https://www.neurology.columbia.edu/news/mind-reading-technology-can-turn-brain-scans-language

We already live in a world with existing, functional mind-reading devices. There is even a device designed to help people that are suffering from ALS communicate by reading their thoughts, and has a privacy feature where the user can activate and deactivate the device by thinking a password in their mind, in order to allow them to still have private thoughts.

https://www.scientificamerican.com/article/new-brain-device-is-first-to-read-out-inner-speech/

Phones are not fMRIs though.