All four devices could crash in a crash investigation, but it may take a few weeks before they do, according to a new report.
The report from The Wall Street Journal says it is looking into the crash of a smartphone-mounted wireless earbuds device in a car in Florida.
That device could cause severe injuries.
The Journal report said that the incident happened in January 2016.
The devices can be used to control vehicles, and the Journal reported that one was used in a fatal crash involving a motorcycle last year.
The Associated Press was not able to independently verify the Journal report, which was written by a source with knowledge of the investigation.
The AP also spoke to a person familiar with the investigation who said the investigation was ongoing.
The device has not been found.
The investigation is still in its early stages, the Journal wrote.
It’s not known what caused the device to lose power and crash.
The article did not say whether the devices had been sold.
The Federal Aviation Administration requires all smartphones to have a separate battery and a radio transmitter that communicates with the devices, and this device did not have either.
The person familiar said the agency was investigating the crash.