[BB10fanatic]

BlackBerry Z10 Teardown - iFixit

[BB10fanatic]

Below is a summary of their findings.

BlackBerry Z10 Repairability Score: 8 out of 10 (10 is easiest to repair)

The battery can be replaced without any tools.
Motherboard and display come out with little difficulty, and are held in place with little adhesive.
Standard screws are used throughout the device.
Although the display assembly comes out fairly easily, the LCD is fused to the glass, increasing cost of repair.
Smaller components (headphone jack, camera) are modular and can be replaced individually, but have somewhat strong adhesive holding them in place.

[BB10fanatic]

HTC One 1/10 score!

HTC One Repairability Score: One out of 10 (10 is easiest to repair)
Very, very difficult (possibly impossible?) to open the device without damaging the rear case. This makes every component extremely difficult to replace.
The battery is buried beneath the motherboard and adhered to the midframe, hindering its replacement.
The display assembly cannot be replaced without removing the rear case—this will make the most common repair, a damaged screen, nearly impossible.
Copper shielding on many components is difficult to remove and replace.
Solid external construction improves durability.