Thank you for contacting Syncfusion support.
Based on the provided information, your requirement of “Customizing the Calendar month cell with the images” in Xamarin.Forms can be achieved using CellTemplate property of MonthViewSettings and OnMonthCellLoaded event of Calendar. Using this event, you can get the Date and appointment details of the particular cell and you can set your desired customized view in the View property in MonthCellLoadedEventArgs argument.
We have prepared sample based on your requirement,
In the sample, we have set customized view using CellTemplate and get the values from OnMonthCellLoaded event. We have loaded date, icon to indicate appointment availability and appointments count in the particular date.
You can use either CellTemplate property of MonthViewSettings or View property of MonthCellLoadedEventArgs in OnMonthCellLoaded event of Calendar to set the customized view instead of date in month cell.
We hope this helps.
Subburaj Pandian V