G1 smartphone is the latest collaboration between google.com, HTC and T-Mobile. It is 4.6 x 2.1 x 0.6 inch handset that will be available to the USA consumers on 10/22/2008.
There are several commonly found features among PDAs such as capability to view MS Word, MS Excel and PDF files. You will also be able to use IMAP and POP3 emails via smartphone application installed on G1.
There is also a GPS chip that will be used for GPS services. It uses cellular data for GPS navigtation and with full HTML Browser support, it will use Google Maps for rendering maps.
Google G1 is moderatley priced and will cost you around $20-$30 per month to use it on T-Mobile network.
Google G1 is also featured on google.com main website and you can see detailed offer for this phone by going to this url Google G1 Phone with GPS