https://www.vice.com/en_us/article/g5q7kx/facing-protests-amazon-makes-cell-phone-access-at-warehouses-permanent

Amazon announced to its employees Wednesday that it will allow its warehouse workers to keep their cell phones with them while they work, weeks after workers at an Amazon warehouse defeated Amazon in a union drive in New York City by more than 500 votes. 

“We recognize the desire for employees to keep their mobile phones with them inside facilities, and the last two years have demonstrated that we can safely do so,” an internal notification on Amazon’s scheduling app obtained by Motherboard read. “Therefore, we are making the temporary phone policy permanent wordwide, in all of our Operations facilities.”