De khac phuc loi "Khong co chung chi bao ve tren may hoactren Sim" cac ban hay download nhung chung chi duoi day ve va luu lai tren may! Download chứng chỉ Nokia Cac ban luu y, phai dung truc tiep trinh duyet cua may de download, khong dung trinh duyet Opera Mini hay cac trinh duyet khac!
