Whats the diference between Windows Mobile, smartphone, pocket pc and Windows CE device?

Windows CE is the underlying platform... Its used in a wide variety of applications and embedded systems. Normally its used as a building block for some sort of application. The Windows Mobile team, take the Windows CE, and add their own librarys, UI, applications drivers etc to make Windows Mobile.

Just to confuse things further, Windows Mobile comes in 3 'flavours' Windows Mobile Classic Is for Touch Screen devices that do NOT have any phone components. (Such as the aximsite.com Dell Axim) It was previously known as Pocket PC (Pocket PC is an older Version of Windows Mobile Classic) Windows Mobile Professional Is for Touch Screen Devices that have Phone capability (Such as the http://www.htc.com/www/product/touchpro/overview.html HTC Touch Pro) . It was previously known as Pocket PC Phone edition.

This is the most common version of Windows Mobile used today. Many Classic applications will run on Professional and Vice Versa. Windows Mobile Standard edition Is for Non touch screen phone devices... (such as the http://www.filesaveas.com/windowssmartphone.html Orange SPV 500) and was previously known as windows mobile smartphone edition.

Standard software does not work on Classic or Professional. From the above confusion you can get an idea that the Windows mobile team was not as focused as it should have been! This may change (or get worse) when windows changes the names again and unleashes windows phone!

Psionlady explained it really well. In short, everything you mentioned are in the smart phone category, to define a smartphone, it must have a Mobile Operating system that you can install applications onto.

Windows CE is an open, scalable, 32-bit, real-time operating system that can be embedded to build small footprint devices Windows Mobile is based on Windows CE, and different versions of it implement different CE features. Windows Mobile holds 2 categories: Standard Edition and Professional Edition. The Standard Edition is the simple version of Windows Mobile (that used to be called Smartphone), it doesn’t have a touch screen and its’ main role is to act as an advanced cellular phone with mail, web, and simple office capabilities.

The Professional Edition (used to be called Pocket PC) relates to more advanced PDAs that come with touch screen. Those devices hold an enhanced version of "pocket" Office, web browser, GPS navigators, and basically tons of available applications.

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