How to get 4g on tmobile with my IPhone 4?

I have an iPhone 4 and I have tmobile. Right now I have tmobile edge and I heard that once the iPhone 5 comes out, tmobile users that have an unlocked iPhone can get 3G or 4g instead of having E for their data. Is there a way I can get 4g or would it still not work?

How to use my iPhone 4 without a sim card?

I get my sim card for it Tomorow, but it won't activate without a sim card. Is there anyway I can go on it and when I get my sim card it will still work?

Added (1). But it won't even activate

My Internet stops working if I turn on my laptop? Uk?

I have had my Dell Inspiron 1545 for nearly 3 years now, and up until a few months ago, the Internet on it worked fine. It works perfectly fine when I use my phone and ipad, but when I turn on my laptop, it first turns red, then it just goes blank. We were using BT for all of that time, until we switched to Talk Talk about 2 weeks after it stopped working. We switched because we heard the Internet would be faster (It is, on my IPhone and IPad) and that it would be a more stable connection, which we thought would be the answer. But, unfortunately it didn't. I've already had my uncle take a look at it, and he is confused too as why it isn't working. If I take my laptop to someone else's house, it works perfectly fine. It's only at my house. Please, some help?

Can I use an iPhone 4 with my ATT Go Phone Plan?

I was thinking about buying an iPhone 4 from my friend since he just got the new iPhone 5. I was looking around online and I learned that I will need a microsim in order to use the iPhone 4. If I go to the ATT Store will they be able to switch me from a normal go phone sim to a microsim? I do not wish to cut my existing Sim card into a microsim because that's too risky.

I'm asking this question because I do not want to buy a phone and not be able to use it. I will be able to unlock it once I get it, though because I know I have to do that.
Will I still have internet on the iPhone 4 with my go phone plan? Texting?

Thank you

Added (1). I currently have a Go Phone plan with ATT and I do not want to change it to an iPhone plan.

Camwow pictures not working?

Every time I take a picture it always turns out black. I deleted it and redownloaded and it still doesn't work. This happened after I got the iPhone five update. I went into settings and have acess but it still won't work