Anonymous15 I feel like maybe it’s not the back panel, there’s a gap between the transparent panel and the borders of the phone and it catches a lot of hand dust, you can use something thin to scrape that dirt off and clean it up
Anonymous717 SakshamYadav try to reach Nothing support team or Nothing store were you bought the phone maybe they can replace it if the phone is on warranty.
ChetanWagh SakshamYadav This is due to UV radiation. If you use nothing 2a or any phone with plastic transparent cover. Make sure to use cover.