您在提高或降低 iPhone 的音量时遇到问题吗？还是扬声器完全关闭？该问题可能是系统范围的，也可能是某个特定应用程序的问题，发生这种情况的原因有多种。
例如，您可能正在处理 iOS 中的技术故障、声音设置冲突或音频设置配置不正确。按照以下建议和解决方案解决 iPhone 声音问题。
如果仅在通话期间出现音频问题，请查看我们的iPhone 耳机故障排除指南(iPhone ear speaker troubleshooting guide)。
1.使用控制中心的音量滑块(Slider)
如果 iPhone 上的音量调高和音量调低(Down)按钮没有响应，与控制中心的音量滑块进行短暂交互可以让它们重新工作。
为此，请从屏幕右上角向下滑动（如果您的 iPhone 有主(Home)屏幕按钮，则从底部边缘向上滑动）并向上或向下拖动音量滑块。
2.为铃声(Ringer)和警报(Alerts)启用音量按钮(Buttons)
假设音量按钮仅无法更改 iPhone 的铃声和提醒音量。如果是这样，那是因为相关的声音设置可能处于非活动状态。要解决这个问题：
- 打开您的 iPhone 设置应用程序。
- 点击声音和触觉类别。
- 启用 Change with Buttons 旁边的开关。
3. 在 iPhone 上禁用静音模式
如果您可以调节 iPhone 音量但听不到铃声和提醒，请确保静音模式(Silent Mode)未激活。为此，找到Ring/Silent开关（在音量按钮上方）。如果您看到橙色条带，则必须向另一方向轻按开关。您会看到静音模式(Silent Mode)关闭警报作为确认。
4.禁用请勿打扰模式(Disturb Mode)和焦点(Focus)
“请勿打扰”(Do Not Disturb)和“专注”(Focus)是两个 iOS 功能，可以使来电和通知静音，将它们直接发送到语音信箱和通知中心(Notification Center)。要禁用它们，请打开控制中心(Control Center)并点击“请勿打扰(Disturb)”或“专注”(Focus)图标。
5. 打开/关闭单声道音频
单声道音频(Mono Audio)是一项 iOS 辅助功能，可在左右 iPhone 扬声器上播放相同的声音。打开和关闭它会重新启动音响系统，并有助于消除与音频相关的小问题。
1. 打开设置应用程序。
2.向下滚动(Scroll)并点按Accessibility > Audio/Visual。
3. 打开单声道音频(Mono Audio)旁边的开关。等待五(Wait five)秒钟，然后再次将其关闭。
6. 检查您的通知首选项
如果您的 iPhone 没有为某个应用程序的传入通知播放声音，请转到“设置”(Settings)，向下滚动，然后点按有问题的应用程序。然后，点击通知(Notifications)并确保声音(Sounds)旁边的开关处于活动状态。
7.寻找应用内音频设置
如果音量调整对特定的本机或第三方应用程序没有影响，请检查应用程序本身的音频控件。
例如，除非你点击扬声器(Speaker)图标，否则 iPhone 上的照片(Photos)不会播放视频中的声音，而Spotify有一个内置的均衡器会影响音频输出。
8. 强制退出并重启应用
如果特定应用程序的音频问题仍然存在，请尝试强制退出并重新打开它。只需(Just)从 iPhone 屏幕底部向上轻扫（或双击主(Home)屏幕按钮），从App Switcher轻扫应用程序，然后通过主屏幕(Home Screen)重新启动它。
9. 更新有音频问题(Audio Issues)的第三方应用(App)
如果强制退出第三方应用程序没有帮助，请尝试更新它。为此，请打开App Store，搜索有问题的应用程序，然后点按更新(Update)。
如果不更新系统软件，就无法更新 iPhone 上的原生应用程序。
10.更新到最新(Latest)的iOS版本
较新(Newer)的 iOS 版本提供了错误修复，可解决系统软件和本机应用程序的潜在问题。要更新系统软件，请连接到Wi-Fi，进入Settings > General > Software Update，然后点击下载(Download)并安装(Install)。
11. 断开蓝牙(Bluetooth) 设备(Devices) 与(From)iPhone
的连接
如果您拥有蓝牙(Bluetooth)音频设备（例如AirPods），最好确保您的 iPhone 不会无意中将音频路由到它而不是内置扬声器。要进行检查，请转至Settings > Bluetooth。如果设备已连接，请点击它旁边的信息图标，然后点击(Info)断开连接(Disconnect)。
12.退出耳机模式
iOS 有一个长期存在的问题，在移除有线耳机后，它往往会卡在耳机模式。(Headphone Mode)发生这种情况时，您会在控制中心的音量滑块上看到一个耳机(Headphone)图标。
要解决此问题，只需重新连接然后再次拔下耳机即可。或者重新启动或强制重新启动您的 iPhone。
13. 重启或强制重启(Force-Restart)iPhone。
重启 iPhone 是解决系统软件及其上运行的应用程序中出现的大量问题的有效方法。
如果您还没有，请打开“设置”(Settings)应用程序，点按“General > Shutdown”，然后关闭设备。等待 30 秒，然后按住侧面(Side)按钮重新启动它。
如果无法解决声音问题，请尝试强制重启设备。为此，请快速按下并松开调高音量按钮和调低音量按钮(Down)，然后按住侧边(Side)按钮直到出现Apple标志。在配备Touch ID(Touch ID)的iPhone 机型上，请改为按住主(Home)屏幕按钮和侧边(Side)按钮。
14. 重置 iPhone 上的所有设置
接下来，重置 iPhone 上的所有设置以排除音频配置损坏的可能性。为此，请打开“设置”(Settings)应用，前往“General > Transfer”或“重置(Reset)iPhone ” > Reset”，然后轻点“重置所有设置”(Reset All Settings)。
15. 重新安装 iOS 以修复iPhone 上
没有声音的问题(Fix No Sound)
如果重置所有设置后问题仍然存在，那么是时候重新安装 iOS 了。将您的 iPhone 备份到 iCloud 或计算机(Back up your iPhone to iCloud or a computer)以避免数据丢失。然后，打开“设置”(Settings)应用并转到“General > Transfer或重置(Reset)iPhone ” > Erase All Content和设置”(Settings)。
或者，use iTunes/Finder on a PC or Mac to reinstall iOS。您可以在重置过程后从备份中恢复数据。
把你的 iPhone 带到 Apple
如果本文中的所有修复都没有帮助，请联系 Apple 支持(contact Apple Support)并预约Genius Bar 天才吧。(Genius Bar)您可能遇到了与音量按钮或 iPhone 扬声器相关的硬件问题，只有Apple技术人员才能诊断和修复。
iPhone Volume Not Working? 15 Ways to Fix
Do yоu have trouble increasing or decreasing the νolume on your iPhone? Or are the speakers comрletely off? The problem could be systemwide or isolated to a specific app, and therе are sеveral reasons why that happens.
For example, you could be dealing with a technical glitch in iOS, a conflicting sound setting, or an incorrectly-configured audio setup. Follow the suggestions and solutions below to fix iPhone sound issues.
If audio problems occur only during phone calls, check our iPhone ear speaker troubleshooting guide instead.
1. Use the Control Center’s Volume Slider
If the Volume Up and Down buttons on the iPhone aren’t responsive, briefly interacting with the Control Center’s Volume slider could get them working again.
To do that, swipe down from the top right of the screen (or swipe up from the bottom edge if your iPhone has a Home button) and drag the Volume slider up or down.
2. Enable Volume Buttons for Ringer and Alerts
Suppose the Volume buttons only fail to change your iPhone’s ringer and alert volume. If so, that’s because the relevant sound setting is probably inactive. To fix that:
- Open your iPhone Settings app.
- Tap the Sounds & Haptics category.
- Enable the switch next to Change with Buttons.
3. Disable Silent Mode on iPhone
If you can adjust the iPhone volume but can’t hear ringtones and alerts, ensure that Silent Mode is not active. To do that, locate the Ring/Silent switch (above the Volume buttons). If you see an orange strip, you must flick the switch the other way. You’ll see a Silent Mode Off alert as confirmation.
4. Disable Do Not Disturb Mode and Focus
Do Not Disturb and Focus are two iOS features that silence calls and notifications, sending them directly to voicemail and the Notification Center. To disable them, open the Control Center and tap the Do Not Disturb or Focus icon.
5. Turn Mono Audio On/Off
Mono Audio is an iOS accessibility feature that plays the same sound on the left and right iPhone speakers. Toggling it on and off reboots the sound system and helps eliminate minor audio-related issues.
1. Open the Settings app.
2. Scroll down and tap Accessibility > Audio/Visual.
3. Turn on the switch next to Mono Audio. Wait five seconds and turn it off again.
6. Check Your Notification Preferences
If your iPhone does not play a sound for incoming notifications for an app, go to Settings, scroll down, and tap the app in question. Then, tap Notifications and make sure that the switch next to Sounds is active.
7. Look for In-App Audio Settings
If volume adjustments make no impact on a particular native or third-party app, check for audio controls within the app itself.
For example, Photos on the iPhone doesn’t play sounds in videos unless you tap the Speaker icon, while Spotify has a built-in equalizer that affects the audio output.
8. Force-Quit and Restart App
If audio issues with a specific app persist, try force-quitting and re-opening it. Just swipe up from the bottom of the iPhone screen (or double-click the Home button), swipe away the app from the App Switcher, and relaunch it via the Home Screen.
9. Update Third-Party App With Audio Issues
If force-quitting a third-party app does not help, try updating it. To do that, open the App Store, search for the app in question, and tap Update.
You can’t update native apps on the iPhone without updating the system software.
10. Update to the Latest iOS Version
Newer iOS versions provide bug fixes that resolve underlying problems with the system software and native apps. To update the system software, connect to Wi-Fi, go to Settings > General > Software Update, and tap Download and Install.
11. Disconnect Bluetooth Devices From iPhone
If you own a Bluetooth audio device (e.g., the AirPods), it’s best to ensure that your iPhone isn’t inadvertently routing audio to it and not to the built-in speakers. To check, go to Settings > Bluetooth. If a device is connected, tap the Info icon next to it and tap Disconnect.
12. Exit Headphone Mode
iOS has a long-running problem where it tends to get stuck in Headphone Mode after removing a wired headphone. When that happens, you’ll see a Headphone icon on the Control Center’s Volume slider.
To fix that, simply reconnect and then unplug the headphone again. Or restart or force-restart your iPhone.
13. Reboot or Force-Restart iPhone.
Restarting your iPhone is an effective way of resolving loads of problems that crop up in the system software and the apps that run on it.
If you haven’t already, open the Settings app, tap General > Shutdown, and turn off the device. Wait 30 seconds and hold the Side button to reboot it.
If that fails to fix sound problems, try force-restarting the device. To do that, quickly press and release the Volume Up button and the Volume Down button, and then hold the Side button until the Apple logo appears. On iPhone models with Touch ID, press and hold the Home and Side buttons instead.
14. Reset All Settings on iPhone
Next, reset all settings on your iPhone to rule out the possibility of a corrupt audio configuration. To do that, open the Settings app, go to General > Transfer or Reset iPhone > Reset, and tap Reset All Settings.
15. Reinstall iOS to Fix No Sound on iPhone
If the problem persists despite the all-settings reset, it’s time to reinstall iOS. Back up your iPhone to iCloud or a computer to avoid data loss. Then, open the Settings app and go to General > Transfer or Reset iPhone > Erase All Content and Settings.
Or, use iTunes/Finder on a PC or Mac to reinstall iOS. You can restore your data from a backup after the reset procedure.
Take Your iPhone to Apple
If none of the fixes in this post are helpful, contact Apple Support and make a Genius Bar reservation. You’re likely looking at a hardware issue related to the Volume buttons or the speakers on your iPhone that only an Apple technician can diagnose and fix.
