Orange service won't let me use my free internet data?

I got a new orange SIM card today for my iPhone 3GS and topped up £10 for the Dolphin plan which gives me 400 free texts and 1 GB of free internet. But when I try to do anything involving using internet the Orange page opens saying I can't I access the internet because I have no credit. Now I ended up losing my credit because of a silly mistake but I still have the 1 GB of free internet available so why won't it let me use that!

Any help would be appreciated.

How to tell how many GB my iPhone 4S has?

My friend sent me an iPhone 4S from abroad and I don't know how many GB it has. I know you can tell by going to Settings, but this phone has no SIM card so it won't let me access its menu. I tried setting it up but after selecting language, timezone and Wi-Fi connection it stops me saying there's no SIM card. So I'm also wondering if I can put my own SIM card into this phone for a minute, check its capacity and then put it back on my own phone (I have an iPhone 4S too). But the thing is I don't know how to remove my SIM card from my phone, Can anyone tell me how to find out the GB capacity without having to check it on Settings? Or at least tell me how to switch my SIM card from one phone to the other?

Plugged in an EZ Connect, now laptop doesn't have internet without it?

My sister had an old computer in her room that we're getting rid of now. She handed me something she didn't know what it was, and I told her I'd plug it into my computer and see what happened (bad idea).
It says on it SMC EZ Connect and I installed the driver software etc etc and I told her that I didn't know exactly what you use it for (still don't). I unplugged it and turned my laptop off. A few days later I went to use it and it said it didn't have any connections available and the icon was different. It used to be bars, and even when I didn't have a connection then it just had an x by the bars. Now it was a computer with a plug beside it and an x.
I knew my wi-fi was working because my sister's laptop and all of our iphones/ipods were working fine with it. I then thought to plug the EZ Connect back in and of course, the icon went back and I connected to the internet fine.
The question is, how do I get it back to being able to connect to the wi-fi without it?

(I know that it was stupid to plug it in without knowing what it was, but it's already happened now.)
Also, I'm not completely stupid about computers, but I don't get everything either, so please explain it simply if you can haha.

How to save battery on my iPhone 5?

I'm going camping and I'm going be totally out of service up in the hills but I still want to use my phone to take take pictures so how would go about making my battery last without turning my phone off?

I get an error for every single song download?

I use itunes match for my iPhone and computer so that I can listen to my music whenever, however when I try to download a large amount of songs it gives me an error saying the song can't download. I've done this before and it worked fine, but recently I added a bunch of songs to my library and it won't work not. Also, I tried updating my iPod today to 6.0 and it gave me the same error that it was giving me for the song downloads and stopped downloading when it got to 700 out of 800mb

My videos on my iPhone 4S has no sound?

Okay YouTube videos sounds ringtones and message sounds works except my videos I can her the backing sounds but not my voice how can I fix it. It's really annoying

Found an iphone but my sim won't work?

Ok so obviously the person cut her line already but i think the contract of the phone is not over yet, anyway my sim won't work when i put it because i'm with another company, and the phone only works with people who's with 'virginmobile' if i sold it to someone else who has a virgin sim card will it work?

What would the price of nokia lumia 520 be in october?

I'm currently using the Galaxy S4 but it has a lot of problems so I'm going to sell it off and save up for the iPhone 5S or the next generation of the HTC One. Here's the thing - the iPhone would be way too expensive when it comes out and it'll take about a month or two for the prices to fall and also for it to be available everywhere else so I was thinking of getting the Lumia 520 and use it till January or December. How much would the price fall for this device? And is it worth getting for like two months?