Add a comment to a cell

Comments include the author’s name and the date and time the comment was written.

Select the cell you want to add a comment to, then tap Comment.
You can’t add a comment to a blank cell.
The first time you add a comment, type the name you want to appear in your comments, then tap .
Type the comment in the box, then tap outside the comment to close it.
Cells with a comment have a colored corner. To read a comment, tap the cell, then tap Comment.