AT&T, Verizon, T-Mobile, and other cell phone services are experiencing major outages across the country. Also, NBC’s Vicky Nguyen details what to know about hidden hotel booking fees before you plan your next trip. Plus, Your Health: With allergy season approaching, doctors are encouraging patients to get ahead of the annual sniffles and sneezes. And, Grammy winners Dan + Shay live in studio with a first look at the first ever chair for two on NBC’s “The Voice.”