Why can't iphone4 delete SMS completely? . .

1, open the information in the mobile phone.

2. Click Edit.

3. Press the red button in the box to be deleted, and then click Delete.

4. Another method is to delete the content by sliding your finger to the right.

5. If you encounter multiple contents with the same number, but only want to delete a part, you need to press and hold the contents, and then click More.

6. Check the content to be deleted, click the trash can in the lower right corner and press Delete.