Select the language of exporting excel file:
2. Export all fields
On : all contact properties will be exported to contacts.xls
Off : only not-null properties will be exported to contacts.xls
3. Export photos
On : Contact photos will be exported
Off : Don't export the contact photos
4. Prefix of the file name
Add the string you enter here before the filename of export file
5. Order by
Set the sort order of contacts in the export file.
6. Delete all contacts
When you tap this setting and confirm it, the app will erase all contacts on your Phone.
7. Delete all groups
When you tap this setting and confirm, the app will erase all groups on your phone. But all contacts will still remain on you phone.
Set or change your dropbox account here for exporting or importing contacts.