If you own a Lumia 950 or [Lumia 950 XL] and are also signed up to get Insider updates on the Production ring, you might see a firmware update rolling out. Microsoft has announced that the 1078.38.16025 update is currently going out in certain markets. It offers improvements in GPS reliability and call audio quality, along with stablity fixes for those phones.
Full story from the WindowsCentral blog...