[vbezhenar]

My iPhone 4S has 0 moving parts, yet it had failed WiFi after 1 year. My Macbook has 0 moving parts, yet it had failed SSD. My Renault Logan has quite a lot of moving parts, yet I use it for a few years and almost 100 000 kilometers (and that's quite a lot of movement in extremely different weather conditions, from -40 to +40) and I had very minimal maintenance outside of regular oil change.

While I generally agree, the point is, even when there are no moving parts, there's a lot of failure points (temperature, vibrations) and manufacturers will create faulty devices, no matter what. If device is too good, they will cut expenses, until it'll be "good enough".

[Spooky23]

The MTBF is way lower. I've done this analysis for racks of server equipment and client devices. Failure rates are way lower -- low enough at scale to spend extra money on desktop SSD for low end use cases.

That said, environmentals are important. Hot solid state electronics fail.

[mrdavid]

The iPhone has a home button, power button, and volume buttons that all move. The Macbook's keyboard is comprised of moving parts. There's also the screen hinge which used to be a very common point of failure in laptops.

[zimpenfish]

Minor nit - the iPhone 7 doesn't have a physical "home button" - it's a force-sensitive area with haptic feedback.