Just got this phone and love it so much, cool features and a lot of nice upgrades from my previous phone. Only thing I find a bit frustrating is that the Edge light notification is not available for all apps? I can enable it for WhatsApp but no option to add Facebook messenger to it. I would have thought a well-known app like Facebook messenger would be recognised and have the edge light available. Does anyone know if I can enable this for this app or is it just not available yet?