Like all the 5G networks debuted to date, T-Mobile’s service in Poland is starting within a limited geographic area, with plans to expand over “the coming months and years.” It’s currently being offered solely in central Warsaw. T-Mobile parent company Deutsche Telekom flagged Poland a year ago as one of its key markets and signaled that the country would be one of the first in Europe to receive a 5G network, according to VentureBeat.

Hundreds of flight attendants protested against United Airlines outside airports last Thursday including in Chicago, Houston, Newark, San Francisco and Honolulu. The airline plans to reduce staffing by one flight attendant per flight in its international business cabins. Meals will be pre-plated by caterers instead of by flight attendants. United CEO Oscar Munoz says the reductions will bring the airline in line with American and Delta.

General Electric is spinning off its GE Digital business and establishing an independent internet of things company, built around several GE Digital technologies, according to CNBC. The company will have a new brand. GE Digital CEO Bill Ruh has left the company, and GE said it will "conduct an internal and external search to identify the CEO for this new independent company."

Multiple NBA stars are bypassing deals with Nike for other shoemakers including Puma and New Balance. New Balance landed a deal with Kawhi Leonard last month after he turned down a multiyear contract worth $22 million from Nike. “The rush of upstart brands signing NBA players is a testament to the league’s ever-expanding popularity; even being tangentially associated with the league gives the brands some credibility with young consumers, they insist,” according to The New York Times.

"Johnson & Johnson's stock fell as much as 11% on Friday — on track for its worst day since 2002 — after a Reuters reportsaid the company knew for decades that asbestos was in its baby powder," according to CNN Business.The company's been fighting lawsuits alleging that talcum powder causes cancer, but the report "cites documents and other evidence that indicate company executives, mine managers, scientists, doctors and lawyers knew about the problem."

With Toys R Us gone, toy sales are up for grabs, and Amazon wants them. The digital-first company was already beating Toys R Us in market share, according to Wired. “And while it alone was not responsible for the demise of Toys R Us—poor business decisions and its sizable debt were also to blame --  Amazon did put intense pressure on the toy store chain with extremely low prices, especially during the past few holidays seasons.”

The National Institute of Health is conducting a $300 million study that follows 11,000 children at 21 testing sites across the country to assess how screen time, which includes mobile phone apps and video games, impacts their brain development and mental health. Researchers are noting significant changes in children’s brain development if they have more than seven hours of screen time a day.

"Winnebago, famous for its big, boxy motorhomes, is in the midst of a major makeover designed to appeal to a wider base of buyers," according to USA Today. "Case in point: Winnebago's new 19½-foot Revel motorhome represents a huge departure for a brand that has long specialized in serving silver-haired retirees."

Procter & Gamble has acquired the direct-to-consumer marketer Walker & Company, which owns brands that cater to consumers of color such as Bevel, a grooming line for men with coarse or curly hair, and Form, a label for women with textured hair. Walker & Company founder Tristan Walker will lead the company under the P&G banner, reporting to P&G's global haircare and beauty president Alex Keith, according to Fast Company.

The cyberattack on the Marriott hotel chain that collected personal details of about 500 million guests was part of a Chinese intelligence-gathering effort, according to two people briefed on the investigation, reports The New York Times. Geng Shuang, a spokesman for China’s Ministry of Foreign Affairs, denied any knowledge of the Marriott hacking. The Marriott database contains credit card information and passport data.