iPhone自首次发布以来一直是“最热门”的手机。但除了它的受欢迎程度之外，它有时确实会变得太热，而过热是你应该注意的警告信号。如果您的 iPhone 太热而无法舒适，让我们谈谈它发生的原因以及您可以采取的措施。
为什么 iPhone 会过热？简单的答案是 iPhone 依靠电池供电运行。在此过程中，其中一些电能转化为热能。热量(Heat)需要从设备中排出，因为热量过多会损坏设备或导致设备发生故障。
但是，iPhone 没有像您的计算机那样的风扇。所以，热量不能以比它积累的速度更快的速度离开。如果它不能离开，当水银上升时，你会得到来自 iOS 的呼救声。幸运的是，有很多方法可以防止这种情况。
1.不要在充电时使用它
当您将手机插入充电时，可能会很想继续使用它。但是，将电放入电池会产生热量作为副产品，从而加热整个手机。对于轻松的任务，一点点热量是可以的。
如果你做一些激烈的事情，比如玩电子游戏，总热量可能太多了。因此，请给手机一些时间充电，然后在将其用于密集任务之前将其拔下。
2.使用高品质(Quality)或官方(Official)充电器
使用非 Apple 或不兼容的充电器和数据线可能会导致您的手机收到不正确的电压。这可能会使电池过热、损坏并导致危险的事故。仅使用完全符合USB电源标准的 Apple 认证 Lightning 线缆和移动电源或壁式充电器。(Apple-certified Lightning cables)
3.禁用后台刷新
Apple iOS 在后台控制应用程序方面非常激进，但某些应用程序可能需要检查更新或间歇性地监控基本变化。
虽然这通常很好，但某些应用程序可能无法在后台正常运行，并导致您的手机发热并更快地耗尽电池电量。您可以关闭所有应用或特定应用的后台刷新：
- 转到设置(Settings)。
- 去一般(General)。
- 转到后台应用程序刷新(Background App Refresh)。
- (Toggle)将您不想在后台工作的应用程序切换为关闭。
- 或者，选择后台应用程序刷新( Background App Refresh)并将其设置为关闭(Off)以终止该功能。
4.限制游戏(Games)中的帧率(Framerate)和细节(Detail)
现代 iOS 设备能够运行与主机游戏一样复杂和美观的视频游戏。(video games)然而，这是有代价的。大多数高端现代手机游戏通常都有一个设置菜单，可以让你限制帧速率，甚至可能降低游戏的分辨率。如果您的 iPhone 在长时间播放期间变得太热，这将有助于您的手机使用更长时间并保持凉爽。
5.调低亮度
显示屏打开时屏幕会发热并耗尽电池电量，因此调低亮度有助于让手机保持凉爽。
6. 无壳运行
iPhone 的机身是热量散去的唯一途径。因此，如果您的iPhone 被保护在一个(iPhone protected in a case)过度绝缘的外壳中，请考虑赤身裸体。或者，选择一个不太容易保持热量的外壳可能是一个很好的中间立场。
7.关闭未使用的功能
手机中的每个无线电设备都会导致热量积聚，因此如果您不使用蓝牙(Bluetooth)、Wi-Fi或GPS，请在手机过热时尝试关闭它们。您还可以有选择地关闭应用程序上的定位服务并节省电池电量。
8.降低环境温度
您的手机可能会遇到困难的一个原因是环境温度是否高于 95F (35C)，这是 Apple 为其设备推荐的最高温度。答案是降低环境温度或关闭 iPhone 以使其快速冷却。
警告：膨胀(Swollen)、发热(Hot)或发出嘶嘶声的电池
在极少数情况下，您的 iPhone 摸起来会非常热、膨胀或发出嘶嘶声。把它放在远离易燃物的地方，并保持距离。这可能是电池即将发生剧烈故障(battery failure)的迹象。
用第三方非 Apple 设备更换 iPhone 电池是自找麻烦。最严重的电池过热和爆炸问题似乎与杂牌电池有关。
但是请注意，温暖的手机不是问题。您可能认为您的手机感觉更暖和，但这可能只是暂时的，因为您看了一段时间的 Netflix 。
请注意 iOS 是否向您发出警告或您注意到上述令人担忧的电池症状。
iPhone Getting Hot? 8 Fixes to Cool Things Down
The iPhone has been thе “hottest” phonе ever since it was fіrst rеleased. But besides its popularity, it does get too hot sometimes, and that excess heat iѕ a warning sign you should notice. If your iPhone is getting too hot for comfort, let’s talk abоut why it’s happening and what you can do about it.
Why do iPhones overheat? The simple answer is that an iPhone runs on electricity from the battery. Some of that electricity is converted to heat in the process. Heat needs to move out of the device because it can damage the device or cause it to malfunction if it builds up too much.
However, the iPhone doesn’t have a fan like your computer does. So, that heat can’t leave at a faster rate than it builds up. If it can’t leave, you’ll get a cry for help from iOS when the mercury goes up. Luckily there are plenty of ways to prevent this.
1. Don’t Use It While Charging
It can be tempting to keep using your phone when you’ve plugged it in to charge. But, putting electricity into the battery creates heat as a byproduct, heating the whole phone. For doing light tasks, a little bit of heat is okay.
If you do something intense, such as play video games, the total amount of heat might be too much. So give the phone some time to charge and then unplug it before using it for intensive tasks.
2. Use High Quality or Official Chargers
Using non-Apple or non-compliant chargers and cables can lead to a situation where your phone receives incorrect voltages. This can overheat the battery, damage it, and cause a dangerous mishap. Only use Apple-certified Lightning cables and power banks or wall chargers that comply fully with USB power standards.
3. Disable Background Refresh
Apple iOS is aggressive when it comes to reigning in applications in the background, but some apps may need to check for updates or intermittently monitor essential changes.
While this is generally fine, some apps may not work well in the background and cause your phone to heat up and drain the battery more quickly. You can turn off background refresh for all apps or just specific ones:
- Go to Settings.
- Go to General.
- Go to Background App Refresh.
- Toggle apps you don’t want working in the background to off.
- Alternatively, select Background App Refresh and set it to Off to kill the feature.
4. Limit the Framerate and Detail in Games
Modern iOS devices are capable of running video games that are as complex and beautiful as console games. However, this comes at a cost. Most high-end modern mobile games usually have a settings menu that will let you limit the frame rate and perhaps even turn down the resolution of the game. If your iPhone is getting too hot during extended play, this will help your phone last longer and stay cooler.
5. Turn Down the Brightness
Your screen generates heat when the display is on and drains the battery, so turning down the brightness can help keep the phone cooler.
6. Run It Caseless
The body of your iPhone is the only path for heat to leave. So if you’ve got your iPhone protected in a case that’s insulating it too much, consider going naked. Alternatively, choosing a case that’s less prone to keeping the heat in might be a good middle ground.
7. Turn Off Unused Features
Every radio device in your phone can contribute to heat buildup, so if you aren’t using Bluetooth, Wi-Fi, or GPS try turning them off if your phone gets too hot. You can also selectively turn off location services on apps and conserve the battery.
8. Reduce the Ambient Temperature
One reason your phone may be struggling is if the ambient temperature is higher than 95F (35C), Apple’s maximum recommended temperature for its devices. The answer is to lower the ambient temperature or turn off the iPhone to cool it off quickly.
Warning: Swollen, Hot, or Hissing Batteries
On rare instances, your iPhone can feel extremely hot to the touch, swell up, or make a hissing noise. Put it somewhere away from anything flammable and keep your distance. This can be a sign of imminent and violent battery failure.
Replacing your iPhone battery with a third-party, non-Apple unit is asking for trouble. Most serious battery overheating and explosion issues seem to be linked to no-name batteries.
Do note however that a warm phone isn’t a problem. You may think your phone feels warmer, but it may just be temporary because you watched Netflix for a while.
Take note if iOS gives you a warning or you notice worrying battery symptoms as mentioned above.
