Company servers, PCs, and landline phones are clearly business equipment, as they're selected, provisioned, installed, and serviced by the company or service contractor for business purposes only. The user has no claims on these devices.

Eyeglasses, clothing, jewelry, wristwatches, heart pace-makers, hearing aids, wallets and other personal devices are the personal property of each employee. The company has no rights over or claims to any of them.

In ancient times (the 1980s and 1990s), cell phones were rare and expensive. If a company wanted executives or sales people to have cell phones, they had to be provisioned. As phones gained more capabilities and began resembling PCs, IT departments treated them as such. Like PCs, phones were (and still are) purchases based on company criteria, and for company purposes of security, data and application access and serviceability.

The industry has responded with all kinds of back-end solutions to facilitate corporate objectives. Companies like Palm, RIM and Microsoft and many others have developed phones, server software and other products designed to support the notion that a phone is a business tool to be provisioned and supported like a PC.