Hi Dieter,

As for ASP.NET Mobile controls (original MMIT), it has been tested against
some existing list:

#ASP.NET Mobile Control and Microsoft Mobile Internet Toolkit Tested Devices
http://www.asp.net/mobile/testeddevices.aspx?tabindex=6&tabid=44

for your problem, I think you can perform some test to see whether it is
specific to the certain device(and the browser on it). Since the ASP.NET
Mobile page and control will render different markup (html, xhtml or wml)
according to the client device, you can use some trace tools(http trace
utilities) to capture the response content of the page (with link button).  
And you can compare the markup between two devices , one work and one not
work to see whether there is any difference.  If the markup are identical,
it means the problem is specifci to the device/browser's support of the
markup.

Some common http trace tools are  TCPTrace, Trace utility .....

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.