Symantec Mobile Security for Symbian 4.0 was designed for the following platforms
I belive the Nokia E71 is series 60 3rd Edition Feature Pack 1 running Symbian OS 9.2.
Symantec Mobile Security Corporate Edition for Symbian 4.3 includes support for Nokia Series 60 version 3 devices such as the Nokia E70.
While the E71 would not be a supported device version 4.3 of our product was tested on devices only a Feature Pack behind the E71 instead of a full version behind. While it has not been tested version 4.3 may be installable to the device.