I already developed a contact backup application and now i want to restore those saved contacts again to the phone. back up is saved in a remote MYSQL server. I did this to some extent. But i don't know what i did is really works in the real environment.
When restoring I send available phone contacts to the server and check that with contacts in DB. Then required action is taken as what to be newly created or updated.
it will be really helpful if u can give me the logic part of restoring. Thankz