Basically, browser support conforms to "kintone System Requirements".

Mobile Browser Support

There are the following restrictions for mobile browsers on iPhone/iPad and Android.

1. krewSheet does not support operations in the plug-in setting screen. (support at runtime only)
2. krewSheet does not work in mobile versions of kintone. "kintone System Administration" - "Browse on Phones" must be set to "Show PC version".(You also need to set the browser to show websites for PC.)