How to restore iPhone 4 with passcode protection?

I have a iPhone 4, which has a passcode on it.
I'm trying to restore it but I'm not able too due to the passcode which I forgot…
*I recently got a new Macbook… So
Anyway that we can restore it without the passcode?

No sound from headset iPhone 3g?

I just got my moms old iPhone 3g and the speakers are working just fine but when I try to use my headphones to listen to music or watch a video or do anything I don't hear a thing. I've tried over four pairs of different headphones but nothing works. Any solutions?

Can I connect an iphone 4s with the computer via USB?

Can I connect an iphone 4s with the computer via USB? And do they give you this usb when you buy it. For example can i connect the iphone with the pc to transfer pics from the iphone to the pc.
When i got my other phone ( a sony ericson) i couldn't

Can't add new album or photos to Facebook on iPhone app

I have an iphone with the newest version on the Facebook app! But when I go onto the photos where normally there's a + button in the top right corner so you can either add new photos of add an album. It's gone! Anybody know how I can get it back! Or even an ulternative way to add albums!

Any cheap iphone 4 on pay monthly?

For my birthday I would like an iphone 4 on pay monthly. I've looked everywhere and the cheapest deal was 25ppm do you know any RELIABLE websites?

Orbit sound bar not working?

I have just purchased theT12v3 OrbitSound bar and it worked fine with my Iphone. I have just tried playing music through the soundbar from my Iphone again, but music is only coming out of my phone, yet the soundbar is charging my phone so it is connected. Does anybody know why this is happening?

My iPhone apps aren't working?

My apps on my iPhone aren't working at all. They were fine during the day. Then I tried later that night and they just stopped working. My Internet and everything else works. When I press the app it looks as if it's going to open then goes back home. I tried restarting my phone and when turned it off all night. I need help.

IPhone 4 temporary home button?

I got my screen fixed at an iPhone store and while I was there, he activated some button that shows up on my screen that acts as a home button and way to access things in your phone if your home button is broken. It's a white dot that shows up on my screen and it gets in the way of things sometimes. How do I get rid of it?