[QC] Uu dai dac biet tu Viettel: 50.000d duoc 250p noi mang va 250MB (dang ky, soan DT50 gui 109) hoac 100.000d duoc 750p noi mang va 750MB (soan DT100 gui 109) uu dai su dung trong 30 ngay. Phi gui 109: 100d/tin. Chi tiet lien he 198 (200d/p). Tu choi QC, soan TC gui 199.