Also tried, with provided sample in Documentation. But no luck.
<syncfusion:SfTabView x:Name="tabView"
TabHeight="80"
BackgroundColor="#BEBEBE"
EnableSwiping="False"
VisibleHeaderCount="3"
Margin="0,40,0,0">
<syncfusion:SfTabView.SelectionIndicatorSettings>
<syncfusion:SelectionIndicatorSettings Color="Red"
Position="Fill"
StrokeThickness="4" />
</syncfusion:SfTabView.SelectionIndicatorSettings>
<syncfusion:SfTabItem>
<syncfusion:SfTabItem.HeaderContent>
<Grid VerticalOptions="Center"
BackgroundColor="#eea782"
HeightRequest="400"
WidthRequest="500"
x:Name="ChatsHeader"
StyleId="ChatsHeader"
HorizontalOptions="Center">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Label Text="James"
TextColor="Black"
FontSize="23"
Grid.Row="0"
WidthRequest="80"
HeightRequest="50"
VerticalOptions="Center"
HorizontalOptions="Center" />
<Grid Grid.Row="1">
<Image HeightRequest="100"
WidthRequest="70"
Source="a0.png" />
</Grid>
</Grid>
</syncfusion:SfTabItem.HeaderContent>
<syncfusion:SfTabItem.Content>
<Grid BackgroundColor="Yellow"
x:Name="FavoritesGrid" />
</syncfusion:SfTabItem.Content>
</syncfusion:SfTabItem>
<syncfusion:SfTabItem>
<syncfusion:SfTabItem.HeaderContent>
<Grid VerticalOptions="Center"
BackgroundColor="#C9EE82"
HeightRequest="400"
WidthRequest="500"
x:Name="ChatsHeader2"
StyleId="ChatsHeader"
HorizontalOptions="Center">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Label Text="Jacob"
TextColor="Black"
FontSize="23"
Grid.Row="0"
WidthRequest="80"
HeightRequest="50"
VerticalOptions="Center"
HorizontalOptions="Center" />
<Grid Grid.Row="1">
<Image HeightRequest="100"
WidthRequest="70"
Source="a2.png" />
</Grid>
</Grid>
</syncfusion:SfTabItem.HeaderContent>
<syncfusion:SfTabItem.Content>
<Grid BackgroundColor="Blue"
x:Name="ContactsGrid" />
</syncfusion:SfTabItem.Content>
</syncfusion:SfTabItem>
<syncfusion:SfTabItem>
<syncfusion:SfTabItem.HeaderContent>
<Grid VerticalOptions="Center"
BackgroundColor="#eedd82"
HeightRequest="400"
WidthRequest="500"
x:Name="ChatsHeader3"
StyleId="ChatsHeader"
HorizontalOptions="Center">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Label Text="John"
TextColor="Black"
FontSize="23"
Grid.Row="0"
WidthRequest="80"
HeightRequest="50"
VerticalOptions="Center"
HorizontalOptions="Center" />
<Grid Grid.Row="1">
<Image HeightRequest="100"
WidthRequest="70"
Source="a1.png" />
</Grid>
</Grid>
</syncfusion:SfTabItem.HeaderContent>
<syncfusion:SfTabItem.Content>
<ListView x:Name="ContactListView"
ItemsSource="{Binding ContactList}"
BackgroundColor="#cfead9"
RowHeight="100">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<StackLayout Orientation="Vertical">
<Label Text="{Binding Name}"
FontSize="24"
TextColor="Blue" />
<Label Text="{Binding Number}"
FontSize="20"
TextColor="LightSlateGray" />
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</syncfusion:SfTabItem.Content>
</syncfusion:SfTabItem>
</syncfusion:SfTabView>