Until recently, Bluetooth headsets have mostly been used for voice calls which only require a low-bandwidth mono signal, and this is handled by devices supporting the Headset Profile or HSP. Bluetooth A2DP headphonesĮvery Bluetooth device supports a set of so-called Bluetooth profiles, which define the capabilities of the device.
At a pinch, if you have a phone like the N70, you might want to consider investing in an i.Tech headset and BluePlayer. However, it is locked down to work only with their i.Tech headsets, doesn’t allow other software on your phone (such as its native music player) to take advantage of A2DP, and only supports MP3 format files, not AAC, OGG or WMA. Note: MSI have an application called BluePlayer which is an MP3 player that will stream using A2DP from any Symbian OS phone. Make sure your phone supports A2DP before you blow your hard-earned cash on Bluetooth headphones! To get Nokia firmware upgrades not available from your operator or territory, see my article on changing your phone’s product code. Older phones like the N73 can be upgraded with A2DP by installing the latest firmware at home via the Nokia Software Updater (firmware versions 4.0726.0.1 and onwards for the N73 support A2DP), but S60 2nd Edition phones such as the N70 have no A2DP support. Of the Nokia N-series range, only the N91 8GB Edition and N95 support A2DP out of the box at the time of writing. This leads to a very poor 8kHz sound quality in only one ear (vs the usual 44.1kHz stereo for CD-quality sound) and is definitely not suitable for listening to music.
Most current phones (July 2007) don’t support the A2DP profile, which means they will use HSP (Headset Profile) to communicate with your headset instead.
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