Nexus 4 screen burn in issue
I've had my N4 since January, and I've noticed that I've started to suffer from a screen burn-like issue. I use Dolphin Browser, and use phase beam live wallpaper (purple one, not red). When I've used dolphin for a few minutes and return to my home screen, I notice that the refresh and '+' icon from dolphin browser are imprinted on the screen. It goes away after about a minute or when I reboot the phone, but I wondered if anyone knew why this would be happening or if there's any solution? Also, when checking my work schedule on Polaris office, I notice that the grid pattern from the excel file is imprinted on my homescreen for a few moments too. Do you think it is worth RMAing for a new device? Everything else is fine.
I'm running stock, unrooted.
Current device: Nexus 5 - simply amazing. The best.
Previous smartphones: HTC Desire, HTC Sensation XE, HTC One X, Samsung Galaxy S3, Nexus 4