The BlackBerry PlayBook will come with WiFi and Bluetooth capabilities, but no built-in 3G modem. Instead Research in Motion has been promising that you’ll be able to tether the tablet to a BlackBerry smartphone to share a mobile broadband connection. But the folks at CrackBerry say that the tethering option will let you connect the tablet to any phone with tethering capabilities, not just a BlackBerry smartphone.
You will need a BlackBerry if you want to use the BlackBerry Bridge software which allows you to access calendar, contact, and email apps on the PlayBook. But if you just want to get online when you’re not near a WiFi hotspot, you can tether the PlayBook via a Bluetooth connection.
Of course, you can also enable WiFi hotspot access on many smartphones as long as you have a supported phone. This lets you turn an iPhone, Android phone, or other supported device into a sort of mobile hotspot for connecting any WiFi-capable device. But a Bluetooth connection offers a bit more security.