Is this lawyer's letter received by SMS true or false? What should I do?

Fake. The above information can be described as full of loopholes and completely ignorant of the law. Lawyers can't say such things without basic legal knowledge.

Moreover, the lawyer's letter should be printed and sent by EMS, and this kind of short message will not be sent to you.

There are so many mistakes in this letter that the sender will not be a lawyer.