Dear Murat,
Here is an excerpt from the Syntax Assistant's help topic on the SystemInfo.PlatformType property:
<<SystemInfo
PlatformType
Usage:
Read only.
Description:
Type: PlatformType; Undefined.
The current platform type.
Availability:
Thin client, web-client, Mobile client, server, thick client, external connection, Mobile application (client), Mobile application (server).
Note:
If the platform type differs from the PlatformType type in the web client mode, contains Undefined.
Contains Undefined if the mobile 1C:Enterprise is used. >>
So, by using this property, you can at least learn whether the application's 1C:Enterprise platform runs on a desktop OS or on a mobile OS.
Best regards,
Vladimir Gurov