Trong tr??ng h?p b? h?n ch? truy c?p, b?n nên xem xét ??n vi?c ki?m tra ph?n m?m b?o v? và ph?n cài ??t b?o m?t c?a trình duy?t. Có kh? n?ng do c? ch? b?o v? c?a ?i?n tho?i nên ng??i ch?i s? b? h?n ch? truy c?p.The toughest faults to discover are those who take place only Every now and then—intermittent situations. They are often caused by