My brand new 'faulty' iPhone 4S has turned up?

So I ordered an iPhone 4S off a refurbished phone website for £200 and it turned up today and everything was fine until it came up with a 'replacement needed' message. So I took it to a phone shop and they said there's nothing they can do.

Taking photos on iPhone to appear on another iPhone's photo stream?

I'm going on holiday and don't want to take my iPhone 5c as it might get damaged/lost etc. So I want to take my old iPhone 4 just to take pictures on it. I was just wondering if there was anyway so when I take a photo is automatically appears on my iPhone 5c's photo stream back home?

(This is just incase I lost my old photo - which wouldn't matter too much since it is extremely slow)

My iphone 5 is stuck on the battery and won't charge?

Ok so iPhone was dead then i put it in the charger and waited like 10 minutes and the apple logo came back on thennit got the loading sign and went back to the battery logo then it got the apple logo again after like 10 more minutes and the loading sign again then back to the battery logo now its been at the battery logo for like 4 hours and i don't know what to do

Is my charger damaging my iphone?

So the other day i left my charger at my friends place and since then i have bought a cheap 10$ charging cord from walmart. I used it to charge my phone (iphone 5s) and every time i plug it in it says something about it not being certified and it may not work reliably. Sometimes it charges it sometimes it doesn't. Anyways I used it to charge my phone for 20 minutes before I went to work. When I got to work it was at 60%. About an hour into my shift i went to check my phone and it was extremely hot and wouldnt turn on. I panicked. I plugged it in using a certified iphone cable from my work and it immediately turned on and showed 6% battery life. Anyways, is there anyway that it damaged my iphones battery? Should i stop using this cord. As well i'm charging it right now and it seems to be charging extremely quickly. Its not plugged into the wall just into my macbook.

How to recover lost contacts from iPhone 6 after jailbreak?

I have an iPhone 6 may jailbreak it for a better experience and I'm not the exception. When I finished jailbreaking everything is OK except for my contacts taken by the iPhone 6. I can't find them. I usually synced my phone with iTunes. Now can I only restore lost iPhone 6 data after jailbreak?