If the text is not dynamically changed, you could create the label line by line.
For example:
<StackLayout>
<Label Text="already synchronized at the factory"/>
<Label Text="which is confirmed by the fact that"/>
<StackLayout Orientation="Horizontal">
<Label Text="the icon"/>
<Image Source="wifi.png" HeightRequest="10" WidthRequest="10"/>
<Label Text="on the display does not"/>
</StackLayout>
<Label Text="blink. If it does, however, it means that"/>
<Label Text="a new synchronization is required. To"/>
</StackLayout>
Make some slight changes to the margin, padding, height or width to make it look good.
Hope it helps.