This is a great way to determine which apps, or which features of particular apps, are causing the battery to die. (howtogeek.com)
Many require you to use particular apps that won't work with competing bulbs. (rismedia.com)
Select the apps that will have edge lighting flashes: If you want particular apps to use edge lighting, head into the settings as above and tap on edge lighting > manage notifications. (pocket-lint.com)