I once supported an expensive application for Symbian OS and the customers had plenty of problems with Nokia smartphones. Not dumb phones, but smartphones. HW k

I once supported an expensive application for Symbian OS and the customers had plenty of problems with Nokia smartphones. Not dumb phones, but smartphones. HW keyboards failed constantly, wi-fi quality fluctuated randomly from piece to piece, displays developed weird errors, loudspeakers developed tin sound etc. Oh, and my favorite, problems with microUSB charging ports were eternal.