The T-Mobile G1 is the first phone from T-Mobile to run the Google mobile operating system, Google Android. The G1 has a touchscreen, as well as a slide-out physical keyboard. It offers features common to most cell phones, such as caller ID and text messaging, as well as advanced features such as Web browsing and navigation.http://www.wired.com/gadgetlab/2009/02/g1-phone-gets-t/ G1 is also capable of recording video, and has playback and sharing features.http://www.mahalo.com/t-mobile-g1

The newest version of G1, Android 1.5 (also known as the Cupcake) features new updates and offers users enhanced performance and UI refinements. It also allows for a greater number of folders and widgets on the home screen, for easy access to more applications than the original G1.http://www.android.com/releases/

Those who purchase a T-Mobile G1 cell phone can expect to receive a variety of applications pre-installed on to their device, including Google Search, Google Maps, Google Talk, Google Calendar and Gmail (email service which may be used with any Gmail address).http://www.t-mobileg1.com/g1-learn-faqs-phone.aspx

The G1 was unveiled on September 23, 2008 and went on sale to the public on October 22, 2008.http://blog.wired.com/gadgets/2008/09/since-apple-lau.html T-Mobile G1 (aka HTC Dream) Is the Official First Android Phone http://www.t-mobileg1.com/g1-learn-faqs-phone.aspxhttp://gizmodo.com/5053264/t+mobile-g1-aka-htc-dream-is-the-official-first-android-phone

T Mobile gave existing customers first dibs on the upcoming G1, and an estimated 1.5 million pre-orders were placed. The first batch of G1 phones sold out, though customers were still able to place pre-orders on the T Mobile site through the October 22 launch.http://gizmodo.com/5062688/t+mobile-sells-15-million-g1-pre+orders

Android, developed by Google, is the operating system that comes with T-Mobile G1 phones. It features the Android Market, which allows users to access and download numerous applications to use with their phones.http://www.t-mobileg1.com/g1-learn-faqs-phone.aspx While many of these apps are available at no charge, there is a fee to access some of the more advanced applications.

• Apple iPhone
• Research in Motion Blackberry phones
• Motorola Q
• Samsung Blackjack
• Palm Treo