Something your smartphone often does is connect to Content Delivery Networks to get ads. Again, which networks it connects to, and how many, will depend on the apps you install.

In this Ask Maggie, CNET's Marguerite Reardon advises a reader looking to use a SIM card from a tablet to get data-only wireless service on his smartphone.

Our relationship with technology is more integrated into our daily lives than ever. In 2010, just over a third of American adults owned a smartphone; now the figure is more than 80 percent. But ...

The debate between the FBI and Apple over a killer's iPhone raises the question: What personal data is on your phone, and nowhere else? Consumer Reports explains.

Because satellite data are used by our phones to determine where we are, they don’t always get turned off, nor are they treated the same as location data.

Engineers allegedly catch AT&T calculating more smartphone data usage than the actual traffic warranted. Surprised? Don't be: it's business as usual.

More on-device AI could result in better data protection and improved battery performance, in its view — as a consequence of data being processed and stored locally. At least that’s the top ...