Where can I buy a 2ndhand iphone
Hi You can get some good deals on 2nd hand iPhone models from Amazon or Ebay. Some people sell temporary unlocked iPhone models for more cost. Such iPhone models would get re locked on future iOS updates and it has to be unlocked again resulting in more expense. Instead you can get a network locked iPhone at low cost and unlock it yourself safer permanently.
To unlock an iPhone visit http://www.superunlockcodes.com/apple/rs16wp8/ and get the remote unlocking service. This method of unlocking is safe, simple, affordable, quick and permanent. It doesn't require a jailbreak too.
Ebay or Craigslist