Can notifying the other party to terminate the labor agreement by SMS be regarded as a written notice?

Labor relations can be verbal and so on. If the subject is an employer, it must be written, if the individual can speak orally, etc. , but it is best to write it out. Only the written notice of Hua 10 yuan EMS can be recognized when going to court.

Labor relations must be written. The mobile phone is personal, not the name of the company. The statutory notice must be given in writing 30 days in advance.