The mobile operating system Android 7 Nougat has become a landmark in the development of the platform, introducing users to many functions that we consider standard today. One of these features was the ability to select the default messaging application, which was previously unavailable without deep modification of the system. It was from this moment that setting up SMS ceased to be just entering a message center number and turned into a process of personalizing the interface and managing notifications.
Owners of devices running this OS version are often faced with the need to fine-tune communication services for the correct operation of multimedia messages or integration with cloud services. Incorrect configuration may cause notifications about new messages to become delayed or stop appearing on the lock screen altogether. Understanding the internal mechanisms of the communication module allows you to avoid most common errors. MMS will not arrive, and notifications of new messages will be delayed or will not appear on the lock screen at all. Understanding the internal mechanisms of the communication module allows you to avoid most common mistakes.
In this article we will analyze in detail all the setup steps, from software selection to hidden parameters available through the engineering menu. You'll learn how to manage application permissions, set up spam filters, and optimize power consumption so that no important messages are missed due to aggressive battery saving.
Selecting and installing the optimal SMS application
The first step in the process of modernizing communication on your smartphone is to abandon the standard, often stripped-down functionality of a stock application in favor of more advanced analogues. The mobile application market offers many solutions that not only look better, but also have powerful tools for sorting and protecting against unwanted mail. One of the most popular solutions is Google Messages, which provides cross-platform synchronization and intelligent filtering.
However, the choice is not limited only to products from Google. There are specialized clients, such as Textra SMS or Pulse SMSthat allow you to customize themes, fonts, and even send messages from your computer through a browser. It's important to consider that installing a new application is only half the battle; a critical step is the correct transfer of rights to manage the SIM card.
After installing the selected software, the system Android 7 will automatically request confirmation to use it as the main communication tool. If you missed this window or selected the wrong application, you will have to manually change the settings in the appropriate section of the system. Without this step, the new application will work in the background, but will not be able to intercept incoming messages or send new ones.
- 📱 Open the smartphone settings and go to the "Applications" section.
- ⚙️ Find the "Default applications" or "Application settings" item in the menu (three dots).
- 💬 Select category “SMS” and indicate the application you installed in the list.
- 🔒 Confirm the action in the pop-up dialog box.
⚠️ Attention: After changing the default application, old SMS may temporarily disappear from view, but they are still there. Simply return the old app to primary status to see the history, or wait a few minutes while the new client scans the database.
Use applications that support the RCS (Rich Communication Services) protocol if your operator and interlocutor support this technology. This will allow you to send high-quality photos and see the “printing” status as in popular instant messengers.
Basic configuration of network and MMS parameters
The correct operation of multimedia messages directly depends on the correctness of the entered parameters of the access point APN. Unlike regular SMS text messages, which are transmitted through cellular network signaling channels, MMS requires an active Internet connection. If your APN settings are incorrect or missing, an attempt to send a picture will fail, even if the mobile data is running in the browser.
Most often, the settings profile is loaded automatically when you first install a SIM card, but if you manually change the operator or flash the device, this procedure must be performed manually. The setup data can be found on the official website of your mobile operator or obtained by sending a special USSD code. Errors in the “MMS Proxy” or “APN Type” fields are the most common reason for the function not to work.
To check and edit the parameters, you must go to the mobile network settings. Here it is important to be careful when entering numeric values and addresses, since even an extra space can break the connection. After saving the profile, it is recommended to reboot the device to apply changes at the radio module level.
| Parameter | Value (example for MTS/Beeline) | Description |
|---|---|---|
| Name | MMS Internet | Custom name profile |
| APN | internet.mts.ru | Operator access point |
| MMSC | http://mmsc | Multimedia server address |
| APN type | default,supl,mms | Traffic types (required separated by commas) |
It is worth noting that in some cases, operators block MMS transmission when using non-standard access points or VPN connections. If you use block bypass tools, try disabling them temporarily to send media. Also make sure that your tariff plan does not exceed the Internet traffic limit, since MMS consume data packets.
What to do if MMS are not sent even with the correct settings?
Try switching the network mode. Go to Settings → Mobile networks → Network mode and select force 3G or 2G, send a message, and then select mode 4G/LTE. Sometimes this helps to update the communication session with the operator's gateway.
Permission management and battery optimization
One of the key features Android 7 Nougat has become a more aggressive policy for managing background processes, known as Doze mode. This system is designed to save battery power by limiting the activity of applications that the user is not currently using. Unfortunately, messengers and SMS clients often come under attack, stopping receiving messages until the screen is unlocked.
To avoid delays in receiving confirmation codes or important notifications, you need to add your SMS application to the list of exceptions of the energy saving system. This action will allow the app to work in the background without restrictions, constantly maintaining a connection with the operator's server. Without this step, the phone may fall asleep and lose data packets.
In addition, make sure that the application is granted all the necessary access rights. With modern versions of Android, security comes first, so installing a new SMS client won't automatically give it access to your contacts, phone, or storage without your explicit permission. Lack of rights to read contacts may interfere with the function of identifying the sender's name.
- 🔋 Go to
Settings → Battery → Battery saver. - 📲 Find your messaging application in the list.
- ✅ Select the "No restrictions" option or uncheck the energy saving option.
- 🛡️ Check the section
Applications → [Your application] → Permissions.
⚠️ Attention: Granting permissions to read SMS and contacts is a standard procedure for the full operation of any messenger. However, be careful and do not install suspicious applications from unknown developers that require excessive rights.
☑️ Checking the power saving settings
Setting up notifications and sounds
Visual and audio identification of incoming messages plays an important role, especially when the phone is in a bag or in another room. T Android 7 the notification system has been significantly redesigned, introducing grouping and priority. You can set up separate sounds for your Favorites contacts so you don't miss a call or message from a loved one in a noisy environment.
To change the tone, go to the settings of the messages application itself, and not the general sound scheme of the phone. Here you can choose a tune from the built-in library or upload your own audio file. Vibration settings are also available: you can create your own vibration pattern, which will be unique for SMS and different from the call signal.
Don't forget about the lock screen settings. You can choose to allow message text to appear directly on the lock screen, or hide the content for privacy purposes by showing only the sender's name. This is especially true if you often receive verification codes or private messages in public places.
Setting up a separate sound for important contacts allows you to instantly respond to urgent messages, even if the phone is in silent mode (subject to setting exceptions).
If you use third-party themes, make sure they are fully compatible with your version of the shell. Sometimes custom themes can override system notification settings, which is why the sound may not play or the message icon may not appear in the status bar.
Backup and transfer of messages
Saving correspondence history is a task that users often remember too late, for example, when buying a new smartphone or after resetting the settings. Standard tools Android allow you to create backup copies of data, including SMS, in cloud storage Google Drive. However, the recovery process may not be obvious and depends on whether the same Google account was used.
For a more reliable and flexible backup, it is recommended to use specialized utilities such as SMS Backup & Restore. These applications allow you to save correspondence in XML format directly to the phone's memory or send files to cloud drives (Dropbox, Google Drive). This approach gives complete control over the data and allows you to transfer message history even between devices from different manufacturers.
The recovery process usually takes several minutes, during which the phone may not respond to commands, as active recording is in progress in the database. Interrupting this process is strictly not recommended, as this can lead to damage to the database file mmssms.db and complete loss of all messages.
- 💾 Install a backup application on both devices.
- ☁️ Create a backup on your old phone and save the file to cloud.
- 📥 Download the file on the new device.
- 🔄 Start the recovery and wait for the process to complete.
⚠️ Attention: When restoring a large archive of messages (thousands of pieces), the process may take up to 30-40 minutes. Make sure that the phone is connected to the charger and has a stable Wi-Fi connection if using cloud storage.
Advanced settings and engineering menu
For advanced users who want to access hidden parameters of the radio module, it is possible to enter the engineering menu. T Android 7 access to these settings is often closed, but on many devices it is opened through a set of special codes in the Phone application. Here you can check the signal strength, switch the preferred network type, or reset the network settings to factory settings.
One of the useful functions available in some shells is blocking numbers at the system level. Unlike app lock, system lock prevents you from even trying to connect to your device. Here you can also find information about IMEI codes, SIM card status and the version of the base station to which you are connected.
Be extremely careful when changing parameters in the engineering menu. Incorrect changes may result in the phone no longer seeing the network or only working in emergency call mode. If you are not sure about the value of the parameter, it is better not to touch it or first take a screenshot of the current values.
##4636##The entered code opens the testing menu, where in the section Phone Information you can find a switch Turn off radio or selecting the preferred network type (LTE only, GSM only). This can be useful in areas of unstable reception to force the phone to stick to a certain communication standard.
How to exit the "LTE Only" mode?
If you turned on the mode LTE Only and incoming calls disappeared (since the voice is in 2G/3G), simply restart the phone or in the same menu select LTE/CDMA or GSM/WCDMA/LTE.
Solving typical problems with SMS delivery
Problems with message delivery can be both software and hardware in nature. If messages are not sent, first check your balance and signal availability. However, if the network is fine, the phone storage may be full. The message database has a limit, and when it is reached, new SMS cannot be saved, which causes a sending error.
A frequent cause of failures is a conflict between several installed SMS clients. Even if one of them is designated as the main one, background processes of the other can interfere with the operation of the communication module. In this case, completely clearing the data of the problematic application or deleting it helps.
It is also worth checking the date and time on the device. time out of sync even by a few minutes can lead to security certificate errors and failure to send messages through secure channels or MMS gateways. Automatic synchronization over the network usually solves this problem.
- 🗑️ Clear the cache and data in the Messages application.
- 📅 Check the automatic date and time settings.
- 📴 Remove and reinsert the SIM card.
- 🔄 Reset network settings in the system menu.
⚠️ Attention: Clearing the Messages app data will delete all local chat history if it has not been synchronized with the cloud. Be sure to make a backup copy before this procedure.
Why do SMS arrive with a delay on Android 7?
The delay is most often caused by the Doze power saving mode, which “puts the application to sleep.” The reason may also be congestion of the operator’s channels or a weak network signal. Check your battery settings and try switching the network mode.
How to recover deleted SMS without a backup?
Without a previously created backup, it is almost impossible to recover deleted messages, since Android immediately marks the memory space as free for writing. There is a chance only if you use specialized software to recover data immediately after deletion, before overwriting sectors.
Is it possible to send SMS via Wi-Fi on Android 7?
The native Wi-Fi Calling function and sending SMS via Wi-Fi appeared in large numbers later, but depends on operator support. If the operator supports VoWiFi technology, then SMS will be sent via Wi-Fi automatically in the absence of a cellular network, but when Wi-Fi is turned on.
What to do if codes from banks do not arrive?
Check whether the sender's number is blocked in the blacklist. Also make sure that your phone memory is not full. If the problem persists, contact the operator - sometimes short bank numbers are blocked by the operator's anti-virus filters.
Is it safe to store 2FA codes in SMS?
Storing codes in SMS is risky, since if the SIM card is hacked (SIM-swapping), an attacker will gain access to all your accounts. It is recommended to use authenticator applications, such as Google Authenticator, instead of SMS codes.