Hello, I tried import FX Niagara particle system into the mobile project, content examples. I see the particle on the viewport, but nothing seen on the mobile android device. Does new Niagara support mobile devices?
I make a lot of research about that and on one of the streams from Epics, they say Niagara not supported on the mobile devices. On now 4.21. version. But in the future Epics will update Niagara and its great. Hope they make new documentation and more tutorials with new features on the new particle system. Thanks.
Same here,
researched a bit and it did not show up on mobile devices, now on 4.21.2. The 4.22 Preview 1 Release Notes do not say anything about support either.
Yes 
but i hope that Niagara will be work on the mobile devices.
Yes it works on mobile if you build it on vulkan for android and metal for iOS. I have tried android and it works on Vulkan.
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I’m running into an issue where GPUCompute sim particles won’t work on mobile in Unreal 5. When I go to the build for metal from windows documentation it says that isn’t supported in unreal 5 and on mobile builds none of my niagara particles are rendering… Using the Windows Metal Shader Compiler for iOS in Unreal Engine | Unreal Engine 5.4 Documentation | Epic Developer Community
Looks similar to this issue:
Does Niagara GPUCompute Sim work on mobile devices? - #3 by mixer76
Not sure what the path forward is to get GPUCompute sim niagara particles to work on mobile.