Cheap Kai OS flip phone review Vs. typewriter. Don’t buy Kai! They suck! 

@@tech-thscz they are constructed well enough, but the software is really laggy. I used it for phone calls, and it was super glitchy with the UI. Freezes, laggs, sometimes the ringer will keep going after answering a call until a hard reset is done, if a line called is busy it will keep playing a busy signal after hitting end and folding it up for at least a minute unless a hard reset is done