Mobile Calendar Cutoff and unable to switch a month

The back buttons and first row of the popup calendar is not visible on some iPhones when the Zoom Mode is enabled.

Solution 1

1. Select the date field a second time and enter the date manually. Please use the format as setup in your user preference MM/DD/YYYY or DD/MM/YYYY

Solution 2

1. Go to your iPhones setting and disable the Zoom Mode.

https://support.apple.com/en-us/HT203332#:~:text=Turn%20off%20Zoom%20in%20Settings,tap%20to%20turn%20Zoom%20off.