How to hide the phone and SMS of Xiaomi 2s mobile phone?

Xiaomi's SMS has the function of private SMS, but it can't hide the phone, but some third-party security software can hide the phone records.

The way to open private messages is as follows:

1, enter a short message;

2. Pull down the screen until you enter the private SMS interface;

3. Click Privacy Settings-Add Private Contacts to add.