You can able to show a Number keyboard for Numeric Columns by setting Input Scope property for SfNumericTextBox. InputScope property provides a type of text input expected by that control.
You can achieve this by deriving a new class from GridCellNumericRenderer and override the OnCreateEditUIElement method. By setting InputScopeNameValue as Number for SfNumericTextBox in OnCreateEditUIElement method, which shows NumericKeyboard when touch keyboard in Numeric Columns.
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