iPad 2, 3 & 4

If you're looking for a used iPad, you have three options: iPad 4, iPad 3, and iPad 2. Despite the release of the sixth generation iPad, Apple continues to produce and support the iPad 2 as a cheaper entry-level model. The iPad 3 represented the biggest upgrade to the iPad since Apple introduced the original model in 2010, with a faster processor and a new high-definition (HD) display leading the list of improvements over the iPad 2