What to choose for mobility, WAP, Smartphone or PDA?

Do I need a wap phone, internet browser capable phone, smartphone, pda or all of the above? It depends on how you plan to use a device.

If you want a quick way to check your emails, and weather a WAP phone or a phone with an internet browser is probably all you need. If you want to store contacts, calendar information, etc. You probably want either a smartphone or pda (personal data assistant). The difference between a smartphone and a pda is basically the smartphone is a pda with a cell phone included in the device.