I am considering getting a iphone but i have some questions 1. my family is on verizon and i heard that verizon has no sim cards is this true? If so can i still use it on verison? 2. How much will it cost to have 3g? 3. Will I have to buy one thats on 0.28 or can i downgrade? 4. can I use firmware 2.2.1? 5. can it be jailbroken?? 6. whats the difference btw unlocking/activation? guess thats it thx!