I had several issues with this application that other reviewers described: Received "FAILED" message, although contacts were still available. Deleted all my groups, deleted the contacts in my chat list. Seems to have populated my "most contacted" list with randomly selected individuals. I imagine this is a consequence of using an idiotic "delete first" paradigm. Also, the "fix" for dealing with contacts without a last name was apparently to append a dash as the last name. So now I have several hundred contacts with "-" for a last name; very annoying. It seems to me that this application is awful, and should be scrapped our completely reworked.