mms can contain much more data that a text. cricket limits there text to one page. the razr is set to not try to send more than one page, that is whyt with really long messages you get the error that the message is too long. the problem with the razr is that it measures the page size a little differently, thus there is a small margin where the phone will allow it but the network won't, and thus you recieve an error while sending the message.