Nokia Lumia 900 001If your Nokia Lumia 900 has been afflicted by a strange purple hue in low light conditions, or perhaps dodgy proximity sensor performance, a fix is being rolled out as we speak. "This update represents part of Nokia's commitment to ensure a positive Lumia experience," a Nokia spokeswoman said. The fixes can be downloaded through a Zune update on PC or Windows Phone Connector for Mac. The update is also introducing "minor adjustments and enhancements," with more surprises to hit in the future, Nokia said.