A few weeks ago, the Google Duo team rolled out the option to place a video call through Assistant. All you had to say was "Ok Google, video call contact_name" and Duo would open up and make the call to that person. However, at the time, I thought the feature wasn't live for me. Assistant would tell me it's calling the correct person, Duo would open, but it would stay on the main screen, not placing the call. Clearly, something was amiss and I thought it was a bug that would be fixed with time. It wasn't until a few days ago that I figured out the reason it wasn't working: my contacts had their numbers either saved without a country code or with 00 as the international prefix.

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