I have tested the sample project on iPad and the Telephone keyboard is shown as expected. You can check the available keyboards provided from Xamarin.Forms Keyboard Class on the following link: Keyboard Class
. Indeed you can choose which keyboard type to set on the RadEntry control for the different platform's type. When keyboard type is set on Telephone for iOS, on iPad the keyboard looks like in the attached image -ipad_telephonekeyboard.png.
I hope the provided information was helpful. Let me know if you have any other questions.
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