it depends which country you are in. For example in the UK you can either purchase a sim free iPhone or wait until your contract ends then have it on pay as you go (PAYG).
Yes
yes. eBay.
yes
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.
you just order by online
Yes, but you have to buy it at full price which is very expensive!
You can buy an iPhone without a plan, but you won't be able to text, call, surf the web, etc. I do not think that was his question , he want to know if he can buy a iPhone without a contract or a phone plan , the answer is yes you can buy one , you can buy it just about anywhere , the thing is you would have to get it activated by the provider , also it would need to be unlocked if not already , this means that it will work for any GSM carrier at&t tmobile etc , since you bought it outright without a plan that co should unlock it for you for free since you done that , most iPhones are locked to at&t from my experience , you have to call them and ask them to unlock your iPhone for another carrier , hope this answers your question
No.You can use an iPhone without a plan. Know that in order to not use a plan on your iPhone, you must purchase an unlocked iPhone which is normally priced $450 USD more than its contract counterpart in Apple Stores, AT&T, Verizon, Sprint, etc. Of couse if you are already in a 2 year contract and your 2 years are up (or you pay a heavy fee to ditch your contract), your iPhone will not have a plan but will still be able to function like an iPod Touch. The last was to get an iPhone with no plan is to buy a used iPhone 5 from someone who's contract expired (which won't really be possible until fall 2014).
No. You can't activate the iPhone without activating service plan. If you are just looking for the ipod and internet functionality, you should consider the iPod touch
No, because it is associated with APPLE you must but the whole plan because the phone will not work with the prepaid chip.
No, you have to get the Internet package.
The iPhone has its own Service Plan which has Internet included.