您在(Are)Apple设备（iPhone 或 iPad）上发送短信时遇到困难吗？本教程将重点介绍 iPhone 不发送短信时的解决方案。
在尝试任何操作之前，请关闭并重新打开消息应用程序，并在 iPhone 的(Messages)状态栏中(Status Bar)检查您的蜂窝信号强度。如果信号条较低，则您可能处于蜂窝网络覆盖较差的区域。
移动(Move)到蜂窝网络接收效果更好的位置，以便在 iPhone 上发送和接收信息(receive messages on your iPhone)。此外，请确保您的 iPhone 未处于飞行模式。打开 iPhone 的设置(Settings)菜单，关闭飞行模式(Airplane Mode)，然后重试。
1.确认联系方式
如果收件人的详细联系信息（阅读：电话号码）不正确，消息可能会显示“未送达”或“消息发送失败”错误。如果您在第一次给某人发短信时遇到递送错误，请确认对方的电话号码是正确的。
如果号码正确但邮件未送达，则收件人的号码可能已断开连接或不再可用。尝试通过电话或即时通讯服务（可能是WhatsApp）联系收件人，以确认电话号码的真实性。
2. 检查您的账户余额
短信(SMS)不是免费的。移动运营商的标准信息费用取决于发送者和接收者的位置、信息长度、字符限制等。
许多运营商网络都有本地信息费率，比国际费率便宜。一些运营商甚至可能会向您收取接收国际短信的费用。
如果您的消息未送达，请确认您的帐户中有足够的资金来发送短信。更好(Better)的是，订阅一个允许您以零额外费用发送无限消息的计划。有关您所在国家/地区可用的短信费用和计划的更多信息，请联系您的手机运营商。
3. 检查 iMessage 系统状态
服务器(Server)中断是 iPhone 上消息失败的另一个值得注意的原因 - 特别是在您无法发送 iMessage 的情况下。前往(Head)Apple 的系统状态(System Status)页面并在服务列表中找到 iMessages。
如果消息服务的状态指示灯为绿色，则消息服务正常工作。红色或黄色图标表示 iMessage 有问题。等到(Wait)Apple恢复服务或联系 Apple 支持(contact Apple Support)报告问题。
4. 连接到蜂窝数据(Cellular Data)或Wi-Fi
您需要互联网连接才能在 iOS中发送和接收 iMessage 信息和彩信。(MMS)如果您的 iPhone 无法发送这些信息，请检查您是否已通过蜂窝数据或Wi-Fi连接到互联网。
5.关闭和重新打开消息
强制关闭有问题的应用程序有时可以解决导致应用程序故障的问题。SMS/MMS计划和强大的蜂窝信号强度下仍无法发送消息，请关闭(Close)并重新打开消息应用程序。(Messages)
6.启用彩信
彩信(MMS)包括图像、GIF文件、视频、语音备忘录等媒体文件。如果您无法发送或接收带有多媒体文件的蜂窝信息，则可能是您的 iPhone 上禁用了彩信。(MMS)这是重新打开该功能的方法。
打开设置(Settings)应用程序，选择消息(Messages)，滚动到SMS/MMS部分并打开MMS 消息(MMS Messaging)。如果您的运营商支持群组 MMS 消息(Group MMS messaging)，您还应该启用群组消息(Group Messaging)选项。
MMS消息需要网络连接，因此请确保支持(MMS)MMS消息的有效蜂窝数据计划。您可能无法通过Wi-Fi 连接发送或接收彩信。(MMS)
转到设置(Settings)>蜂窝(Cellular)或移动数据(Mobile Data)并打开蜂窝数据(Cellular Data)或移动数据(Mobile Data)。
7.尝试飞行模式技巧
您可以使用飞行模式(Airplane Mode)作为网络相关问题的故障排除修复程序。让您的 iPhone 进入和退出飞行模式将重新启动蜂窝无线电、刷新蜂窝连接并增强信号强度。
如果您的 iPhone 由于蜂窝网络接收不良而无法发送短信，则启用和禁用飞行模式(Airplane Mode)可以解决问题。
打开 iPhone 的控制中心(Control Center)，然后点击飞行模式图标(Airplane Mode icon)，直到它变成橙色。等待(Wait)大约 5-10 秒，然后点击橙色飞行模式图标(orange Airplane Mode icon)以禁用该功能并恢复蜂窝连接。
再等待(Wait)5-10 秒，打开消息(Messages)应用程序，然后检查您现在是否可以发送和接收短信。
8. 更新日期和时间设置
如果日期、时间和时区设置不正确，您的 iPhone 可能无法发送信息。或者，如果这些设置与您网络的日期和时间不匹配。
转到设置(Settings)>常规(General)>日期和时间(Date & Time)，然后打开自动设置(Set Automatically)。
等待(Wait)几秒钟让您的 iPhone 更新日期和时间设置，然后尝试重新发送未送达的信息。
9. 重新插入您的 SIM 卡
此工具是针对弱蜂窝接收和 iOS 网络错误(weak cellular reception and iOS network errors)的有效故障排除修复程序。将 iPhone 随附的SIM弹出工具插入(SIM)SIM托盘旁边的孔中。如果找不到SIM 卡(SIM)弹出工具，请使用回形针或其他细小物体。
从SIM(SIM)卡托中取出SIM卡，用干净的干布擦拭SIM卡的金属表面，然后将其放回SIM卡托中。
这样做可以自动安装运营商设置更新。如果问题仍然存在，请继续下一部分。
10.安装运营商设置更新
与 iOS 更新一样，运营商设置更新有助于修复错误和网络问题、改善蜂窝连接并提高网络性能。
过时的运营商设置可能是您的 iPhone 不发送短信的原因。虽然大多数运营商会自动将此类更新推送到移动设备，但请按照以下步骤在 iPhone 上手动安装更新。
将您的 iPhone 连接到蜂窝网络或 Wi-Fi 网络，前往“设置”(Settings) > “通用(General)” > “关于本机”，(About,)然后等待几秒钟。
如果您的 iPhone 有可用的运营商设置更新，您应该会在屏幕上看到提示。
11.重启你的手机
执行设备重启可能是另一个简单的解决方法。按住侧边按钮(Side button)+提高音量(Volume Up)或降低音量(Volume Down)按钮，然后将滑块向右移动以关闭滑块。(slide to power off)
或者，前往“设置”(Settings) > “通用(General)” > “关机”(Shut Down)，将滑块向右移动，然后等待大约 15 秒，让 iPhone 完全关机。
按住侧边按钮(side button)，直到屏幕上出现 Apple标志以重新启动 iPhone。(Apple)
12.重置网络设置
iPhone 的蜂窝或网络配置问题可能会触发消息错误。如果您的 iPhone 仍未发送短信，请执行网络重置。
注意：(Note:)网络重置不仅会将您的蜂窝网络首选项恢复为出厂默认设置。Wi-Fi（网络和密码）、VPN设置和蓝牙(Bluetooth)连接等其他网络组件也会被重置。
- 打开设置(Settings)，选择常规(General)，点击转移或重置 iPhone，(Transfer or Reset iPhone,)然后选择重置(Reset)。
如果您的 iPhone 运行的是 iOS 14 或更低版本，请前往“设置”(Settings) > “通用(General)” > “重置(Reset)” 。
- 选择重置网络设置(Reset Network Settings)，输入您的 iPhone 密码，然后在确认提示中选择重置网络设置(Reset Network Settings)以继续。
这将重新启动您的 iPhone 并将其网络设置重置为出厂默认设置。
13. 更新或降级你的 iPhone
iPhone 上安装的 iOS 版本通常会附带您不知道的问题。例如，iOS 14.2 存在阻止在 iPhone 上接收彩信(MMS)和消息通知的错误。此后， Apple(Apple)已通过iOS 14.2.1和iOS 14.3修复了该错误。
如果您的 iPhone 不发送短信，安装 iOS 更新可能会解决问题。将您的 iPhone 连接到 Wi-Fi 网络，然后按照以下步骤安装 iOS 更新。
前往“设置”(Settings) > “通用(General)” > “软件更新”(Software Update)以安装适用于 iPhone 的最新 iOS 版本。
安装更新后，您(Did)的 iPhone 是否停止发送短信？如果您不能等待Apple解决问题，请将您的 iPhone 降级到以前的稳定版本。(Downgrade your iPhone to the previous stable version)
联系您的移动运营商
您的手机运营商可能正在经历暂时的服务停机。或者，您的蜂窝数据计划不支持彩信(MMS)。我们应该提到硬件问题（例如，损坏的SIM卡端口/托盘、故障蜂窝天线等）也可能导致此问题。
如果问题仍然存在，请联系您的手机运营商、Apple 支持(Apple Support)、访问附近的Apple Store或安排 Genius Bar 预约(schedule a Genius Bar appointment)以检查您的 iPhone 是否有硬件损坏。
iPhone Not Sending Text Messages? 13 Fixes to Try
Are you havіng difficυlties sending text messages on your Apple device (iPhone or iPad)? This tυtorial will highlight solutions when your iPhone is not sending text messаgеs.
Before trying anything, close and reopen the Messages app, and examine your cellular signal strength in your iPhone’s Status Bar. If the signal bars are low, you’re likely in an area with poor cellular coverage.
Move to a location with better cellular reception to send and receive messages on your iPhone. Additionally, ensure your iPhone isn’t in airplane mode. Open your iPhone’s Settings menu, toggle off Airplane Mode, and try again.
1. Confirm the Contact Details
Messages might display a “Not Delivered” or “Message Failed to Send” error if the recipient’s contact detail (read: phone number) is incorrect. If you’re getting delivery errors the first time you text someone, confirm that the person’s phone number is correct.
If the number is correct but the message is undelivered, the recipient’s number is probably disconnected or no longer available. Try contacting the recipient via phone call or instant messaging services (maybe WhatsApp) to confirm the authenticity of the phone number.
2. Check Your Account Balance
SMS messaging isn’t free. Cellular carriers have standard messaging charges that vary depending on the location of the sender and recipient, message length, character limit, etc.
Many carrier networks have local messaging rates, which are cheaper than international rates. Some carriers may even charge you for receiving international text messages.
If your messages aren’t delivered, confirm that you have sufficient funds in your account to send text messages. Better yet, subscribe to a plan that allows you to send unlimited messages at zero extra cost. Contact your cellular carrier for more information about text messaging charges and plans available in your country.
3. Check iMessage System Status
Server outage is another noteworthy causative factor for message failures on iPhone—especially if you can’t send iMessages. Head to Apple’s System Status page and locate iMessages on the list of services.
The messaging service is working correctly if its status indicator is colored green. A red or yellow icon means there’s a problem with iMessages. Wait until Apple restores the service or contact Apple Support to report the problem.
4. Connect to Cellular Data or Wi-Fi
You need an internet connection to send and receive iMessages and MMS in iOS. If your iPhone fails to send these messages, check that you’re connected to the internet either via cellular data or Wi-Fi.
5. Close and Reopen Messages
Force-closing a problematic app can sometimes fix issues causing the app to malfunction. Close and reopen the Messages app if you can’t send messages despite having a strong internet connection, SMS/MMS plan, and strong cellular signal strength.
6. Enable MMS
MMS messages include media files like images, GIF files, videos, voice memos, etc. If you can’t send or receive cellular messages with multimedia files, MMS messaging is probably disabled on your iPhone. Here’s how to turn the feature back on.
Open the Settings app, select Messages, scroll to the SMS/MMS section and toggle on MMS Messaging. You should also enable the Group Messaging option—if your carrier supports Group MMS messaging.
MMS messaging requires a network connection, so ensure an active cellular data plan supporting MMS messaging. You may not be able to send or receive MMS messages over a Wi-Fi connection.
Go to Settings > Cellular or Mobile Data and toggle on Cellular Data or Mobile Data.
7. Try the Airplane Mode Trick
You can use Airplane Mode as a troubleshooting fix for network-related issues. Putting your iPhone in and out of airplane mode will reboot the cellular radio, refresh cellular connectivity, and boost signal strength.
If your iPhone isn’t sending text messages due to poor cellular reception, enabling and disabling Airplane Mode could resolve the problem.
Open your iPhone’s Control Center and tap the Airplane Mode icon until it turns orange. Wait for about 5-10 seconds and tap the orange Airplane Mode icon to disable the feature and restore cellular connectivity.
Wait for another 5-10 seconds, open the Messages app, and check if you can now send and receive text messages.
8. Update Date & Time Settings
Your iPhone may fail to send messages if the date, time, and timezone settings are incorrect. Or, if these settings don’t match your network’s date and time.
Go to Settings > General > Date & Time and toggle on Set Automatically.
Wait for some seconds for your iPhone to update the date & time settings, and try resending the undelivered messages.
9. Re-Insert Your SIM Card
This tool is an effective troubleshooting fix for weak cellular reception and iOS network errors. Insert the SIM-eject tool that shipped with your iPhone into the hole next to the SIM tray. Use a paper clip or other small, thin object if you can’t find the SIM-eject tool.
Remove your SIM card from the SIM tray, wipe the metal surface of the SIM card with a clean, dry cloth, and put it back in the SIM tray.
Doing this could automatically install carrier settings updates. Proceed to the next section if the problem persists.
10. Install Carrier Settings Update
Like iOS updates, carrier settings updates help fix bugs and network issues, improve cellular connectivity, and boost network performance.
Outdated carrier settings could be the reason why your iPhone is not sending text messages. While most carriers automatically push such updates to mobile devices, follow the steps below to install the updates on your iPhone manually.
Connect your iPhone to a cellular or Wi-Fi network, go to Settings > General > About, and wait for some seconds.
You should get a prompt on the screen if a carrier settings update is available for your iPhone.
11. Restart Your Phone
Performing a device reboot could be another easy fix. Press and hold the Side button + Volume Up or Volume Down button and move the slide to power off slider to the right.
Alternatively, go to Settings > General > Shut Down, move the slider to the right, and wait for about 15 seconds for your iPhone to shut down completely.
Press and hold the side button until the Apple logo appears on the screen to restart your iPhone.
12. Reset Network Settings
Problems with your iPhone’s cellular or network configurations could trigger messaging errors. Perform a network reset if your iPhone still isn’t sending text messages.
Note: A network reset not only returns your cellular network preferences to factory default. Other network components like Wi-Fi (networks and passwords), VPN settings, and Bluetooth connections are also reset.
- Open Settings, select General, tap Transfer or Reset iPhone, and select Reset.
If your iPhone is running iOS 14 or older, go to Settings > General > Reset.
- Select Reset Network Settings, enter your iPhone’s passcode, and select Reset Network Settings on the confirmation prompt to proceed.
That will restart your iPhone and reset its network settings to factory default.
13. Update or Downgrade Your iPhone
The iOS version installed on your iPhone often ships with issues of which you’re unaware. For instance, iOS 14.2 had bugs that prevented the receipt of MMS messages and message notifications on iPhone. Apple has since fixed the bug with iOS 14.2.1 and iOS 14.3.
If your iPhone isn’t sending text messages, installing an iOS update might fix the problem. Connect your iPhone to a Wi-Fi network and follow the steps below to install an iOS update.
Go to Settings > General > Software Update to install the latest version of iOS available for your iPhone.
Did your iPhone stop sending text messages after installing an update? Downgrade your iPhone to the previous stable version if you cannot wait for Apple to resolve the issue.
Contact Your Cellular Carrier
Your cell phone carrier may be experiencing a temporary service downtime. Or perhaps, your cellular data plan doesn’t support MMS messaging. We should mention that hardware issues (e.g., damaged SIM card port/tray, faulty cellular antenna, etc.) can also cause this problem.
If the problem continues, contact your cellular carrier, Apple Support, visit a nearby Apple Store, or schedule a Genius Bar appointment to examine your iPhone for hardware damages.
