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智妙手机屏幕调暗真能省电吗

Smartphone battery down to 10 percent? Time to turn down the brightness on the screen, right? It's a classic strategy to squeeze more juice from the battery. And it works. But that trick might be less effective than you think.

智妙手机才10%的电量了?该把屏幕调暗了,对吧?这是争夺更多电量典范的方式,并且实在可行。但那招没你设想得那样有用。
Because it turns out nearly half the battery drain on a phone happens when the screen's not even on. So says a study presented at a meeting of the Association for Computing Machinery.
由于现实大将近一半环境是屏幕暗着,但电池仍然耗损着。美国计较机协会一次集会上宣布的研讨如是说。
Researchers eavesdropped on the activity of more than 1,500 Android phones—specifically, the Samsung Galaxy S3 and S4. They used an app they developed called eStar Energy Saver. The app logs the energy drain of the phone's apps and activities as they happen.
研讨职员用他们研发的eStar动力节俭助手监听了跨越1500部安卓手机的勾当——具体说来是三星Galaxy S3和S4。这个利用记实手电机池耗损环境及耗电时响应手机利用的状况。
They found that some 45 percent of the battery drain happened while the screen was off. A lot of that energy suck was apps updating in the background—downloading headlines and weather, while you're not actively using them.
研讨发明有约莫45%的电池耗损环境产生在屏幕暗的时辰。很多电量缺乏是由于利用在背景更新——比方下载标题、更新气候,而现实上你底子没一向开着这些利用。
And different versions of the same app require different energy supplies. For instance, some versions of the Facebook app were twice as energy thirsty as other versions. So app version choice could slow your battery drain.
另外,统一个利用的差别版本对电量的请求也不尽不异。举例子说,有几个版本的脸书用电量是其余版本的两倍。以是说,选好版本也能够减缓电池耗损。
But one of the most hidden energy draws, zapping 12 percent of the battery, was just cellular paging: the pings from a cell tower every 1.28 seconds, that tell your phone if a call or message is on the way. Which is, ultimately, the price of being connected.
但最为隐藏的电源耗损是蜂窝寻呼,能够用掉12%的电池,即手机旌旗灯号塔每1.28秒就发一次的声脉冲,提醒你来电或有短信。这归根结柢便是坚持通讯顺畅的价钱。



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