A review of the Palm Treo Pro smartphone has been posted over at MobileTechReview.com. 'The Treo Pro is an unlocked GSM world phone with triband 3G HSDPA that works in the US on AT&T and in Europe. Currently, there's no US carrier for the $549 Pro, so there's no carrier subsidized price. The good news is that you need not sign a contract if you already have a GSM SIM card (that means T-Mobile and AT&T in the US). It runs Windows Mobile 6.1 Professional on a 400MHz Qualcomm processor and it has 128 megs of RAM and 256 megs of flash storage. The Treo has Bluetooth, WiFi and an internal GPS. There's a 2 megapixel camera and an SDHC-compatible microSD card slot. Like the Treo 800w recently released on Sprint, the Pro has a 320 x 320 display but it has one wonderful improvement: a flush display with no raised bezel, which makes it easier to use the touch screen with fingers. The Treo Pro is Palm's thinnest phone to date, and it's the same thickness as the US unlocked GSM HTC Touch Diamond and the Sprint Diamond.'