Assistant on Pixel 4 can take over calls while you're on hold - 9to5Google

According to a reliable source familiar with the company's plans, Google Assistant on Pixel 4 will be able to step in for you while you're on hold during a phone call. It's the latest feature Google is adding to make the day-to-day phone experience better on the Pixel using supplemental Assistant smarts… Whenever you're on a call with a business and end up on hold with music playing in the background, our source tells us you'll be able to tap a button on the display to tell Assistant you're on hold. You'll be able to then to take your attention away from the call, and Google Assistant will let you know when there's an actual human back on the other end of the call. Exact details of how it works is unclear for now, and we're told the feature is still relatively early in development, so it's likely that some aspects could change before launch. Our source tells us they're confident it will come eventually, but that they would be "surprised" if it's available on the Pixel 4 on day one.