You might be familiar with the Samsung S7 Active smartphone, which both the manufacturer and its exclusive retailer, AT&T, advertise as being waterproof. Our phone-dunking colleagues down the hall at Consumer Reports tested that claim and found the S7 Active lacking, with two test phones failing after a simulated 5-foot dunk in a water tank. Yet it turns out AT&T employees aren’t aware of this issue, and owners of the phone won’t get a lifetime warranty for liquid damage. [More]