Why You Can Trust CNET Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. How we test phones Who doesn’t want more battery life in their phone? This low-level feature works quietly in the background without you needing to do anything special. Jeff Carlson Senior Writer Jeff Carlson writes about mobile technology for CNET. He is also the author of dozens of how-to books cover...