Starting with version 17.1.0.32 (2019 Volume 1), Syncfusion will no longer publish NuGet packages at NuGet.syncfusion.com. From version 16.2.0.46 (2018 Volume 2 Service Pack 1) on, all our components are available as NuGet packages at NuGet.org. Refer this KB article for more information.
Windows Phone 13.4.0.53

Syncfusion Essential Studio Windows Phone NuGet packages

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https://nuget.syncfusion.com/nuget_windowsphone/nuget/getsyncfusionpackages/windowsphone
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Windows Phone NuGet Packages

Version
Syncfusion Windows Phone 8.1 NuGet Package
File Size: 17.30 MB | January 14, 2016
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Syncfusion Windows Phone 8 NuGet Package
File Size: 6.20 MB | January 14, 2016
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