Introduce a MaxLength property. 

An example of such a feature is the Xamarin.Forms Entry control's MaxLength property: 

https://docs.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/text/entry#limiting-input-length 

I'm particularly wanting the "Assistive labels" features, which comes from Material design (click in the textbox, and the watermark becomes a floating label).  Like this:

https://www.syncfusion.com/xamarin-ui-controls/text-input-layout

Add an optional Clear button to the Entry control, which clears the contents.   This can default to an "X" image, but there should be an option to apply a custom image.

Xamarin.Forms Entry with IsPassword=true does hide the suggestions

Provide a way to customize the return key on the soft keyboard when the control is focused

I would need to control when the overlay keyboard will appear, for example, hide it when the Entry gets the focus.

Provide a IsTextPredictionEnabled alternative for RadEntry

I would like to be able to invoke the Completed event from code. This request is to add a SendCompleted event like the Xamarin.Forms Entry has defined in the IEntryController.

Alternatively, you could make the RadEntry.InvokeCompletedEvent method public, but the SendCompleted approach is more aligned with existing code.

Add a password strength indicator/meter for the Entry control similar to the one in ASP.NET AJAX TextBox:

Demos: Telerik Web UI TextBox Password Strength Checker Demo | Telerik UI for ASP.NET AJAX

Docs: Telerik Web Forms Password Strength Checker - RadTextBox | Telerik UI for ASP.NET AJAX

On Android, when binding the Text value to a view model property, the value doesn't update.

Use the following to reproduce:

// VIEW

<Label Text="RadEntry" />
<telerikInput:RadEntry x:Name="MyRadEntry" 
                       Text="{Binding Username}" 
                       Margin="0,0,0,20"/>
        
<Label Text="Xamarin.Forms Entry" />
<Entry Text="{Binding Username}"/>

// VIEW MODEL

public class ViewModel : NotifyPropertyChangedBase
{
    private string username = "initial";
    private int counter;

    public ViewModel()
    {
        Device.StartTimer(TimeSpan.FromMilliseconds(500), (() =>
        {
            counter++;
                
            Device.BeginInvokeOnMainThread(() =>
            {
                Username = $"{counter}";
            });
                
            return counter < 100;
        }));
    }

    public string Username
    {
        get { return username; }
        set { username = value; OnPropertyChanged();}
    }
}


 Update: Available in R1 2018 SP release.

option to change cursor (caret) color of RadAutoCompleteView, 
RadEntry control

Currently, the keyboard is shown/hidden on GotFocus/LostFocus, provide a way to override the default implementation and manually control whether the keyboard should be hidden on LostFocus.