手機總是很快沒電 送你一些省電妙招2

5. Turn off wireless when reception is poor.

5. 信號弱的時候關閉無線網絡

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或蜂窩網絡覆蓋不好的地方，手機電量耗得特別快。這是因爲手機會使用電能尋找耗得信號，如果信號特別弱，還要試着更好地去連接。

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.

爲了省電，可以關閉手機的無線電路。使用飛行模式可以關閉所有無線連接，在網絡不好的地方，這是最便捷、最省事的解決方案。

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，你也可以嘗試在手機設置裏設置單一無線連接方式。比如，如果你的辦公室裏無線載波覆蓋不好，但是Wi-Fi很好，那就關閉蜂窩連接，不讓手機費電去連接蜂窩網絡，只用Wi-Fi聯網。

6. Check the battery usage lists.

6. 檢查電池用量清單

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.

消費者只需做一點調查，就能得到更好的體驗。iPhone和安卓系統都有簡便的方法，可以看到什麼應用耗費了大量電量。打開“設置”的“電池”菜單，就可以看到各個應用使用電量的列表。

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手機裏，點擊列表旁邊的時鐘，就可以顯示出電池使用時的耗電量（“前臺工作”）和不使用時的耗電量（“後臺工作”）。在安卓手機裏，最有用的信息是“CPU總量”和“CPU前臺”的計時。前臺計時是你打開這個應用的時間，用“總量”減去“前臺”，就可以知道這個應用在後臺耗費了多少電量。

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.

要注意那些在後臺工作了很長時間，耗費大量電量的應用。比如某個郵件應用，在你的手機處於睡眠狀態時，還花了很多時間檢查新信息、某個新聞閱讀應用在後臺下載了大量文章，或是某個健康應用經常在監測你的位置。

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.

如果你發現某個應用在後臺使用了大量電量，那就禁用它的後臺活動。在iPhone上，可以打開“設置”，點擊“通用”，再點擊“後臺應用刷新”，禁用這個應用的後臺活動。在安卓系統下，可以進入“設置”，點擊“數據使用”，選中這個應用，之後選擇“限制後臺數據”，就可以限制後臺數據的使用了。

7. Disable unnecessary location tracking.

7. 禁用無必要的定位跟蹤

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.

當心那些追蹤你位置的應用。你手機上的GPS系統會爲地圖類和健康類應用追蹤你的地理位置，從而耗費大量電能。如果你慢跑1小時，跑步追蹤應用會隨時檢測你的準確地理位置，損耗不少電能。

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.

如果一個和地點有關應用使用了大量電能，特別是在後臺使用的時候，很可能是它經常使用GPS系統、Wi-Fi以及手機的感應器。你可以自己決定是不是要關閉它的定位功能（可以通過手機的定位服務設置來關閉，也可以通過這個應用本身來關閉）。在iPhone手機上，還可以在“隱私”菜單中的“定位服務”一項來關閉應用的定位跟蹤功能。

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.

在安卓手機上，要關閉定位跟蹤系統，可以進入“設置”，點擊“應用”，選中要關閉的應用，選擇“權限”，之後選擇關閉定位權限。

8. Shut off unnecessary push notifications.

8. 關閉不必要的推送通知

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.

爲了節省電能，蘋果和谷歌都建議關閉推送通知，特別是那些應用的通知。要接收這些通知，需要經常與發送通知的服務器通訊，每條通知都會令你的手機從睡眠狀態中醒過來幾秒鐘，屏幕會亮起來，給你顯示一條消息，讓你做出迴應。

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.

根據Wirecutter的測試，在一小時內接收幾十條通知不會明顯影響電池用量。但是如果你每天都要接收大量推送通知，累計的電量就相當可觀。如果某個應用或服務（比如Twitter或你的郵件客戶端）經常製造通知，那就考慮關閉這個應用的通知吧。

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手機中，打開“設置”，點擊“通知”，點擊這個應用的名字，關閉“允許通知”。在安卓系統中，可以在該應用的設置菜單裏關閉通知，或者長按這個通知，並選擇上面的“i”圖標。它會帶你進入這個應用的“應用通知”設置，你可以在這個菜單裏關閉所有通知。