How to delete the SMS record of Unicom business hall

You don't have to go to Unicom's business hall, you can also delete the call records and text messages yourself, find the calling number you want to delete, press and hold this number, and several lines will appear. If you have deleted the call record, you can click Delete. The same is true of text messages. If you hold down the text message, the word "Delete" will appear, and then click "Delete".