I have a Cingular GSM Treo 650, and have had no problems with SMS until now. I can still send text, but it appears that it limits my text to 154 characters, not 160. Also, when I have it more than 154 characters, it gives me an error that reads, "An error occurred (4058) when sending this message. Please check the phone number or email address and try again." It also doesn't segment my text when it is more than 160 characters, like it used to do before.

I upgraded to 1.20-ENA. Am I missing a file? Someone suggested on another discussion that I should just trade it with a new SIM card, then reinsert my SIM, and it should work fine. I'll try that later today.

Any other suggestions?