How to preserve identifierForVendor in ios after uninstalling ios app on device?I am developing an iOS app which calls web-service for login and at that time i send login credentials to web server along with vendor identifier (identifierForVendor),to identify device uniquely for those credentials.So user can have only one device and one credential. I got identifierForVendor with NSString *uuid = [[UIDevice currentDevice] identifierForVendor].UUIDString This identifier will th
