How to know which capabilities a symbian v9.x exe has.

You can see capability information using petran tool provided with SDK.
you have to use > petran -dump s

exmaple:

C:\Symbian\9.1\S60_3rd_MR\Epoc32\release\GCCE\UREL>petran -dump s testUi.exe

PETRAN - PE file preprocessor V02.01 (Build 549)
Copyright (c) 1996-2005 Symbian Software Ltd.

E32ImageFile 'testUi.exe'
Secure ID: ecb33de7
Vendor ID: 00000000
Capabilities: 00000000 00010010
              ReadDeviceData
              WriteUserData