPhone 5s out in the street perfectly fine but it's logged into the owners iCloud and in order for me to restart it I have to put in that persons password and I've been told that there's no way for me remove that account. So I was wondering if anyone knows if it's safe to use it like that and just add another account or if I can use it some other way?

How to play my iPhone 5 through my car speakers? - 1

My older (1989) car had a cassette player and I used an audio cassette; now I have a 2005 car with no cassette player, no Bluetooth and no 3.5mm AUX - I only have a radio, CD player and a couple of cigarette lighter-type ports.