Generolo Jono Žemaičio Lietuvos karo akademija

4G has been developed in Vietnam for a long time with commitments to superior speed and interactions compared with 3G services from telecommunications service suppliers such as Viettel, VinaPhone, MobiFone, Gmobile. However, by now, the growth rate of 4G services in Vietnam still remains low and the services are not highly appreciated by users in comparison with some countries in the region and the world. It is therefore very necessary to identify factors affecting the decision to use 4G services. The article proposes a research model on factors affecting the decision to use 4G services of Vietnamese customers based on TAM model and previous research findings. The research model is set up to measure the factors affecting the decision to use 4G services of Vietnamese customers, so that suppliers can further develop their services to meet the demand of users and attract more customers. On the side of users, they can enjoy more conveniences that this advanced technology brings to their work, study and communication so as to raise their work performance and improve their quality of life.