ANI service is an easy way for people to save long distance bill. Customers need to register the calling numbers into the phone system first, then later each time before making long distance calls, need to dial a local phone number first. Customers can check Call detailed Record online and make prepayment online by credit card. To use CIK Cell phone long distance service, it is recommended to ask your cell phone company to disable the long distance to avoid long distance bill by mistake.