Wirelessly posted (iPhone 4: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)
Sorry I did not tried this time as I get my japan colleague to help me on that. Btw I don't know f it's my card or my gadgets but signal reception is wired, no bar on my iPhone / iPad at 300kbps but my normal docomo phone has full bar.
works perfectly all the way to akita, amori, hakodate and Sapporo