Google looking into Pixel 2 clicking sound issue, offers temporary solution

Google has started an investigation into the "ticking" sound that's affecting certain Pixel 2 units. The issue recently came to light as owners of the smaller second-gen Pixel device reported hearing clicking and high-pitch frequency sounds during voice calls. 

A community manager at the official Pixel forum who goes by the name of "Orrin" said that Google is looking into the issue and offered a temporary fix:

We are investigating a faint, low-frequency “clicking” or “ticking” noise that a small number of Pixel 2 users ...