Will ios7 work with iPhone 4?

I just got the iPhone 4 because it was free with sprint and I was wondering if the new iPhone coming out I think it's iOS 7 but will it work with iPhone 4 or will my phone be old by then xD

Need another opinion on this?

So about a week ago I had my "best friend" here. We went out shopping and she ignored me for about 3 hours and would not speak to me at all so I let her go, she was also rude to my parents. We then got home and my Mum had gone out. So Me, her and my Dad were at home.
Afterwards she walked in and spoke to me again. So I told her I was unhappy about how she treated me and my parents and told her it was best if she went home to which she disagreed.
My Mum is also selling her old iPhone, and so my "friend" told me she wanted it.
I keep trying to tell my parents she doesn't deserve it after the way she treated us and they don't agree with me.
She constantly bothers me so I don't know what to do.
What is your opinion and what should I do?

IPhone 4 home button going crazy?

Quite randomly the home button has started going mad. It doesn't always respond to the touch but will automatically press it's self without touch lighting the screen (as if you have touched it), and activates the voice control (as if it's being held down), all this can happen when it's just sitting alone on a table & does it at random times.

It's not a new iPhone, I bought it when the 4 was released. Does anybody know if it's a software problem & any way to correct it? Or is it simply a physical problem with the button which needs replacing?

Any advice would be appreciated.

Where can I find the apple time machine?

Well I'm trying to get back my history I've deleted on safari I have a iPhone 4 and its almost impossible to do but everywhere I go says to get time machine how do I get that ps. It's not in the apple store so… Help me out how can I retrive my files

My home button on my IPhone 4S isn't working?

Well it's been fine up until today when it stopped working. I don't understand how other than it might have overheated? I try not to let it die (it normally doesn't), I rarely drop it, I don't press down too hard on the home button and it's never around water other than the odd time when I've sweated and it's got onto my phone but it's never gotten near the home button(inside pockets in my jodhpurs.). I never let it near my horse either, it's always in safe hands. My mum says its my fault. Is it? And how can I repair it? I have assistive touch on now but it's quite annoying.

I can't connect to the internet with one of my computers

One of my computers just won't connect to my wireless internet anymore, but my iphone and laptop still have fine connection. My computer can still "see" the network, and sometimes it will connect for a few minutes, only to lose connection again.

I've tried restarting everything, and replugging all the cables and so on. I've also tried changing the network frequency several times. It can still connect to other networks, so I really have no idea what is wrong.

Can anyone here help me?

Added (1). I tried doing as you said, Chris. But when I tried to reconnect again, it didn't ask me what kind of network it was (as it should, I remember that happening before when I connected to new networks), it just said "You can't connect to this network".

Where has my sound gone on my iPhone

When I play music I can see the bar at the top numbers are counting up so its playing but there's no sound bar and I can't hear anything! But when I put earphones in I can hear fine and the sound bar suddenly appears! It's almost as if the speakers have broken! I've tried blowing in the hole for the earphones and tried turning it off and on. Never dropped it in water or anything.