Yes in most population centers. Any country that has the ability to stand up a cellular network has the ability to deploy jamming at scale.
The components needed to build jammers and EW systems have been heavily commodified for a decade now (hell, your phone's power brick, car, and TV all have dual use components for these kinds of applications), and most regional powers have been working on compound semiconductors and offensive electronic warfare for almost a generation now.
alt Hacker News
Yes in most population centers. Any country that has the ability to stand up a cellular network has the ability to deploy jamming at scale.
The components needed to build jammers and EW systems have been heavily commodified for a decade now (hell, your phone's power brick, car, and TV all have dual use components for these kinds of applications), and most regional powers have been working on compound semiconductors and offensive electronic warfare for almost a generation now.