iFixit, the trusty resource for tech teardown and repair, has put together a tablet repairability guide for its readers. Unfortunately for the home tinkerer, Apple's iPad has performed rather poorly. iFixit places a high value on tech that is designed with repairability in mind, where consumers can easily and cheaply repair their tech.
Out of a possible score of 10 for ease of repairability, the iPad 2, 3 and 4, and the iPad mini, came in with a score of 2, with the mini being nearest the bottom. Reasons for the low score are primarily down to excessive amounts of adhesive used and a high chance of cracking the glass during the disassembly, making repairs extremely difficult.
The only tablet to score lower than the mini is Microsoft's Surface Pro, coming in last with a paltry 1. Dell's XPS 10 came in at number one for being easy to open and using color-coded screws and labeled cables. The XPS 10 is also noted for having an easy-to-remove battery. Apple's first-generation iPad scored a 6.
For all the details, check out the iFixit's website here.