The T-Mobile G1's vibrant, high-quality screen slides open to reveal a full QWERTY keyboard, great for communicating with friends online or using the phone's email, IM and mobile messaging capabilities. As another option for accessing the device, the T-Mobile G1 comes equipped with a convenient trackball for more precise, one-handed navigation. The 3.2-inch touchscreen has a 320 x 480-pixel resolution and a 65K color depth. The T-Mobile G1's touchscreen interface is unique, providing you with a more customizable, interactive touch experience. For example, you can set a signature gesture to unlock the screen (there are 30 million possible combinations). There are also different taps for different types of commands--for example, you can use a short touch to launch an application, or a long press on any screen will give you additional options, similar to that of a right click on a mouse.
The phone has an internal 192 MB RAM/256 MB ROM memory, and it's expandable via optional MicroSD memory cards up to 8 GB in size (a 1 GB MicroSD card comes with the phone).
Features include:
* 3-megapixel camera with autofocus for still photos (no video recording)
* Digital audio player with four categories (Artists, Albums, Songs, and Playlists) and support for MP3, M4A (iTunes AAC, DRM-free), AMR, WMA (8), WAF, and OGG Vorbis
* Use digital audio songs as ringtone
* Bluetooth version 2.0+EDR with the following profiles: HFP (hands-free car kits), HSP (communication headsets)
* Wi-Fi networking (802.11b/g)
* Messaging: email (IMAP/POP3/SMTP), instant messaging, SMS text, MMS photo
* Voice-recognition
* USB 2.0 connectivity with USB mass storage capability