Almost all electronic devices have a de facto "remote killswitch", as they usually have internet connectivity for remote support. That's why your vacuum cleaner can spy on you. 😅 

Why everyone outside of China buys Chinese electronic devices, is beyond me. One reason they're so cheap, is that the CCP heavily subsidizes them, to make sure we replace all of our western, Korean, and Japanese devices with theirs. 
Because reasons. 🤨 

Just hope they don't figure out a way to turn them all into bombs. Cuz that would be a mess.