Apple and SpaceX Link Up to Add Starlink Network on iPhones (2)

Apple Inc. has been secretly working with SpaceX and T-Mobile US Inc. to add support for the Starlink network in its latest iPhone software, providing an alternative to the company’s in-house satellite-communication service.

The companies have been testing iPhones with the Starlink service from Elon Musk’s Space Exploration Technologies Corp., according to people with knowledge of the matter. In an under-the-radar move, the smartphone’s latest software update — released Monday — now supports the technology.

The tie-up comes as a surprise: T-Mobile has previously only specified Starlink as an option for Samsung Electronics Co. phones, such as the ...