Bi-directional is a double-edged feature.

It means that there is no reliable way of identifying line and neutral wire, which requires more complex double switches downstream.

Also, F is unnecessarily clunky and big and hard to make a weather-proof version of because of the complex shape.

Misinformed, this.

I only got an Iphone because using Android was severely limited in China and iPhones just work[TM]. VPN use is everywhere and normal there.