I'm not familiar with that era, but I think cell phones back then were more focused on hardware and brute-force style development than sophisticated software. I

I'm not familiar with that era, but I think cell phones back then were more focused on hardware and brute-force style development than sophisticated software. It's unbelievable how tough it was to survive the NTT Docomo's R&D center, YRP. Depression and suicides were sadly common, which caused a lot of Japanese to avoid the IT industry for years...