hi i currently have an 8310 from at&t and i'm switchin to 8330 from sprint cause i don't get signal in my house i dunno y. but i heard that the 8330 stops at 160 characters in each text is there a way to keep the texts coming like in the 8310 where you can have up to 600 characters (6 sms messages) is there a way to get around this?