Among Xiaomi's contacts, the SMS sign is blue, but the dial sign is gray.

Hello, it's all gray, but Xiaomi's mobile phone has the network short message function, and the contact short message symbol is blue, which means that the other party has also opened the network short message function. Sending a short message to the other party in a networked state does not charge the operator a dime, which is equivalent to deducting the short message sent by a friend, and only needs traffic, and the operator does not charge.

Satisfied, please adopt.

If you are not satisfied, please ask.