Unnecessary strip in xamarin forms - xaml

Question

When compiling on mobile, an empty line appears that is not in the code. Everything is fine in the studio in the designer, but on the phone everything is different. Where could the error be?
<Grid.RowDefinitions>
<RowDefinition Height="2*"/>
<RowDefinition Height="3*"/>
<RowDefinition Height="auto"/>
<RowDefinition Height="10*"/>
<RowDefinition Height="auto"/>
<RowDefinition Height="4*"/>
</Grid.RowDefinitions>
<Grid Row="0" ColumnSpacing="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="5*"/>
<ColumnDefinition Width="auto"/>
</Grid.ColumnDefinitions>
<Grid Column="0">
<SearchBar x:Name="SearchNickname"
BackgroundColor="{Binding BackColor}"
CancelButtonColor="{Binding TextColor}"
PlaceholderColor="{Binding TextColor}"
TextColor="{Binding TextColor}"
HorizontalTextAlignment="Center"
VerticalTextAlignment="Center"
Placeholder="Введите свой ник"
SearchCommand="{Binding SearchCmd}"
Text="{Binding SearchText, Mode=TwoWay, UpdateSourceEventName=TextChanged}"
MaxLength="100"/>
</Grid>
<Grid Column="1" BackgroundColor="{Binding BackColor}">
<Button ImageSource="https://assets.laut.fm/f69a3423e545055c32430e0a77ebe148?t=_120x120"
BackgroundColor="{Binding BackColor}"
Command="{Binding SettingsCmd}"/>
</Grid>
</Grid>
Where does this strip come from? enter image description here
Image in the designer studio enter image description here

Answer 1

That strip along the top is the Header/Navigation Bar, which you get by default in Xamarin Forms Pages. You can modify it or suppress it.