How to set the mobile dual standby of Samsung Tianyi Telecom to prevent SMS calls?

According to your description, since you didn't provide specific model information, if you customize your mobile phone for telecom, the method is as follows:

① application >; When VIP mode > mode > click VIP mode open > open, the shield+microphone icon will be displayed in the upper left corner of the notification bar.

② Click the mode below.

1 enter > call/information restriction > close/reject all/reject blacklist only/receive whitelist only/accept contacts only > click the check mark in the upper right corner to save.

(3) click on the blacklist above > click.

Add contact > enter the number to reject > click the checkmark to save.

Blocked SMS messages are located at: Application >; VIP mode > screen record > click open record > click the time below to view the contents. This is in screen record > menu key > recovery > check the message to be recovered > recovery. You can restore short messages to messages.

Samsung knows to provide you with high-quality solutions and answer your questions attentively, hoping to get your satisfactory evaluation.