But all those fancy phone features and apps require a data connection, which is included in your domestic phone plan but typically costs extra through roaming ... that turns cell signals into ...

Of course, if you're using apps that gobble up data while traveling in a foreign country, there's always a risk of racking up hefty roaming ... most phones. Without it, you couldn't get cell ...

In 2023, a group of researchers found a way to figure out a Signal user's location by measuring the time between sending a message and receiving a notification that a message was delivered. The method ...