cac ban co biet lam cach nao cho dt noi chung va lg km900 noi rieng xai on dinh hon . may nhanh hon hay la gi do dai loai nhu vay , y minh hoi co phan mem nao cai cho dien thoai . hay chay lai chuong trinh j do .vvv ko ? mjnh len mang thay nhieu dang update firmware minh ko hieu . ban nao gup dum voi