Joke Collection Website - Public benefit messages - Why can't I delete the message of 106909?

Why can't I delete the message of 106909?

10690, these numbers are called "telecom network code number resources" and are managed and approved by the Ministry of Industry and Information Technology. You can send short messages to private enterprises in groups. At the beginning of 1069, not only marketing messages are used, but also a non-profit organization will use this number to send messages. Any short message can be deleted. Delete individually or in bulk. There are three ways to delete: one is that batch deletion is definitely desirable, and the other is that you can use single deletion or click-edit-delete. Third, a message will be displayed below after long press. Click Delete and confirm the deletion. If it doesn't work, the most effective way is to add the numbers you often use, such as bank reminder messages, to the address book. Then set to block all non-address book numbers.