Sending text messages remains one of the most popular functions in mobile devices, despite the abundance of Internet instant messengers. Owners of devices based Android often face the need to quickly contact a subscriber who may not have access to the Internet, or to receive confirmation codes from banks and services. The standard procedure seems intuitive, but modern operating systems offer many hidden features and settings.
In this material we will analyze in detail the process of sending messages through standard system tools, and also consider the nuances of working with two SIM cards, which are installed in the vast majority of modern gadgets. You'll learn how to manage group mailings, set up autofill, and solve common delivery problems. Understanding these mechanisms will allow you to save time and avoid unnecessary costs for the services of cellular operators.
The interface of messaging applications may vary slightly depending on the manufacturer of your device. The company Samsung, for example, uses its own shell layer One UI, while Xiaomi and Realme use proprietary add-ons over the pure Android. Despite the visual differences, the logic of operation and key functions remain the same for the entire ecosystem.
Basic algorithm for sending a message
To start communicating, you will need to launch a pre-installed application, which is usually called “Messages”, “SMS” or has an icon in the form of a speech bubble. On clean versions of the system from Google this application is called - Google Messages. After opening the interface, you will see a button for creating a new conversation, which is most often located in the lower right corner of the screen and is indicated by a plus symbol or a pencil.
Click on this button to go to the mode for creating a new message. The system will prompt you to enter the recipient's phone number or select a contact from the address book. If you select an existing contact, the application will automatically fill in the number associated with that name. In case of manual entry, make sure that the number is entered correctly, especially if you are writing to an international number.
In the text input field located at the bottom of the screen, enter the content of your message. Modern keyboards offer predictive input and auto-correction features, which speed up the typing process. Once your text is ready, find the submit button, which usually looks like a paper airplane or arrow, and click on it. The message will instantly go to the operator's network.
- 📱 Make sure that there is an operator network icon in the status bar, otherwise the message will remain in the queue.
- ✍️ Use quick response templates for frequently used phrases to save time.
- 🔒 Check if airplane mode is turned on, which blocks all views communications.
If you often write to the same people, pin their chats at the top of the list so as not to search for them again every time.
Working with two SIM cards
The vast majority of smartphones on the market support technology Dual SIM, which allows you to use two different SIM cards at the same time. This creates an additional variable when sending messages: you need to choose which line the signal will go through. By default, the system can use the card that was selected for mobile data, or the one with which you last sent a message to this specific subscriber.
Before clicking the submit button, pay attention to the area next to the text input field. An icon of the active SIM card is usually displayed there, indicating its name or operator. By clicking on this icon, you can instantly switch to the second card. This is critically important if you have separate personal and work contacts, or if one of the cards has run out of balance.
In the application settings, you can set the default card for all outgoing messages. However, if you send a message to a number that you previously communicated with via another SIM card, the system may prompt you to select the line again or automatically switch to the usual one. Be careful when sending messages abroad so as not to charge the wrong tariff.
| Parameter | SIM card 1 (Primary) | SIM card 2 (Additional) |
|---|---|---|
| Operator | MTS / Beeline / Megafon | Tele2 / Yota / Tinkoff |
| Tariff type | Unlimited package | Package of minutes and SMS |
| Purpose | Personal calls and internet | Work issues |
| Status | Active | Active |
Group mailings and mass messages
The group sending function allows you to send the same message to several recipients at once. This is convenient for congratulating people on holidays or promptly notifying a group of people. To take advantage of this feature, in the address field, start typing contact names or phone numbers, separated by commas or choosing from a list of suggested options.
There is an important technical nuance that depends on the settings of your application. The message can be sent as a classic message, where all recipients see each other’s replies in the general chat, or as a series of individual messages, where each subscriber will receive an individual letter and will not see the other participants. The operating mode is determined in the application settings in the “Group messages” section. MMS mailing, where all recipients see each other's replies in a general chat, or as a series of separate SMS, where each subscriber will receive an individual letter and will not see the other participants. The operating mode is determined in the application settings in the “Group messages” section.
When sending mass messages, it is worth considering operator limits. Some tariff plans limit the number of SMS sent in a short period of time to prevent spam emails. If you plan to send a message to more than 10-20 contacts at the same time, it is better to break the mailing into several stages at short intervals.
⚠️ Attention: When the group chat mode (MMS) is enabled, deleting correspondence from yourself will not delete it from other participants. Also, for such messages, operators can charge for such messages as for Internet traffic or at special MMS tariffs.
What is the difference between SMS and MMS group?
In SMS mode, everyone receives a personal message, and replies come only to you. In MMS mode, a general chat is created where everyone can see the correspondence, but this requires an Internet connection and may cost more.
Application settings and personalization
Standard messaging applications have a wide range of settings that allow you to adapt them to the individual needs of the user. By going to the settings menu (usually three dots in the corner of the screen), you can change the font size, theme (light or dark) and notification behavior. This is especially true for people with low vision or those who prefer a specific visual style.
One of the useful features is the ability to block unwanted numbers and spam. Modern versions of applications use databases to automatically identify suspicious numbers and alert the user. You can manually add any contact to the blacklist, after which messages from it will stop coming or will be hidden in a separate folder.
It is also worth paying attention to the message storage settings. By default, the system can store them indefinitely, which over time takes up space in the device's memory. In the parameters you can set a limit on the number of messages in one thread, for example, 1000 pieces. When this limit is reached, the oldest messages will be automatically deleted.
- ⚙️ Change the theme to “Dark” for a comfortable reading of messages at night.
- 🚫 Turn on spam filtering to avoid receiving advertisements from unknown numbers.
- 💾 Set up automatic deletion of old messages to save money memory.
For advanced users, a function is available message templatesthat allows you to save frequently used texts. This significantly speeds up the work of couriers, taxi drivers or support employees who have to send standard phrases.
Advanced features: RCS and chat mode
Technology RCS (Rich Communication Services) is an evolution of classic SMS. It allows you to send high-quality messages, exchange large files, see the texting status of your interlocutor and read confirmation. The function works over the Internet, but is integrated directly into the messages application, without requiring the installation of third-party apps.
To activate this mode, you need to go to the application settings and find the “Chat functions” or “RCS” item. Once turned on, the system will try to register your number on Google servers. If the status changes to “Connected”, you will be able to communicate with other users who support this technology, as in modern instant messengers.
It is important to understand that if the interlocutor does not have an Internet connection or his phone does not support RCS, the message will automatically be sent as a regular SMS. This ensures seamless communication: you don't have to worry about which delivery method the system will choose, it will do it automatically depending on the available channels.
RCS technology requires a stable Internet connection (Wi-Fi or mobile data), otherwise messages will be sent in regular SMS format.
⚠️ Attention: When using RCS, messages may incur Internet traffic charges according to your tariff plan, although the messaging application itself is free.
Possible problems and methods for solving them
Sometimes users are faced with a situation where a message is not sent and hangs with the status “Sending” or “Error”. First of all, check your account balance and network availability. Even if the network icon is displayed, there may be temporary glitches on the operator's side. Try turning airplane mode on and off to reboot the radio.
The second common reason is application memory full. If the app's cache has accumulated too many temporary files, it may block the upload function from working. You can clear the cache through your phone settings in the “Applications” section, finding your message application there and selecting “Storage” -> “Clear cache.”
If the problem persists, check your message center (SMSC) number. This technical parameter is stored in the SIM card settings and tells the phone exactly where to send messages for further routing. Usually it is installed automatically, but when changing operators or firmware failures, it may fail.
Settings -> Applications -> Messages -> Additional settings -> Message CenterEnter the current message center number, which can be found on the official website of your mobile operator or by calling support. After saving the settings, try sending a test message.
☑️ Diagnosing a problem with sending
Frequently asked questions (FAQ)
Can I send SMS without the Internet on Android?
Yes, classic SMS messages are transmitted via cellular channels and do not require an Internet connection. However, RCS and multimedia sending (MMS) features require an active Wi-Fi or mobile data connection.
Why is the message sent as MMS instead of SMS?
This happens if you add a picture, video, or audio file to the text. Also, a message can be converted to MMS if its length exceeds the standard limit of 160 characters and the corresponding option is enabled in the settings, or if you are writing in a group chat.
How do I know if the recipient has read my message?
The read status is only available when using RCS (Chat) technology and if the recipient has also enabled this function. For regular SMS, read confirmation is technically impossible to obtain using standard means.
Is it possible to schedule a message to be sent at a specific time?
Yes, many modern applications, including Google Messages and Samsung shells, support this function. Typically, you need to press and hold the send button, after which a menu for selecting a delivery time will appear.
What to do if messages arrive with a delay?
Delays can be caused by a poor network signal, overload of operator channels, or problems on the server side. Try moving to an area with better reception or rebooting your phone. If the problem is widespread, you should contact your telecom operator.