i downloaded and led indicator app that i swear and is amazing come with a variety of colours and works for any notification , my messages on is pink and it keeps on lighting up until i answer the text or read it and you can put how quick u want the light to show repeatdly . It's called Light manager here is a link https://forums.androidcentral.com/e...?id=com.koo.lightmanager&hl=en&token=pO7amux7