Is it possible to deploy using Windows Store SDK on Windows Phone 10 ARM ?
I can only deploy for x86
You can for prototyping, but the current 10.2.7 SDK does not officially support Windows 10 Mobile.
To target Windows 10 UWP apps you should start using the new beta of ArcGIS Runtime SDK for .NET: ArcGIS Runtime SDK for .Net | ArcGIS for Developers
The commercial release is targeting later this year.
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