If you're thinking about buying the Treo 650 on telecom, or have already bought one, you need to beware of a few things.
First of all, the Treo 650 sold by telecom has the MMS capabilities LOCKED OUT. You CANNOT sent or receive photo/video txt on this device under Telecom.
No such restrictions exist on these phones on the US CDMA networks nor on Vodafone - this appears to be a Telecom restriction. The messaging app simply lacks the ability to attach a photo/video, and on receive, you get the "visit xtra & put in a whole lot of numbers to get your mms" txt.
Software versions for the messaging app appear identical between the phones with this function enabled and disabled, so it looks like Telecom flipped a setting here, or removed some underlying library file. It's not clear whether a user fix is possible, even with a reflash.
Telecom support is as usual struggling to maintain an upright posture, so don't expect much help there... It wouldn't hurt to call them and complain about misleading the customers tho. In fact - please do so!
Secondly, as an owner of a Treo, you will soon become familiar with an unnerving reset on incoming calls. Your Treo will suddenly reset itself, following which you will find a new voice mail. The phone resets itself rather infrequently IN GENERAL. However, on CDMA networks this happens FAR TOO OFTEN (daily), there appears to be a significant bug in the Treo software - you can get the reason for a reset to see this first-hand.
At any time, open the Dial Pad application, and enter #*#377#. This code displays the last reset error message. Chances are you will see:
HtcCDMARadio.cpp: Line:51, CRC check failed
Yup. Welcome to Telecom, mate. This one is a bugger because you will miss calls owing to this error. If your phone is turned to quiet mode you may never even know that calls are coming in while the phone merrily reset itself! Again, Telecom support response is a "duh..." The usual answer here is - oh, it's the software on your phone - well, this happens to fresh, out-of-the-box phones as well.
The saving grace is that resetting the phone (as in power off/on) seems to make this problem go away for a little while. The long term solution - keep bugging Telecom every time this happens to you. You will NOT see a fix for this unless Telecom gets to feel some pain here.
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For those of you reading this and getting cold feet about buying a Treo on Telecom, keep in mind that this is still the best PDA/cell combination out there. The palm interface is far more useable than Windows Mobile (the "mobile" outlook app is horrible!), the sync with your Outlook/Notes/whatever works well (unlike the junk Nokia software), and there is a ton of software for it.
Vodafone is MAJORLY missing the boat here.