If you mean to block them sending texts to you or calling you, you would have to call up your Network Operator as there is no inbuilt blacklist on the iPhone 4. There is a way if you have your iPhone jailbroken which would be to download iBlacklist but it does cost to download it and I don't recommend jailbreaking.
You don't have a reject list featured in an iphone .. However you can buy an application related to it & bingo your problem's solved :)
press the block button
You can find out more information on the iPhone 4 from friends, by asking someone at the store, or by looking online. I have unlocked the iPhone 4 by just asking friends and looking it up online.
An iPhone 4 is an iPhone.....
It is the 4th model of iPhone. But iPhone generations do not go from one up: 1. iPhone 2. iPhone 3G (because of 3G connection) 3. iPhone 3GS 4. iPhone 4. 5. iPhone 4S
Current, no there is not.
Yes
yes
call his/her mobile(iphone) or sms
No, they made the iPhone 4 case for a iPhone 4 not a droid.
No you both have to have an iphone 4 :)
iPhone 3GS. Then the iPhone 4 and then the iPhone 4S.