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Hardware incompatibility between Nokia and iPAQ may cause Bluetooth problems
Posted on 12-Apr-2004 23:26. | Tags Filed under: News.

Some users have found that pairing some iPAQ models (h1940 and 2210) and Nokia mobile phones (6820 and 6230) is impossible. The reason for that lies on hardware rather than software. A Technical Note from Widcomm alerts about this problem.

The "Technical Note Interop Issue between iPaq 1940/2215 and Nokia 6820 Phone", # BTW-PROJ-TECHNOTES-040218-1545 was issued to inform users about this problem.

If you have problems performing pairing between an iPAQ 1940/2210 and the Nokia models cited and continually get an error similar to "Cannot pair devices for security reasons" then it's related to the problem outlined in that document.

This is a Hardware issue and not a software issue related to the WIDCOMM BTW-CE Product. There are two types of keys that can be used for pairing:

- Combination keys
- Unit keys

The key type that is used is pre-set in the Bluetooth Radio Firmware. The WIDCOMM BTW-CE Bluetooth software
does not control this setting. The radio on the iPAQ 1940 uses unit keys by default. These Nokia phones reject the use of unit keys in pairing because it is not as secure as combination keys.

Users of older HP iPAQ models should check the HP Drivers page for the latest OS or Bluetooth software for their devices.

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