What do you mean by receiving date plus test information?

1, a test message sent by a mobile phone operator or service provider to confirm whether your mobile phone number works normally and your ability to receive messages.

2. Error information caused by system testing, such as Unicom background technicians mistakenly sending the information of business upgrade to users when testing information.

3. Sending error or system error. If you don't take the initiative to apply for or participate in any test activities, it may be an error or a system error to receive such a test message.