Tính năng này có ích với cả iPhone và các dòng điện thoại Android.
Thường thì sau các vụ trộm hoặc vô tình làm mất điện thoại, bạn sẽ dễ bị truy cập vào các tài khoản mạng xã hội hay các email vì chúng ta thường cho phép đặt lại mật khẩu thông qua số điện thoại.
Mã đặt lại mật khẩu sẽ được gửi đến số điện thoại
Vì vậy, các đối tượng xấu hoàn toàn có thể lợi dụng việc rút SIM cắm sang máy khác để hack mật khẩu. Tuy nhiên, bạn có thể hạn chế việc này bằng cách bật mã PIN trên SIM.
Vào Cài đặt => Di động => PIN của SIM => bật PIN của SIM
Lúc này bạn sẽ được yêu cầu nhập PIN để mở khoá SIM (mã PIN mặc định) => đổi lại mã PIN mới
Mã PIN mặc định của:
– Viettel: 0000
– Vina: 1234
– Mobi: 0000 hoặc 1111
Trên tất cả các dòng điện thoại đều có hỗ trợ tính năng khoá SIM, vì vậy nếu như chẳng may bạn bị mất iPhone, hoặc bất kì dòng điện thoại nào khác việc SIM có mật khẩu sẽ an toàn hơn. Bởi vì mỗi khi khởi động điện thoại hay lắp SIM vào một thiết bị khác bạn phải nhập pin SIM mới có thể sử dụng dữ liệu mạng, các cuộc gọi, tin nhắn như bình thường.
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