手机总是很快没电 送你一些省电妙招2

5. Turn off wireless when reception is poor.

5. 信号弱的时候关闭无线网络

You may have noticed that when you’re in a place without good Wi-Fi or cellular coverage, your phone’s battery seems to drain much more quickly. That’s because the phone uses energy searching for a good signal and, if the signal is very weak, trying to get a better connection.

你可能注意到了，在Wi-Fi或蜂窝网络覆盖不好的地方，手机电量耗得特别快。这是因为手机会使用电能寻找耗得信号，如果信号特别弱，还要试着更好地去连接。

To conserve battery life, disable the phone’s wireless circuitry. Airplane Mode, an option that will turn off all wireless features, is a quick and easy solution in areas with poor reception.

为了省电，可以关闭手机的无线电路。使用飞行模式可以关闭所有无线连接，在网络不好的地方，这是最便捷、最省事的解决方案。

Alternatively, you can disable (in your phone’s settings) a single wireless feature. For example, if you have terrible wireless carrier coverage in your office, but Wi-Fi is great, disabling cellular connectivity while there will keep the phone from wasting energy trying to get a cellular connection while still letting you connect to the Internet over Wi-Fi.

此外，你也可以尝试在手机设置里设置单一无线连接方式。比如，如果你的办公室里无线载波覆盖不好，但是Wi-Fi很好，那就关闭蜂窝连接，不让手机费电去连接蜂窝网络，只用Wi-Fi联网。

6. Check the battery usage lists.

6. 检查电池用量清单

Consumers can get even better results with a bit of sleuthing. Both the iPhone and Android systems provide a simple way to see which apps are using a lot of battery power. For iPhones and Android phones, open the Settings app and in the Battery menu, there are sorted lists of apps that are using the most energy.

消费者只需做一点调查，就能得到更好的体验。iPhone和安卓系统都有简便的方法，可以看到什么应用耗费了大量电量。打开“设置”的“电池”菜单，就可以看到各个应用使用电量的列表。

On the iPhone’s battery usage screen, tap the clock button to reveal information about how much of your battery life each app is consuming when you’re actively using the app (“screen”) compared with when you’re not (“backgd”). On Android, the most useful information are the timers for “CPU total” and “CPU foreground.” Foreground is how much time you had the app open; subtract “foreground” from “total,” and you’ll know how much time the app has been busy in the background.

在iPhone手机里，点击列表旁边的时钟，就可以显示出电池使用时的耗电量（“前台工作”）和不使用时的耗电量（“后台工作”）。在安卓手机里，最有用的信息是“CPU总量”和“CPU前台”的计时。前台计时是你打开这个应用的时间，用“总量”减去“前台”，就可以知道这个应用在后台耗费了多少电量。

Be on the lookout for apps that are active for extended periods in the background and are using a lot of battery power. Examples include an email app that spends lots of time checking for new messages even when your phone is asleep, a news reader that updates articles in the background or a fitness app that constantly monitors your location.

要注意那些在后台工作了很长时间，耗费大量电量的应用。比如某个邮件应用，在你的手机处于睡眠状态时，还花了很多时间检查新信息、某个新闻阅读应用在后台下载了大量文章，或是某个健康应用经常在监测你的位置。

If you find apps using up lots of energy in the background, disable their background activities. On an iPhone, go to the Settings app, tap General and then Background App Refresh and disable the background activities for any apps. On Android, go inside the Settings app, tap Data Usage, choose an app, then select “Restrict Background Data” for background data usage.

如果你发现某个应用在后台使用了大量电量，那就禁用它的后台活动。在iPhone上，可以打开“设置”，点击“通用”，再点击“后台应用刷新”，禁用这个应用的后台活动。在安卓系统下，可以进入“设置”，点击“数据使用”，选中这个应用，之后选择“限制后台数据”，就可以限制后台数据的使用了。

7. Disable unnecessary location tracking.

7. 禁用无必要的定位跟踪

Watch out for apps that track your location. Your phone’s GPS circuitry, which determines your geographic location for mapping and fitness features, consumes a lot of battery power. A run-tracking program that monitors your precise location for the duration of an hourlong run will lower your battery level.

当心那些追踪你位置的应用。你手机上的GPS系统会为地图类和健康类应用追踪你的地理位置，从而耗费大量电能。如果你慢跑1小时，跑步追踪应用会随时检测你的准确地理位置，损耗不少电能。

If a location-based app is using a lot of power, especially in the background, there’s a good chance the app is using GPS, Wi-Fi and the phone’s sensors frequently. You can decide whether to disable location features for it (either via your phone’s Location Services settings, or by changing settings in the app itself). On an iPhone, you can disable the app’s ability to track your location by going to Privacy menu and Location Services.

如果一个和地点有关应用使用了大量电能，特别是在后台使用的时候，很可能是它经常使用GPS系统、Wi-Fi以及手机的感应器。你可以自己决定是不是要关闭它的定位功能（可以通过手机的定位服务设置来关闭，也可以通过这个应用本身来关闭）。在iPhone手机上，还可以在“隐私”菜单中的“定位服务”一项来关闭应用的定位跟踪功能。

To disable location tracking on Android, go inside the Settings app, tap Apps, choose an app and select “Permissions,” then tap to disable Location permission.

在安卓手机上，要关闭定位跟踪系统，可以进入“设置”，点击“应用”，选中要关闭的应用，选择“权限”，之后选择关闭定位权限。

8. Shut off unnecessary push notifications.

8. 关闭不必要的推送通知

Both Apple and Google recommend disabling push notifications, which are essentially app alerts, to conserve battery life. Notifications require regular communication with notification servers, and each notification causes your phone to wake up for a few seconds, including turning on the screen, to show you a message and give you a chance to act on it.

为了节省电能，苹果和谷歌都建议关闭推送通知，特别是那些应用的通知。要接收这些通知，需要经常与发送通知的服务器通讯，每条通知都会令你的手机从睡眠状态中醒过来几秒钟，屏幕会亮起来，给你显示一条消息，让你做出回应。

In the Wirecutter’s testing, receiving a few dozen notifications over the course of an hour didn’t noticeably affect battery usage. But if you get a lot of notifications each day, that energy use can add up. If a particular app or service (say, Twitter or your email client) is constantly producing notifications, consider disabling notifications for that app.

根据Wirecutter的测试，在一小时内接收几十条通知不会明显影响电池用量。但是如果你每天都要接收大量推送通知，累计的电量就相当可观。如果某个应用或服务（比如Twitter或你的邮件客户端）经常制造通知，那就考虑关闭这个应用的通知吧。

On an iPhone, open the Settings app, tap Notifications, tap the app name and disable Allow Notifications. On Android, disable notification in an app’s settings menu, or long-press the notification itself and select the “i” icon. This will send you to that app’s App Notifications settings, where you can block all notifications.

在iPhone手机中，打开“设置”，点击“通知”，点击这个应用的名字，关闭“允许通知”。在安卓系统中，可以在该应用的设置菜单里关闭通知，或者长按这个通知，并选择上面的“i”图标。它会带你进入这个应用的“应用通知”设置，你可以在这个菜单里关闭所有通知。