UV Light on sister's phone; what's with the blue oval?
UV Light on sister's phone; what's with the blue oval?
![](https://yiffit.net/pictrs/image/3f90b92a-cd25-4457-92f7-fddc82339341.jpeg?format=webp&thumbnail=128)
![](https://yiffit.net/pictrs/image/3f90b92a-cd25-4457-92f7-fddc82339341.jpeg?format=webp)
Sister was messing around with a UV light and noticed this on her phone screen under it. My phone does not have this (all I get is a grid of dots I'm pretty sure are to do with the touch screen).