![]() ![]() Duo tries to switch between Wi-Fi and cellular data automatically without dropping your call. The handoff between different networks was also given a lot of thought. When the network quality gets really poor, Duo will fall back to just audio. In fact, you can manually turn this on: A “limit mobile data usage” option can be toggled to restrict data usage on cellular networks, lowering video resolution but consuming less data. That means when bandwidth is limited, Duo will reduce the video resolution to keep the call going smoothly. To keep you connected, Duo adjusts call quality based on changing network conditions. A lot of time was spent on ensuring the call will degrade gracefully when packets drop, for example. Speed and reliabilityįox explained that the team worked hard to understand different network topologies. In short, if you can’t see yourself, the person you’re calling also can’t see you.įox noted that Duo started out as an app offering a “great quality experience on Android” that “takes the complexity out of video calling.” But in order to achieve the latter, the team decided it needed to build an iOS app as well. A neat thing I noticed is that if you navigate away from a call, the video will stop. It takes one tap to get into a call, one tap to answer, and, in general, everything is focused on getting you into a call as quickly as possible. “The UI is the person you’re talking to,” Fox declared. That’s why it is phone-number based, there is no need for a new account, and the user interface is very straightforward. The team’s goal was to make the calling experience as absolutely simple as possible. Fox took some time to detail the three areas that his team focused on when designing Duo. Both apps are coming out of the Communications product team formed almost two years ago under vice president of product management, Nick Fox.įox explained that Duo is launching ahead of Allo because development for the former actually started first. And no, Duo doesn’t use your Google account in any way, according to Google.ĭuo, along with messaging app Allo, was unveiled at Google’s I/O 2016 developer conference and made available in private beta (the number of testers is “in the thousands”), with a promise for a summer launch. You don’t need to create a separate account, nor do you need a Google account. Google said it would make App Preview Messaging available to all developers after an initial preview program, but that's yet to happen.To get started with Duo, all you need is a phone number. The App Preview version lets you do pretty much everything the Allo app lets you do, including responding to messages and changing the size of text. It's worth noting that the App Preview feature only works on Android devices, and only if you've added your phone number to your Google account and enabled App Preview in Settings.Īllo's supported App Preview Messaging since 2016, interestingly. Recipients of the call even have the option to block the caller from contacting them again once the call ends. All the features of a normal video call and audio call such as Knock Knock, mic muting, and camera switching are present on and accounted for on the App Preview version of Duo. People who don't have Duo installed on their Android smartphone experience calls just like Duo users. To make this happen, the search giant's using a Google Play Services feature called App Preview Messaging, which launched alongside Allo, Google's text messaging platform, in 2016.
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