There is usually at least WiFi everywhere you would reasonably expect to get an FM radio signal. When not on WiFi, even with capped data you can stream some for

There is usually at least WiFi everywhere you would reasonably expect to get an FM radio signal. When not on WiFi, even with capped data you can stream some form of audio. Barring that, you can store quite a bit of music on a smartphone, and get news in text form. Not much need for a radio on your phone.