... customer satisfaction and customer loyalty toward each mobile operators in Vietnam, especially Vinaphone To find out the determinants of customer loyalty and to verify the model of Vietnam mobile ... nationwide with more than 200 transaction office. These transaction points are also the supporting point of Vinaphone. Besides the official transaction office, Vinaphone has thousand of retailers ... provider. The VAS services are divided into following catalogues: Voice VAS service include: short dialing, international call, international roaming, national roaming, call forwarding, call restriction,...