As it is also well known that Softbank has (or perhaps had) special policies for Zainichi, and the founder, Masayoshi Son is Korean-Japanese, so maybe Softbank just hates non-Korean foreigners.
After the launch of the original 3G in Japan, masonmark.com posted a funny, fuck-filled rant about softbank sucking entitled "My Japanese iPhone Sucks, wah", in which the the poster concluded that:
In the USA, AT&T kinda sucks. SoftBank, the Japanese carrier, sucks substantially more.
This post also contains sweet jems like:
The implementation of メール (mobile-to-mobile mail, extremely widely-used in Japan, kind of like SMS on steroids) is literally jaw-droppingly, staggeringly fucktarded and is the deal-breaker in Japan. No fucking wonder SoftBank has a “no-returns-even-if-it-doesn’t-work” policy here. Because it fucking doesn’t work, by any Japanese standard.
Its suck-level is such that SoftBank had to send out a text message to all iPhone users a couple days after the release, which basically said “Notice: The iPhone kludge for メール is tremendously awful. We humbly and deeply regret this inconvenience.”
Use of bold in the quotes is that of the OP. Read and enjoy.