Hello Klayton,

You can visualize the list picker popup using the control's toggle command. More details about List Picker commands - check the following link form our documentation: https://docs.telerik.com/devtools/xamarin/controls/listpicker/list-picker-commands

Example:

ListPicker definition:

    <telerikInput:RadListPicker x:Name="listpicker"/>

executing the ToggleCommand after the InitializeComponent method in the page's code behind.

Device.StartTimer(TimeSpan.FromMilliseconds(1000), () => {
    this.listpicker.ToggleCommand.Execute(null);

    return false;
});

I hope this will help.

Regards,
Didi
Progress Telerik