Mobile phone, acoustically and/or visually warns user before call is transacted or accepted with respect to contacts in telephone book or determined telephone numbers, and requests authentication from user for accepting call
摘要
<p>The phone acoustically and/or visually warns a user before a call is transacted or accepted with respect to contacts in a telephone book or determined telephone numbers, and requests an authentication from the user verbally or over key-pressing for accepting the call.</p>
