This application can directly import contacts to your device in a flexible mode.
It means that you can import files from old versions not-standard files and so on.
 
- You can use files 'txt' 'csv' 'xls'
  - You can customize the columns to be imported. Also files without headers can be imported.
  - Fileds separators can be customized

From rel. 6.2.0 you can not only import contacts but also replace or update existing ones.