From the Article (the actual notice): https://apps.fcc.gov/edocs_public/attachmatch/DOC-349258A1.p... They identified the device, and the service impairment stopped when he shut it off..

"On November 30, 2017, in response to the complaint agents from the Enforcement Bureau’s New York Office confirmed by direction finding techniques that radio emissions in the 700 MHz band were emanating from your residence in Brooklyn, New York. When the interfering device was turned off the interference ceased. You identified the device as an Antminer s5 Bitcoin Miner. The device was generating spurious emissions on frequencies assigned to T-Mobile’s broadband network and causing harmful interference."

> You identified the device as an Antminer s5 Bitcoin Miner

They only narrowed it down to his residence, then he himself said it's the miner. It's totally possible he used it as a scapegoat for something else he was running.

It says the person shut it off and claimed it was an Antminer s5, not that the FCC verified what was causing the interference. Was there some additional 3rd party confirmation of what it actually was?

Looks like AntMiner S5 runs at 350Mhz, and this interference is at 700Mhz. Also 700Mhz in cell phones is relatively new.