Sony Ericssion P800
the Dream was the first commercially released device to use the Linux-based Android operating system.The operating system offers a customizable graphical user interface, integration with Google services such as Gmail, a notification system that shows a list of recent messages pushed from apps, and Android Market for downloading additional apps.
The StarTAC was among the first mobile phones to gain widespread consumer adoption; approximately 60 million StarTACs were sold.
They run Apple's iOS mobile operating system.The user interface is built around the device's multi-touch screen, including a virtual keyboard. The iPhone has Wi-Fi and can connect to cellular networks.
A full charge took roughly 10 hours, and it offered 30 minutes of talk time.It also offered an LED display for dialing or recall of one of 30 phone numbers.
B.B call just can use words and numbers to send some information to their friends.
Mobile Phones Evolutionary History
The Nokia 5110 was rugged, had excellent battery life, and featured an 84 by 48 pixel monochrome LCD with four LED back lights, operated by the Philips PCD8544 display controller.
The P800 uses the UIQ (version 2.0) user interface and has a touch screen much like a PDA. It is powered by an ARM9 processor running at 156MHz, which was also used for the successive models Sony Ericsson P900, Sony Ericsson P910. It came with a 16MB Memory Stick Duo but supports up to 128MB.
BlackBerry devices can record video, take photos, play music and also provide functions such as Web-browsing, email messaging, instant messaging, and the multi-platform BlackBerry Messenger service