Let us sustain the substantial hopes for the new 5G technological innovation to aid electronic transformation in Vietnam and likewise other world wide markets #Viettel #Goodbye_2G #technologywithheartLan t?a c? ??nh Lan to? di ??ng Lan to? thanh toán c??c Khuy?n m?i dành cho b?n D?ch v? doanh nghi?p Quay l?i D?ch v? doanh nghi?pSocial Obligation