Free my iphone 4 to use with vodafone or tmobile when i'm in europe?

JACK

Anyone know how i can unlock my iphone 4 to be able to use it while i'm in europe for vacation? I don't want to pay at&t

owen

I think at&t charges 20$ to unclok your iphone 4. You can also use this unlock code generator

http://networkunlock.org/iphone4/

i used it to unlock my girlfriends iphone about 2 weeks ago

My iphone is syncing to Vodafone in europe automatically? How? I'm in Germany and didn't pay to use my iphone overseas, i figured id just use Wi-Fi to send emails when necessary however when i landed my txting still worked and my phone showed that i was hooked up to Vodafone.de automatically? I was wondering if every time i send/receive a txt my bill is being charged or if it may be free?
How to use my iPhone in Europe? Once I land in Europe, what settings on my iPhone need to be activated in order for me to use it without being charged roaming charges?
How to unlock iphone 4s on vodafone for free? I need to unlock my phone however its locked to TalkMobile (which is basically vodafone) but they charge ridiculous prices… I heard you can do it yourself for free but how?
How to text for free using tmobile on vacation in Europe? I have an iPhone 4 & live in illinoise at the moment, I'm going to Poland on vacation for 3 weeks. I was wondering how I can text for free while I'm there, do I need to buy a new phone? Monthly plan? New sim? I know I can down load free texting apps but i don't know if that will work.