that all depends on the company they work for. some companies have very strict policies about talking on the phone regardless of having a Bluetooth or not.
Some of the types of different headsets include the regular headsets which you have to plug in to the device in order to use them; another type of headsets available are the wireless headsets, which allows the user to use them wireless.
Usually (I'd say 99% of the time) Bluetooth headsets will use the headset profile, so if your phone supports that profile (which it almost certainly does), you'll be fine.
Well the wireless headsets use bluetooth to send the information back and forth. You need Bluetooth to use a wireless headset but you don't specifically need to buy a Bluetooth brand. However, bluetooth is also used for file transfers like pictures from the phone, transfering ringtones and updating notes and calendars. Bluetooth is not just a headset you talk to in your ear. Bluetooth is the mechanism that allows wireless headsets to work.
Bluetooth will allow the use of wireless headsets as well a handy and quick way to share information between cellular phones that doesn't use data service.
Yes, all Bluetooth headsets work the same way. They are universal in terms that you can use it with any phone. I would recommend getting one that your carrier or cell phone maker recommends.
Most bluetooth headsets use a universal "0000" (four numerical zero's) for the passcode
Yes. Most headsets can do this.
no but you can use a bluetooth headsets on ps3 and xbox 360
By definition, Bluetooth is wireless, so no you cannot. There are USB headsets with cords that you can use with your PS3. The official Sony headset does have the ability to let you talk while it is charging in the charging cradle.
depends on which headset you are using. Bluetooth or wired? 360 Bluetooth headsets will only work for 360. Wired you can use for in out output using the right adapter plug-in.
Bluetooth is a wireless technology. Bluetooth Stereo basically means Wireless technology + Stereo = wireless stereo. :) Some Bluetooth headsets have stereo capability meaning that you can play music on your phone / mp3 player, etc (the device must have bluetooth) and you can use a bluetooth stereo headset to listen to the music from your phone,etc.
Most Plantronics Bluetooth headsets start with a pass code of 0000 (four zeros). Once you have paired up with your device that is bluetooth enabled that code is what you would use.