A smart interactive voice response (IVR) system of the connection server configured to allow customized customer handling based on information known/gathered about individual customers. For example, based on matching the parameters of the current call from a mobile device with previous calls from the mobile device, the system may identify the identity of the caller, the identity of the callee, the language preference of the caller, the payment information for settling the cost of the current call, etc. IVR prompts can be customized based on the preference of the caller and known information about the call.