The Smartphone is a Windows CE-based cellular phone.
Like the Pocket PC, all Smartphones regardless of manufacturer share the same configuration of Windows CE.
Also, Smartphones come bundled with a set of applications such as an address book, calendar, and e-mail program.
Microsoft produces a standard Smartphone build that individual manufacturers, and cellular providers can then enhance with branding and additional applications.
Smartphones have the following special features:
First, they are quite small, with screen resolutions of 176×220.
They do not have touch screens and have a limited set of hardware buttons.
Because Smartphones need to be on to receive calls, but also require long battery life, the CPUs used by these devices are slower than is standard in Pocket PCs.
Finally, because cellular phones are used by people while they are doing other tasks such as working, walking, or even driving, the user interface of the application has to be much simpler than is normal on a PC or a Pocket PC.
