尽管WhatsApp(WhatsApp)和Facebook Messenger在其他安全即时通讯应用程序(secure instant messaging apps)中很受欢迎，但短信仍然被广泛使用。
当您无法在Android(Android)设备上发送短信时，您还会担心是否丢失了人们发送给您的信息。更糟糕的是，您可能会担心您的设备已被黑客入侵，但这种情况的可能性非常低。
我们将引导您完成解决问题并恢复与亲人和同事的沟通所需的步骤。
为什么我不能在我的 Android 上发送短信？(Why Can’t I Send Text Messages on My Android?)
短信需要三样东西：您的设备、短信应用程序和蜂窝网络。由于以下几个原因，所有三个组件都可能在不同的点出现故障：
- 没信号。
- 通话时间不足。
- 错误的设置。
- 蜂窝网络可能不会发送或接收消息。
- 网络堵塞交通。
- 您拨打的号码可能无效或已断开连接。
- 手机可能已损坏。
- (Flight Mode)设备上启用了飞行模式。
- SIM卡未正确插入。
- 消息应用程序可能有故障或故障。
- 消息中心设置 ( SMSC(SMSC) )无效。
所有这些问题可能都不容易诊断，只有在您解决问题后才会显现出来。因此，让我们尝试让您的Android设备再次发送短信。
当您无法从 Android 发送短信时该怎么办(What to Do When You Can’t Send Text Messages From Android)
这些故障排除步骤应该可以帮助您从Android(Android)手机恢复短信。
初步检查(Preliminary Checks)
- 检查您的电话计划是否有足够的通话时间来发送短信。您可能正在尝试发送一条需要更多通话时间才能发送的长消息。
- 检查您设备的接收情况，因为这可能会干扰从您的设备发送或接收消息和呼叫。如果你在家，找一个接收效果更好的地方，或者找个助推器来改善接收效果。
- 检查您的蜂窝服务提供商关于网络问题的状态更新。
- 确认您要向其发送消息的电话号码正确且有效。您可能输入了一些错误的数字或错误的代码，将消息发送到一个不存在的号码。
- 检查您的运营商是否支持SMS、MMS或RCS消息传递。
- 确认Messages是您的默认短信应用程序。
- 确保您的SIM 卡(SIM card)正确插入端口。如果是，请检查您设备的状态或通知栏以查看移动网络是否处于活动状态。如果您收到“无SIM卡”消息，请重新插入SIM卡并重试，但如果您的手机仍无法检测到SIM卡，请在另一部手机上尝试或联系您的网络提供商。
- 重新启动手机以在出现无限循环或故障时刷新它，并安装Messages(Messages)应用程序需要的任何操作系统更新。
- 禁用飞行模式(Airplane Mode)。启用飞行模式(Airplane Mode)后，它会关闭所有形式的无线通信，因此您无法拨打或接听电话，甚至无法发送和接收短信。要禁用飞行模式(Airplane Mode)，请打开设置(Settings )>连接( Connections )>飞行模式( Flight Mode)并将其切换到关闭(Off)。
- 在您的设备上退出(Quit)并重新启动“信息(Messages)”应用，以解决任何可能阻碍您从设备发送短信的内存管理问题。
- 更新 Android(Update Android)以修复任何错误或修复与消息(Messages)应用程序相关的任何问题，然后再次尝试发送短信。根据您的Android设备型号，您可以通过转到“设置”(Settings ) > “软件更新”( Software Update)并安装任何待处理的更新或“设置”(Settings ) > “系统( System )” > “高级( Advanced )” > “系统更新( System Update)”来更新操作系统。
- 更新消息应用程序以解决阻止您发送短信的任何错误或模糊问题。
1.检查被阻止的号码(1. Check Blocked Numbers)
如果您无法向一个人发送短信，则可能是他们的号码被阻止了。
- 要检查它是否被阻止，请打开联系人(Contacts)，点击此人的姓名并检查姓名或号码旁边的阻止(Block)图标（带有对角线的圆圈）。
- 点击屏幕右上角的三个点，然后点击取消阻止(Unblock)以再次开始向此人发送短信。
注意(Note)：可能是其他人也屏蔽了您，这意味着您可以发送但他们不会收到您的消息。此外，有人可能没有回复您，从而给您留下您的消息没有通过的印象。
- 您可以启用已读回执(Receipts)以确认有人收到您的短信。打开消息(Messages )点击三个点，然后点击设置( Settings)>更多设置( More Settings )>短信( Text Messages)，然后切换发送报告(Delivery Reports)开关以启用阅读回执。
2.清除短信应用的缓存和数据(2. Clear Your Text Message App’s Cache and Data)
清除缓存有助于刷新和消除消息(Messages)应用程序中的任何故障。
- 要清除缓存，请打开设置(Settings )>应用程序( Apps)，然后点击消息(Messages)（或您的消息应用程序）。
- 点击存储(Storage)。
- 接下来，点击清除缓存(Clear Cache)。
- 要清除应用程序的数据，请点击清除数据(Clear data)，然后点击确定(OK)以确认操作。
重新启动您的设备，然后再次尝试发送短信。
3.将短信设置重置为默认值(3. Reset SMS Settings to Default)
如果您在问题开始之前更换了SIM卡，则默认SMS设置可能已更改。这在发送短信时提出了挑战，因为每个服务提供商都有不同/独特的偏好，允许他们正确发送消息。
- 要将SMS设置重置为默认值，请在手机上打开Messages应用程序，然后点击Settings。
- 将所有选项重置为默认值，重新启动设备并尝试再次发送短信。
4.检查短信中心(4. Check SMSC)
SMSC或消息中心号码(Message Center Number)类似于移动互联网连接所需的接入点名称(Access Point Names)( APN )。SMSC对每个网络运营商都是独一无二的，可帮助您发送短信。
- 要检查设备上的SMSC，请打开消息(Messages )应用程序，然后点击屏幕右侧的三个点以打开设置(Settings)。
- 点击更多设置(More Settings)。
- 接下来，点击短信(Text Messages)。
- 检查底部的消息中心(Message Centre)以查看运营商的消息中心电话号码。
注意(Note)：您也可以查看运营商的网站，与手机上的消息中心号码进行比较。如果您的不同或丢失，请在消息中心(Message Centre)字段中输入，然后点击确定(OK )保存。
如果您在尝试之前的修复后仍无法从Android(Android)发送短信，请联系您的服务提供商寻求帮助。
恢复与您的联系人的通信(Restore Communication with Your Contacts)
如果您已尝试上述所有检查和修复，但您的Android设备仍无法发送短信，请将其送修或与您的移动运营商联系以获得进一步帮助。知道任何其他技巧来解决无法从(Know)Android发送短信的问题吗？在评论中与我们分享。
Can’t Send Text Messages From Android? 4 Fixes to Try
Text messages are still widely utilized despite the popularity of WhatsApp and Faсebook Mеssenger among other secure instant messaging apps.
When you can’t send text messages on your Android device, you’ll also be worried about whether you’re missing messages people are sending you. Worse still, you may be worried that your device has been hacked, but there’s a very low chance of that being the cause.
We’ll walk you through the steps you need to resolve the problem and restore communication with loved ones and colleagues.
Why Can’t I Send Text Messages on My Android?
Text messaging requires three things: your device, the messaging app, and a cellular network. All three components can fail at different points for several reasons such as:
- No signal.
- Insufficient airtime.
- Wrong settings.
- The cellular network may not send or receive messages.
- Network jammed with traffic.
- The number you’re reaching may be invalid or disconnected.
- Phone may be damaged.
- Flight Mode is enabled on the device.
- The SIM card is not inserted properly.
- Messaging app may be buggy or malfunction.
- Invalid message center settings (SMSC).
All these issues may not be easy to diagnose and only reveal themselves once you fix the problem. So, let’s try to get your Android device sending text messages again.
What to Do When You Can’t Send Text Messages From Android
These troubleshooting steps should help you resume text messaging from an Android phone.
Preliminary Checks
- Check if you have sufficient airtime on your phone plan for sending text messages. You may be trying to send a long message that requires more airtime before it can be sent.
- Check your device’s reception as this could interfere with sending or receiving messages and calls from your device. If you’re at home, find a spot with better reception or get a booster to improve reception.
- Check your cellular provider’s status updates concerning network issues.
- Confirm the phone number that you’re sending the messages to is correct and valid. You may have entered a few wrong digits or the wrong code that’s sending the message to a non-existent number.
- Check whether your carrier supports SMS, MMS, or RCS messaging.
- Verify that Messages is your default text messaging app.
- Ensure your SIM card is inserted properly into the port. If it is, check your device’s status or notification bar to see whether the mobile network is active. If you get the “No SIM card” message, reinsert the SIM card and try again, but if your phone still won’t detect the SIM card, try it on another phone or contact your network provider.
- Restart your phone to refresh it in case of endless loops or glitches and install any operating system updates that Messages app needs.
- Disable Airplane Mode. When Airplane Mode is enabled, it shuts down every form of wireless communication so you can’t make or receive calls, or even send and receive text messages. To disable Airplane Mode, open Settings > Connections > Flight Mode and switch it to Off.
- Quit and restart Messages app on your device to solve any memory management problems that may be hindering you from sending text messages from your device.
- Update Android to fix any bugs or repair any issues related to the Messages app and then try sending text messages again. Depending on your Android device model, you can update the operating system by going to Settings > Software Update and install any pending updates or Settings > System > Advanced > System Update.
- Update the messaging app to resolve any bugs or obscure issues preventing you from sending text messages.
1. Check Blocked Numbers
If you can’t send text messages to one person, it could be that their number is blocked.
- To check if it’s blocked, open Contacts, tap on the person’s name and check for the Block icon (circle with a diagonal line) next to the name or number.
- Tap the three dots at the top right side of your screen and then tap Unblock to start sending text messages to the person again.
Note: It could be that the other person has also blocked you, which means you may be able to send but they won’t receive your message. Also, someone might not be responding to you, thus giving you the impression that your messages aren’t going through.
- You can enable Read Receipts to confirm that someone has received your text messages. Open Messages tap the three dots and then tap Settings > More Settings > Text Messages and toggle the Delivery Reports switch to enable Read Receipts.
2. Clear Your Text Message App’s Cache and Data
Clearing the cache helps refresh and remove any glitches in the Messages app.
- To clear the cache, open Settings > Apps and tap Messages (or your Messaging app).
- Tap Storage.
- Next, tap Clear Cache.
- To clear the app’s data, tap Clear data and then tap OK to confirm the action.
Restart your device and then try sending the text messages again.
3. Reset SMS Settings to Default
If you swapped SIM cards before the problem started, it’s possible that the default SMS settings changed. This poses a challenge when sending text messages because every service provider has different/unique preferences that allows them to send messages properly.
- To reset SMS settings back to default, open Messages app on your phone and tap Settings.
- Reset all the options to default, restart your device and try to send a text message again.
4. Check SMSC
The SMSC or Message Center Number is akin to the Access Point Names (APN) that you need for mobile internet connections. SMSC is unique to each network operator and helps you send text messages.
- To check the SMSC on your device, open Messages app and then tap the three dots on the right side of your screen to open the Settings.
- Tap More Settings.
- Next, tap Text Messages.
- Check the Message Centre at the bottom to see your carrier’s message centre phone number.
Note: You can also check the operator’s website to compare with the message center number on your phone. If yours is different or missing, enter it in the Message Centre field and then tap OK to save it.
If you still can’t send text messages from Android after trying the previous fixes, contact your service provider for assistance.
Restore Communication with Your Contacts
If you’ve tried all the above checks and fixes and your Android device still won’t send text messages, take it for repair or check with your mobile carrier for further assistance. Know of any other tricks to fix the inability to send text messages from Android? Share with us in the comments.
