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Here's what I found on the verizon website about AppFlash...
https://www.verizonwireless.com/support/appflash-faqs/
I don't know that you can fully get rid of it - but I don't like it either.
I turned that off and put my calendar there. If I had any other issues I'd buy trying out a new launcher on the V40.
+1 on Nova Prime.