Mobile messages remain one of the most popular methods of communication, despite the abundance of instant messengers. The operating system Android 8.0 Oreo brought significant changes to the operation of standard applications, including managing text messaging. Users often find themselves needing to change the default app, configure notifications, or resolve message delivery issues while roaming. Understanding the system architecture on this version of the OS allows you to flexibly manage incoming and outgoing traffic.
In this version of the operating system, Google relied on unifying interfaces and improving security. The standard application Messages has received support for the RCS protocol, although its activation depends on the telecom operator. Incorrect configuration of network parameters or a failure in access rights can lead to important notifications from banks or services simply not reaching the recipient. Therefore, competent initial configuration is a critical stage in the operation of the device.
The configuration process does not require deep technical knowledge, but attention to detail is required. We will consider not only the basic steps of choosing a app, but also the intricacies of working with SIM cards in dual-slot devices. We will pay special attention to filtering unwanted content, as spam attacks are becoming more sophisticated. By following the recommendations below, you can optimize the performance of your smartphone to suit your personal needs.
Selecting and installing a messaging application
The first step in organizing comfortable correspondence is choosing the appropriate software. In the ecosystem Android 8 the user has every right to refuse a pre-installed solution in favor of a third-party analogue. App stores offer dozens of options, from minimalistic to feature-laden. However, for stable operation of the system, it is important that the selected application is compatible with the current firmware version.
After installing a new app, it must be assigned as the default message handler. Without this step, the system will continue to redirect incoming signals to the old application, and new sending attempts may be blocked. To perform this operation, go to section Settings → Applications and notifications → Default applications. In the list that opens, find the “App for SMS” item and select the desired option from the drop-down menu.
- 📱 Google Messages —a reference solution with support for smart sorting and a dark theme.
- 💬 Textra SMS —a powerful processor with flexible customization of the interface and scheduler.
- 🛡️ Silent SMS —a specialized client focused on privacy and encryption.
- ⚡ QKSMS —open software with a minimalistic design and a night mode.
It is worth noting that some smartphone manufacturers such like Samsung or Xiaomi, may have their own shell solutions. They are often deeply integrated into the system, which allows them to work more stable than third-party counterparts in conditions of aggressive battery saving. If you don't feel comfortable with the standard interface, replacing the app may be unnecessary. The main thing is to make sure that the selected software has all the necessary permissions to work with the network and contacts.
⚠️ Attention: When you change the default application, the correspondence history is not transferred automatically. Before switching to a new client, be sure to back up your data through the settings of the old application or cloud services so as not to lose important conversations.
Basic configuration and delivery parameters
After selecting the main tool, you need to check the technical parameters of sending. Hidden in the settings menu of a specific application are keys that control how the system behaves when sending long texts or working in weak signal areas. By default, many devices are configured to split a long message into several parts, which can lead to the recipient receiving them in the wrong order or double debiting.
To change these settings, open the menu of the selected application (usually three dots in the corner of the screen) and select section Settings. Find the item responsible for “Long messages” or “Input mode”. It is recommended to switch the mode to Combine into one MMS or “Send as one message”, if your tariff plan allows it. This ensures that the recipient sees the text as a single block, and not as a set of disparate fragments.
Also in this section you often find settings for delivery reports. Activating this feature allows you to see the “Delivered” status under each sent message. This is especially useful for business correspondence or sending important verification codes. However, it is worth considering that constantly polling the network about the status of a message may slightly increase battery consumption.
If you often send messages abroad, check in the roaming settings whether the “International messages” option is enabled. Some operators block them by default to protect against accidental spending.
Setting up notifications deserves special attention. B Android Oreo a system of notification channels was introduced, allowing you to configure sounds and vibration in detail for different types of events. You can assign a unique sound for messages from contacts from your favorite list, so you don't miss a call from a loved one, even in a noisy room. To do this, go to Settings → Sound and vibration → Advanced → Default notification sound or configure it directly in the menu of the message application itself.
Working with multiple SIM cards
Owners of smartphones with support for two and more SIM cards are faced with the need to differentiate message flows. The system Android 8 provides convenient tools for managing this process, allowing you to assign a specific SIM card to certain contacts or message types. This helps to optimize costs by using a more favorable tariff for personal needs and a corporate number for work.
Priorities are configured through the system menu. Go to Settings → Network and Internet → Dual SIM cards (the name may vary depending on the model, for example, “Manage SIM cards”). Here you will see a Messages section where you can select a default card. When you try to send a new message, the system will automatically substitute the selected SIM card, but will allow you to change it manually before sending by clicking on the SIM icon in the input field.
| Settings parameter | Function description | Recommended value |
|---|---|---|
| Default SIM card | Card used for all new conversations | Basic tariff (cheap minutes/SMS) |
| Request when sending | The system asks for card selection before each message | Enabled (for cost control) |
| Message marking | Color designation of the sender in the dialog list | Enabled (for visual distinction) |
| Data roaming | Permission to use a second card while roaming | Disabled (to avoid charges) |
It is important to correctly configure the display of contacts associated with different numbers. If the same person is registered with you twice (on a work and personal number), the system can create two separate dialogues. Modern launchers and messaging applications can combine such branches, but to do this you need to make sure that the numbers in the contact book are correctly linked to one person’s card. This will make it easier to navigate through the correspondence history.
☑️ Checking the settings of two SIM cards
Blocking spam and unwanted contacts
The problem of intrusive advertising and fraudulent mailings is more relevant than ever. Built-in protection mechanisms allow you to effectively filter the incoming stream without requiring the installation of heavy third-party antiviruses. The basic blocking function works on the basis of blacklists, where you can manually add numbers or entire prefixes typical for spam mailings. Android 8.0 allow you to effectively filter the incoming stream without requiring the installation of heavy third-party antiviruses. The basic blocking function works on the basis of blacklists, where you can manually add numbers or entire prefixes that are typical for spam mailings.
To add a number to the blacklist, open a dialogue with an unwanted interlocutor, click on the menu (three dots) and select Block number. After this, all messages from this sender will be hidden in a special “Blocked” folder or simply rejected, depending on the application settings. You can periodically review this folder to make sure that important notifications from delivery services or banks do not end up there due to changes in their service numbers.
A more advanced method is to use the “Anti-spam” function, which is often integrated into services Google Play Protect. It automatically analyzes incoming messages for phishing links and known spam databases. To activate, go to the settings of the messages application and find the “Anti-spam” switch. Activating this option requires access to the Internet to compare databases in real time.
⚠️ Attention: Do not follow links from messages from unknown numbers, even if they are disguised as official mailings from banks or government agencies. Fraudsters often use number substitution (spoofing), and blocking by number may not work if the source is constantly changing.
For maximum efficiency, it is recommended to combine automatic filtering with manual moderation. Empty your spam folder regularly, as filling it up in rare cases can affect the app's functionality. Also be careful about blocking short numbers through which confirmation codes are received. If you accidentally blocked such a service gateway, it may be difficult to restore access to your accounts without visiting the telecom operator.
What to do if an important number is in spam?
Go to the message application settings, find the “Blocked numbers” or “Spam” section. Find the number you want in the list and select the “Unblock” or “Not Spam” option. After this, messages from this sender will begin to arrive in the main mailbox again.
Synchronization and backup of correspondence
The loss of a smartphone or a system failure should not cause the loss of important information. B Android 8 backup mechanisms have become more transparent and reliable. The standard application Google Messages offers a built-in synchronization function with your account's cloud storage, which allows you to restore your correspondence history when moving to a new device or after resetting the settings.
To enable this function, you must log into your Google account and open the application settings. In the section Additional or Backup Activate the sync switch. The system will automatically upload copies of messages to the server when connected to Wi-Fi. This is especially convenient as it does not require user intervention and works in the background, saving mobile traffic.
If you use third-party applications that do not support cloud synchronization, you will have to resort to local saving methods. There are utilities that allow you to download the SMS database into XML format. This file can be saved to a memory card or sent to yourself by email. In case of data loss, recovery will require installing a special importer application that will read this file and return messages to the system.
- ☁️ Google One - a comprehensive solution for backing up the entire device, including SMS.
- 💾 SMS Backup & Restore - a popular third-party application for creating local copies.
- 🔄 Smart Switch - Samsung proprietary utility for transferring data between devices brand.
- 📂 File management —manual database search (requires root access, not recommended for beginners).
It is important to remember to periodically check the functionality of backup copies. The presence of a file does not guarantee its integrity. Every few months, try restoring the test message on another device or emulator to make sure that the archiving process is proceeding correctly. This will save you from an unpleasant surprise at a critical moment, when you urgently need to find an old code or address.
Automatic synchronization with a Google account is the most reliable way to protect data, since it does not depend on the physical safety of the phone and works transparently for the user.
Solving common delivery problems
Even If configured correctly, users may encounter a situation where messages are not sent or received. B Android Oreo one of the common reasons is an aggressive energy-saving policy that puts background application processes to sleep. If the message app is unloaded from memory immediately after sending, delivery confirmation may not be received and the status will be stuck at the Sending stage.
To resolve this issue, you must exclude the app from battery optimization. Go to Settings → Applications → Messages → Battery and select the “No restrictions” or “Do not optimize” mode. This will allow the app to constantly maintain a connection to the network and quickly process incoming data packets. Also check to see if Do Not Disturb mode is turned on, which can hide notifications of new messages, creating the illusion of their absence.
Another common problem is that the memory of the application itself is full. Old software versions or incorrect cache operation may cause the message database to reach its size limit. Clearing the cache through the app menu often solves the problem of freezing. If this does not help, you may need to completely reset the application settings, but remember that this will delete all local chat history if it has not been saved in the cloud.
⚠️ Attention: Settings interfaces may vary slightly depending on the smartphone manufacturer (Samsung, Huawei, Xiaomi). If you do not find the specified item in the menu, use the search in the settings by entering the keyword “SMS” or “Messages.”
In cases where the problem is global (SMS messages are not received from anyone), it is worth checking the settings of the message center (SMSC). This parameter is usually set automatically by the operator, but if you change the SIM card or manual intervention, it may get lost. You can enter the correct message center number through the engineering menu or special USSD commands provided by your telecom operator. Up-to-date data can always be found in your personal account or on the official website of the service provider.
Before contacting the service center due to problems with SMS, be sure to restart your phone in safe mode. If messages work in this mode, then one of the third-party applications you installed is causing the problem.
Frequently asked questions (FAQ)
Why are my messages sent as MMS instead of regular SMS?
This happens when the message text exceeds the character limit for one SMS (usually 160 characters for Latin or 70 for Cyrillic), and the option to automatically convert to MMS for merging is enabled in the settings text. This can also happen when sending pictures or audio files. Check the message length settings in the application.
How to hide the message text on the lock screen in Android 8?
Go to Settings → Sound and notifications → Notifications on the lock screen. Select the option "Hide sensitive notifications" or "Show icons only." This will prevent strangers from reading the text of messages when the phone is lying on the table.
Is it possible to recover deleted SMS without a backup copy?
Without a previously created backup copy, it is extremely difficult to recover deleted messages, and often impossible. This function is not provided by standard system tools. There are paid apps for data recovery, but their effectiveness is not guaranteed and depends on whether the phone’s memory was overwritten after deletion.
Why don’t you receive confirmation codes from banks?
Most often, such messages are blocked by the built-in spam filter or end up in the Spam folder. Check this folder in the Messages app. Also make sure that the bank number is not accidentally added to the blacklist. If the problem persists, contact the bank's support to check the status of the mailing on their side.
Does replacing the SMS application affect the cost of sending messages?
No, the application itself does not affect the tariff. The cost is determined solely by your carrier and data plan. However, some applications may default to sending long texts as MMS, which are charged more than regular SMS, so it is important to monitor the sending format settings.