Do This Familiar to You?

Guess what this image is

Do the image above familiar to you?

At the first glance I enter my bedroom, this is the image I saw on my wall. It surprised me and looking at it, it felt so warm like you saw someone familiar you been missing for so long.

If you have figure out what it is, here is the hint. You saw this on your mobile phone, older type mobile phone of course. Well, it is the energy or signal bar in the older type mobile phone, way back to non-color screen. Gain back the memory? :P

Well, it is actually the reflection from the sun on my bedroom wall that made up from the grill and the curtain. Amazingly, it created such image on the wall.