Apple is offering free repairs if your iPhone 7 won't connect to a cellular network

Apple is providing iPhone 7 owners with free repairs if they have one of the "small percentage" of devices that do not properly connect with a cellular network. 

The affected iPhone 7 devices will show "No Service" in the status bar at times even when cellular coverage is available in the area. The defect comes from a failed component on the main logic board, according to Apple's website. 

The affected devices were manufactured from Sept. 2016 to Feb. 2018 and were sold in China, Hong Kong, Japan, Macao, and the U.S., according to Apple.