I received the notification letter by SMS, and I don't know what platform.

Mobile phone information received a notification letter for no reason. First of all, you need to confirm the authenticity of the notification letter. There are some spam messages. After passing, you need to confirm the authenticity first. Secondly, you need to confirm whether the notification letter was sent to your real name or the owner who used this mobile phone number before, and then he didn't change his mobile phone number, so it was sent to your mobile phone.

It may also be false information. Once ignored, it may jump into the pit dug by the swindler.