Similar to an email mask, a phone number mask is a phone number that can forward texts and calls to your true phone number without revealing what your true number is to the person calling or texting you.
与马甲邮箱类似，虚拟手机号可以将短信和电话转移给您的真实手机号，不让给您打电话及发短信的人得知您的真实号码。