Here is the recipient where you can add one or more contacts you want to send the message to. Select SMS option from the left panel to enter the SMS management window. This will select every cell in the worksheet.
If you are using Microsoft Excel 2013, then you can clear cell formatting using the steps in.
The method for performing this action in Windows versions of Excel is slightly different. Remove All Cell Formatting from a Spreadsheet in Excel 2011 The steps in this article were performed using the Excel 2011 application for the Mac operating system. Then you can start from scratch and format your cell data as needed for your current project.