DoubleCheck 1.0 for iPhone: Portability Unveiled - Know More, Pay Less
DoubleIP S.A. today released DoubleCheck 1.0 for iPhone. The application enables users to check the current mobile operator of their contacts and provides a simple one step mechanism to mark this info on their address book. Portability is unveiled and available on iPhone screen whenever a user places a call or sends a text. DoubleCheck is a remarkable tool, helping users reduce their communication costs while at the same time exploit the usage of their free call/text plans.
http://prmac.com/release-id-14971.htm