Viettel is a telecommunications company based in Vietnam. As one of the leading telecom operators in the country, Viettel provides a wide range of services including mobile and fixed-line telephony, internet services, and digital solutions. Their subscription services typically offer mobile data plans, voice call packages, and broadband internet solutions. Additionally, Viettel is known for its initiatives in developing digital infrastructure and providing smart solutions in fields like agriculture, e-health, and industry 4.0.