What do a BlackBerry Priv, Galaxy S7 edge, Xiaomi Redmi Note 3, Alcatel Idol 4S, a Huawei P9, Honor 8, and an HTC 10 have in common? Well, they're all Android phones, of course, but they all lack a common feature: 'OK Google' hotword recognition while the screen is off (off the charger). In fact, this feature is so rarely found on Android devices that you can almost call it a Nexus (or soon, Pixel) exclusive these days. And even then, not all Nexus devices seem to be able to do it. The proper name for this feature is "always on."
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