depending on what plan you go on could be between 30 and 70 pounds
It depends on the carrier. You can expect to pay around $69.99 for a monthly plan free that includes data, text and talk.
I am pretty sure that all American carriers selling the iPhone use monthly plans for data, text, and minutes.
i believe it is $700 to buy one unlocked directly from apple
Yes, its part of the $30-$35/month data plan.
It varies by carrier. For example, you pay full price for the phone with T-Mobile, but it amounts to a lower monthly bill.
iTouches do not need a monthly service plan since they only have wifi capability for connectivity. Only the iPad and iPhone are capable of connecting to the Internet using AT&Ts 3G network which would require a monthly service plan.
It depends on your carrier. If your carrier is AT&T, it would add a Data Plan to your bill without further notice. According to the AT&T website: "AT&T is Apple's exclusive carrier partner for iPhone in the United States. An eligible data plan for iPhone is required. This data plan covers data usage in the United States and does not cover international data usage and charges. If AT&T determines that you are using an iPhone on your account without an eligible data plan, AT&T reserves the right to add an eligible data plan to your account and bill you the appropriate monthly fee."
If you paid for the service warranty protection plan at the time of purchase, Apple will replace your phone.
AT&T does not offer the iPhone 4S without a monthly plan. There are pay as you go options for text messaging starting for 10 cents a text. However, the iPhone 4S has iMessaging which does not count towards text messaging.
It is $30
You can buy an iphone without the plan straight from Apple for about 400 USD, if you're not willing to pay that price you can check eBay or Craigslist. You might find a better deal depending on the generation or condition of the iPhone.
No. Verizon requires a data plan for iPhones.
The iPhone data plan is a requirement and this plan is $15.00/month for the DataPlus 200MB for iPhone or $25.00/month for the DataPro 2GB for iPhone, in addition to your voice plan and other features that you may choose. AT&T frequently runs a sweep of all of its accounts and if it finds an account with an iPhone and the iPhone data plan is not on the account they are adding it, no questions asked. Here is what AT&T says on their web site ... Please note: Data plan for iPhone is required for the life of your iPhone service and cannot be removed in the future. Data Plan for iPhone includes unlimited data in the U.S. Access rich HTML email and desktop-level web browsing, as well as Visual Voicemail to listen to voicemail messages in any order you choose. Please note: AT&T is Apple's exclusive carrier partner for iPhone in the United States. An eligible data plan for iPhone is required. This data plan covers data usage in the United States and does not cover international data usage and charges. If AT&T determines that you are using an iPhone on your account without an eligible data plan, AT&T reserves the right to add an eligible data plan to your account and bill you the appropriate monthly fee.