2012: Nhà cung c?p d?ch v? vi?n thông t?t nh?t th? gi?i t?i các th? tr??ng ?ang phát tri?n – WCA.Research, improvement and trading in products and services in army cryptography and cyber info security.I do not know if It really is was the app or the net loading so slow. Continue to they both equally from viettel and i still vote one star for