Nexus 4 Repairability Score: 7 out of 10 (10 is easiest to repair).

Removing the back cover requires nothing more than a common screwdriver, a plastic opening tool, and some patience.

The entire device only contains four different length screws—all common screw types—for a total of only 15 screws.

Once the back cover and inner frame are removed, pressure contacts make all of the inner components a breeze to replace.

The battery is stuck to the frame with a lot of adhesive, so removing it without puncturing the battery can be difficult.

The glass is fused to both the display and the display frame. So don't crack the glass unless you're good with a heat gun, or you're fond of replacing the glass, display, and frame together ($$$).