How to Fix Excel Formulas Displaying Incorrectly in Android and Google Sheets
Question details
Users are experiencing issues where basic spreadsheet formulas calculate correctly, but the resulting cell formats and special characters do not display properly when opened in mobile apps.

- Product
- Microsoft Excel, Google Sheets
- Device & OS
- Android
- Scenario
- Opening a desktop-created Excel workbook in Excel for Android or Google Sheets and encountering formatting or character display errors.
- Observed behavior
- Basic formulas work, but percentage-formatted cells revert to 'General' format on mobile apps, and cells containing specific characters like plus signs appear as black squares.
Verify that your spreadsheet is saved in the standard .xlsx file format and ensure your mobile spreadsheet application is updated to the latest version to maximize compatibility.
Diagnose and Fix Cell Formatting and Unsupported Characters
Identify and correct specific cell formatting issues and unsupported symbols that cause display errors on mobile spreadsheet platforms.
While standard mathematical formulas are universally supported, custom cell formatting and specialized font characters applied on a desktop may not render properly in mobile apps like Excel for Android or Google Sheets.
Create a new worksheet on your desktop containing only the affected formulas and some non-sensitive sample data to isolate the issue.
Select the cells with percentage formatting that revert to 'General' on mobile. Go to the Home tab, click the Number Format dropdown, and select the standard 'Percentage' option rather than a custom number string.
Locate any unsupported characters (such as custom plus signs that appear as black squares). Delete them and type a standard plus sign (+) using your keyboard.
Save the file as an .xlsx document, upload it to your cloud storage, and open it in Excel for Android or Google Sheets to verify the formulas and formats now display correctly.

Isolate the Issue Using Cloud Storage Sharing
Upload a sanitized version of the workbook to OneDrive or Google Drive to rule out local file corruption and safely share it for further diagnosis.
Experience Seamless Cross-Platform Compatibility with WPS Office
Avoid formatting glitches and formula display issues across devices. WPS Office offers a free, lightweight, and highly compatible alternative to Microsoft Office, ensuring your spreadsheets look and perform exactly the same on Windows, Mac, iOS, and Android.
- 1. Download WPS Office: Visit the official WPS website or your device's app store to download and install WPS Office for free.
- 2. Open Your Spreadsheet: Launch WPS Office and open your existing .xlsx file directly without any file conversion.
- 3. Edit with Confidence: Enjoy full support for Excel formulas and formatting, knowing your data will display consistently on all your devices.

Frequently Asked Questions
Why do my percentage-formatted cells show as general numbers on mobile apps?
Mobile spreadsheet apps sometimes fail to render complex or custom number formats created on a desktop. Re-applying the standard built-in 'Percentage' format from the number formatting menu usually resolves this issue.
Why do certain symbols or characters turn into black squares in Google Sheets or Android Excel?
This happens due to character encoding differences or unsupported font symbols in the mobile or web application. Replacing the symbol with a standard keyboard character fixes the display.
Are standard Excel formulas fully supported in Google Sheets and Excel for Android?
Yes, basic formulas like addition, subtraction, SUM, and IF are universally supported. Display issues on mobile devices are almost always related to cell formatting or unsupported text characters rather than the underlying mathematical calculation.




