Deadly Collapse at Amazon Warehouse Puts Spotlight on Phone Ban

An Amazon.com Inc. warehouse collapse on Friday night that killed at least six people has amplified concerns among its blue collar workforce about the return of the internet retailer’s mobile phone ban in work areas.

The warehouse in Edwardsville, Illinois, near St. Louis, was reduced to rubble when a string of tornadoes ripped through six states, leaving a trail of destruction that stretched more than 200 miles. Emergency responders expect recovery efforts to continue into next week.

Amazon had for years prohibited workers from carrying their phones on warehouse floors, requiring them to leave them in vehicles or employee lockers ...