I have been using my T610 purchased unlocked/unbranded from Manila for almost 2 weeks now with no problems using my Rogers AT&T sim card for voice but I have an issue with text messaging.
I am writing a new TEXT message (not email) and when I press 'continue', rather than asking for the phone number, the phone is asking me for an email address! Can't seem to fix this and haven't found any settings to change SMS preference from email to text another phone.
Also... GPRS FAILED is the message I get when I try to use the top right button. I've got my data account set up through the provider, who can't seem to help (can't tell me what's wrong) and neither can SE tech support or SE customer service!

::also:: my options under the Messaging->Text->Options submenu does not have any SMS type setting...

See More: Text messaging