What is best way to detect a 512 MB device

I'd like to turn of things off for 512 MB devices like the Lumia 520/521.

Is there an easy way to determine this programmatically?

 

Would SystemInfo.systemMemorySize be a reliable check to make on a Windows Phone? I really don't want to target a device type, I want to target all phones/devices with 512 MB (or less).

-Jeff

 

Came across this article: How to disable features in apps for lower-memory phones for WP8
http://msdn.microsoft.com/en-US/library/windows/apps/hh855083(v=vs.105).aspx/html

If you don't do it programmatically, you can make a restriction in Package.appxmanifest (WP8.1). This actually prevents the app from showing up on the Windows Phone Store if the user has a 512 MB device.

<Packagexmlns:m3="http://schemas.microsoft.com/appx/2014/manifest" m2="http://schemas.microsoft.com/appx/2013/manifest"xmlns="http://schemas.microsoft.com/appx/2010/manifest">
....
<Prerequisites>
<m3:MinDeviceMemory>1GB</m3:MinDeviceMemory>
</Prerequisites>

In WMAppManifest.xml (Windows Phone 8.0), add a Requirement:

<Requirements>
<RequirementName="ID_REQ_MEMORY_300" />
</Requirements>

http://msdn.microsoft.com/library/windows/apps/jj681682(v=vs.105).aspx/html

 

While it is possible to hide your app from 512mb users, I would advise against it. Many Windows Phone users have those types of phones, and not including them would be a bad idea.

There was a post on the Windows blog a while back giving some tips on how to optimize for low level devices. http://blogs.windows.com/buildingapps/2012/03/07/optimizing-apps-for-lower-cost-devices/

Other ways to reduce memory usage is to make sound files stream from disc rather than loading into memory and compressing images on the phone specifically for WP.

 

I check for device memory being less than 600 as someone mentioned above. Works great.

 

Yep, that's what I went with as well. Works perfect.

 

this solution doesn't work, try this one : http://sertacozercan.com/2014/12/how-to-opt-out-of-low-memory-devices-on-windows-phone-8-1/

it's working for me