.ECS File Extension
File TypeSony Ericsson Phone Backup File
This file is saved in a zipped format. You can view the contents by unzipping it with a file decompression program.
Backup data file created by Sony Ericsson mobile phones; saved in a compressed .ZIP format that can be read by phones using the Symbian operating system.
Data from a ECS file can be read on a computer by renaming the file extension from ".ecs" to ".zip" and opening the file with an unzipping program like WinZip. The file "filestore.dat.txt" contains an index of what is stored in the associated DAT files.