Iphone 4s can't delete pictures?

My friends iPhone 4S won't delete pictures in the photo stream of camera roll, only in albums she made. The restrictions aren't on, I think she has iOS 6.0.1, the delete option is not there when she presses select and clicks on the pictures she wants gone, any ideas?

Added (1). In the photo stream OR*** camera roll sorry

How to connect via FaceTime on a disconnected iPhone 4?

I'm getting a disconnected iPhone 4 (AT&T) and want use it as an iPod Touch. Looking online, it seems it's entirely possible to still connect via Wi-Fi and use features like FaceTime. My question is: how? FaceTime on the phone is a part of the Phone App when placing calls. And FaceTime on the Touch is a separate App, which I can't find on the App Store.

So how do I access and use FaceTime on a disconnected iPhone 4?

How to play your iTunes library on your iPhone?

I don't mean being able to control your iTunes library on your iPhone, like the remote app. I'm wondering if there's an app where I could listen to my whole iTunes library ON my iPhone. Since I can't carry all my music on my iPhone but sometimes when I'm at home I want to be able to access my iTunes library over my iPhone if I put it on speakers or something.

Can't connect to 3G in certain places?

I have an unlimited internet contract on my iPhone 4S, I can browse freely most of the time, but when I go to university, the phone changes from 3G to 3. I think it is trying to connect to the university internet, which I don't want to use or it can't connect to 3G.

How can I stay on 3G when I'm there?

Added (1). I'm in the UK, I'm assuming the area is covered because I can connect outside the uni, just can't when I'm inside…

Where can i get a decent used iPhone 4 for under £100?

I'd love to have an iPhone but i don't have the cash, it would have to be to either UK or European specification and be unlocked.a 4 would be good, a 4S would be even better. I don't want to spend any more than £120. Any help would be much appreciated, thanks.

What MP3 Quality Output To Use? - 1

I downloaded a youtube to mp3 converter.
Its called 'free youtube to mp3 converter', i normally use websites but needed to downloaded several links at once, so i got this.
However there are several output qualities i can choose from and i'm not sure what one to pick.
I normally listen to my music via my iphone 5 with sub £50 earphones, and normally play my music via bluetooth receiver to some speakers from my iphone or laptop.'
I have tried all the diff qualities with one song 'STILL DRE - DR DRE', and posted the MB next to each different output.
Is there really a big noticeable difference between ANY of these?
some of my songs have like separate bits for the left and right stereo, and i prefer that to having it all mixed in one.here are the different qualities:
LAME INSANE QUALITY (320 Kbit/s, 48 kHz, Joint Stereo) 11.1MB
LAME EXTREME QUALITY (VBR, 48 kHz, Joint Stereo) 8.9MB
LAME STANDARD QUALITY (VBR, 48 kHz, Joint Stereo) 6.9MB
LAME ECONOMY QUALITY (VBR 44.1 kHz, Joint Stereo) 8.8MB
HIGH QUALITY JOINT STEREO (320 Kbit/s, 48 kHz, Stereo) 11.1MB
Old Standard (192 Kbit/s, 44.1 kHz, Stereo) 6.7MB
MP3 Audio Book (32Kbit/s, 44/1 kHz, Mono)

Thanks

Added (1). Thanks, is economy and extreme better than standard?
also can you tell a difference in sound?

My iphone battery keeps dying and I'm not using it?

It is connected to the Wi-Fi in my house, so not 3G. It will be 100% before I go to bed, then by the time I wake up in the morning the battery has died.

The battery is draining when I'm not using it?

Today I charged it to 95%, was home for a couple of hours, didn't use it and now it is at 4%?!

What is wrong with it?
I don't have any new apps or anything, it's never done this before!