Besides cultural opposition, Japanese citizens possess high, complex standards when it comes to cellphones. The country is famous for being ahead of its time when it comes to technology, and the iPhone just doesn’t cut it. For example, Japanese handset users are extremely into video and photos — and the iPhone has neither a video camera nor multimedia text messaging. And a highlight feature many in Japan enjoy on their handset is a TV tuner, according to Kuittinen.

https://www.wired.com/2009/02/why-the-iphone/