Isn't there still a 160 char limit as well? I thought the support for longer SMS protocol messages these days was just multiple messages in the background. Wikipedia still just says "Larger content can be sent using multiple messages".
It's 160 chars over 120 bytes using a special 7 bit encoding. However, if you fall back to ASCII it's 120, or if you're using a wide character encoding it drops to 60. But as someone else says we have concatenated SMS these days to cater for the longer messages.