Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Bobbie,
You may follow the below steps and check if you can find the h:mm format.
- In the Excel spreadsheet, click on the symbol A in the file ribbon.
- Now scroll and select Format Number.
- Now you should see an "Time" option, click on the right arrow.
- Check if h:mm format is available.
Please be informed that custom category option is not available in Excel mobile. If this is feature that you would like see in Excel mobile app. You may please provide feedback in the Excel user voice section.
https://excel.uservoice.com/forums/304939-excel-for-android
Thank you.