You can also prevent your device from using cellular data for FaceTime calls by opening Settings, tapping Cellular, and scrolling to FaceTime and toggling the green switch to the off position.

Personal hotspots are usually a free feature with most call carriers, though you will be on the hook for data usage when using cellular data. However, some carrier plans may charge $10 or more per ...

Researchers may have finally figured out how to decode cellular signals with unique devices that use light.

A hidden toggle hints that Google may eventually let Pixel users sync their notification statuses over cellular data.