Sau day admin se huong dan cac ban cach goi dien free thoi gian ngan hay dai con tuy luc.Dau tiencac ban chuan bi mot cai sim conkhoang 200-300d goi la du de nhay=>Lap sim vao may=>Can than thao sim ra ma khong de may bi tat nguon (Da so may 1200,1208...deu lam duoc)=>An SDT va goi thoi.Admin chuc cac ban thanh cong !
