Xamarin Forms: how to hide back button title?

If you use Navigation Page, you can use an empty string for the Back button title:

NavigationPage.SetBackButtonTitle(this, ""); //Empty string as title

As far as I remember, it will affect the next page on the navigation stack (the page after 'this' will have an empty Back button title). Don't quote me on this.

You can completely hide the Back button with:

NavigationPage.SetHasBackButton(this, false);

Another option is to use a Modal page by replacing Navigation.PushAsync(yourPage) with Navigation.PushModalAsync(yourPage) which will present the page modally.

FYI, the back button is automatically populated with the Title property of the previous page (or it will default to Back if the Title was not set).

Adding to Cuckooshka answer, back button title gets hidden in landscape mode as

UIBarButtonItem.Appearance.SetBackButtonTitlePositionAdjustment (new UIOffset (-100, -60), UIBarMetrics.LandscapePhone);

There is also one workaround to hide back button title globally in whole application. Add in your AppDelegate.cs in FinishedLaunching method:

UIBarButtonItem.Appearance.SetBackButtonTitlePositionAdjustment (new UIOffset (-100, -60), UIBarMetrics.Default);