A look at the challenges Apple is facing as it develops its own wireless modem, expected to replace Qualcomm chips in 2023 iPhones (Christopher Mims/Wall Street Journal)

Christopher Mims / Wall Street Journal:
A look at the challenges Apple is facing as it develops its own wireless modem, expected to replace Qualcomm chips in 2023 iPhones  —  A series of moves by the tech giant, as well as signals from its suppliers, make clear that it aims to start designing the modems of the iPhone, iPad and Apple Watch.