How to distinguish between Windows Mobile 6.5.3 and previous versions at runtime?

Question

Is there an established or unofficial way to find out if my application works on a Windows Mobile 6.5.3 device or if it was in a previous version? Managed or native does not matter, and I do not mind interaction.

Answer 1

Since I need a reputation;)

Here is the information I found on the Internet:
How to detect Windows Mobile 6.1 (AKU Discovery)
AKU list on channel 9
Windows CE / Windows version

Answer 2

System.Environment.OSVersion

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Answer 3

Perhaps this example might help: