xin moi nguoi chio giao <em moii tap toe dung bb nen ko biet thuc hu the nao em muon hoi cac cao thu chut .em dung bb7730 nghe moi nbguoi bao uprom the nao y,nhung mo mai ko dc ai biet cach chi ro ho em.ma phai down phan mem nao nua cac bac 4.1 hay 4.0
