treocentral.com — I saw that many TreoCentral users were having SMS problems in this thread - the issue seems to be that Sprint 700wx phones are unable to send text messages to non-Sprint phones. Incoming text messages from other carriers do seem to work. I confirmed that myself today.
Oct 19, 2006 View in Crawl 4
ryanredOct 19, 2006
This also happened with Nextel's blackberries.