Can you jailbreak your iPhone 4 so that it will run on Verizon's 4G network?
Yes. They both use 30-pin docks.
I have an unlocked and jailbreak iPhone 3g 16gb and i want to know how to add music to it with-out loosing your unlock and jailbreak Can you use itunes and still know that everything will be ok?
I think you could but it may be better if you get dtunes from cydia or installous mainly because it free but a bit slow.
Do you get banned for jailbreaking your iphone some people say that if i did the jailbreak thingy the applestore will ban me is that true?
No, that is not true. Jail broken iPhones still have access to the Apple app store. The only thing it will do is break your Apple warranty on your iPhone.
How to Jailbreak your iPhone and use on T-Mobile network?
You can use your iPhone on a the T-Mobile network by jailbreaking your phone. Jailbreaking is a process of unlocking your phone to access other networks and applications.
Will any redsn0w work to unlock or jailbreak your iphone?
California, if you look on the back of any iphone or ipod it says its been designed in California and assembled in china since first gen ipods.