Voicemail is an indispensable tool for those who are often in areas of poor reception or simply cannot answer the call right now. Despite the abundance of instant messengers, the classic answering machine remains the standard for business and personal communication, allowing subscribers to leave important messages when you are unavailable. Enabling this function on smartphones running Android may seem like a confusing process due to differences in shell interfaces and mobile operator policies.
The main difficulty is that voicemail it is often not activated automatically when purchasing a SIM card or requires specific configuration through the “Phone” system application. Users are faced with situations when the caller hears beeps, but does not get an answering machine, or the function is completely blocked by the tariff plan. In this article, we will analyze in detail all the ways to activate the service, from universal USSD codes to deep settings in the smartphone menu.
Preparing for setup requires understanding that answering machine management is divided into two levels: server (on the part of the telecom operator) and client (your device settings). If the server part is not connected, no manipulations in the phone Settings menu will produce results. Therefore, the first step should always be to check the service status with your telecom provider.
Checking the status of the service with a mobile operator
Before delving into the depths of the operating system Android, you need to make sure that your tariff plan supports the Voicemail service. For most large operators, this function may be paid or require prior activation through your personal account. Ignoring this step is the most common reason why users believe that their phone is “broken” or does not support the function.
The fastest way to check and activate the service is to use USSD codes. These character combinations send a request directly to the operator’s server, bypassing the Internet connection. The codes are individual for each provider, so there is no universal combination for all networks. Typically, information about current codes is indicated on the operator’s official website in the “Services” or “Help” section.
⚠️ Attention: Some operators charge a monthly fee for storing messages on the server or for listening to incoming messages. Be sure to check rates before activating to avoid unexpected charges.
After sending the activation code, you will usually receive an SMS confirmation. Only after receiving such a message does it make sense to proceed to setting up an answering machine number in the smartphone itself. If the code gives an error or the service cannot be activated, your tariff may be archival or corporate with limited functionality.
Save the USSD voicemail activation code in notes or contacts under the name “Answering Machine” to quickly restore the service if your phone settings fail.
Setting up an answering machine number in the Phone application
The central element of call control in Android is the system application Phone (or Dialer). This is where the number is registered to which the call is forwarded when the line is busy or the subscriber does not answer. In pure Android and shells from Samsung, Xiaomi the paths to these settings may differ slightly, but the logic remains the same.
First, open the dialer app and look for the menu hidden behind the three dots in the corner of the screen or the gear icon. You need to go to section Settings, and then select item Additional settings or Call settings. In this menu there will be an item “Voicemail” or “Answering Machine”. By clicking on it, you will see a field for entering a number.
- 📞 The number field often already contains the service number of your operator by default, which you can simply save.
- ⚙️ If the field is empty, enter the number received from the operator (often this is a short number like 0500 or a long landline number).
- 🔄 When changing the number, the system may request confirmation to reconfigure call forwarding - agree to this action.
It is important to note that in modern versions of Android the settings may be different on different tabs depending on the type of SIM card, if you are using a dual-SIM device. Make sure that you configure voicemail number exactly for the SIM card on which you plan to receive calls. An error in choosing a SIM slot will result in calls being forwarded to one card, but not to the other.
Using USSD codes to control forwarding
If you cannot set up a number through the phone menu or the settings are reset, the most reliable method remains manually controlling forwarding via network engineer commands. These codes allow you to directly interact with the operator's switchboard, setting the conditions under which the call goes to an answering machine. This is especially true for older smartphone models or custom firmware.
There is a basic set of commands that work in most GSM networks. They allow you to enable call forwarding when the number is busy, when the subscriber does not answer, or when the phone is turned off. These codes are entered directly into the dialing field, just like a regular call. After entering the code and pressing the call button, you will see a pop-up window confirming the registration of the service.
**61*answering machine number#This command activates call forwarding if you do not answer the phone. Instead answering machine number you need to substitute the service number of your operator. It is also useful to know the shutdown command to urgently stop call redirection: ##61#. Using these commands requires care, as an error in one digit can redirect your calls to someone else's number or non-existent address.
⚠️ Attention: When using USSD codes, make sure that you have a positive account balance. Some operators block changes to forwarding settings if there is a negative balance or debt.
After entering the commands, it is recommended to check the status of all forwardings using the universal status request code: #002# or #21#. These commands will display information about where exactly your calls are going in various scenarios. If you see an unfamiliar number, immediately reset the settings to factory settings using the code ##002#.
What should you do if the code gives a connection error?
A connection error when entering a USSD code often means that the command is not supported in roaming or on the current network (for example, when using VoLTE). Try temporarily switching the network type to 2G/3G in the mobile data settings and try again.
Setting features on different Android shells
Smartphone developers often modify the standard “Phone” application, adding their own functions or changing the menu structure. This creates a situation where the instructions for “pure” Android are not suitable for owners of devices from specific brands. Understanding these differences saves time and stress when searching for that coveted setup button.
Below is a table showing the differences in access paths to voicemail settings on popular shells. Please note that the names of items may change after software updates, so be guided by the meaning of the sections.
| Brand / Shell | Path to settings | Features |
|---|---|---|
| Google Pixel (Stock Android) | Phone → Three dots → Settings → Voice mail | Integration with Google Assistant for transcription |
| Samsung (One UI) | Phone → Three dots → Settings → Additional settings → Voicemail | Often requires installation of a separate operator plugin |
| Xiaomi (MIUI/HyperOS) | Phone → Gear → Advanced settings → Voicemail | May be hidden in the “Operator Services” section |
| Huawei (EMUI) | Phone → Four dots → Settings → Calls → Voicemail | Interface may differ on older ones models |
On devices Samsung users are often faced with the need to download an additional application from the telecom operator. The system may offer to download it when you first enter the voicemail menu. This is normal practice, as proprietary applications provide better compatibility with the network features of a particular provider. Refusal to install such an application may lead to incorrect operation of notifications about new messages.
Smartphone owners Xiaomi should be attentive to permissions. MIUI is known for its aggressive power saving, which can kill background phone app processes. If voicemail is turned on, but notifications are not received, check the battery settings for the application Phone and allow it to run in the background.
☑️ Diagnosing problems with voicemail
Problems with forwarding and their solution
Even with the correct number settings, users may encounter a situation where the caller does not get to the answering machine. Most often, the problem lies in a conflict in the forwarding settings. In the mobile network, there is a priority of conditions: if forwarding is set to “always”, then the conditions “if busy” or “if there is no answer” are ignored by the system.
You need to check if you have unconditional forwarding to another number activated. This could have happened by accident or been configured previously for other purposes. To fix this, use a code ##002#that cancels all forwarding, and then reconfigure only voicemail through the phone menu or code **61*....
Another common cause of failure is Do Not Disturb or Airplane mode. In some Android implementations, if strict call filtering is enabled, the call may simply be rejected by the system before the forwarding mechanism to the operator's server is triggered. In such cases, the caller hears a short hang-up tone rather than an answering machine greeting.
⚠️ Warning: If you use third-party spam blocking applications, they may intercept calls and block them before the network transfers. Add your operator's voicemail number to the whitelist of such an application.
It is also worth considering technical work on the operator’s side. Sometimes voicemail services are temporarily disabled to allow equipment upgrades. In this case, no settings on the phone will help. The only solution is to wait or contact the provider's support service to clarify the time frame for restoring the service.
Resetting all forwarding settings with the code ##002# is the most effective first step in diagnosing any problems with the receipt of calls and the operation of the answering machine.
Alternative solutions and visual voicemail
Technology does not stand still, and classic voicemail is giving way to more modern solutions, such as Visual Voicemail (Visual voicemail). This technology allows you to see a list of voice messages directly in the dialing interface, select them for listening in any order, and even read a text transcript of what was said.
For visual mail to work, support from the operator and the presence of a corresponding function in the smartphone firmware are required. Owners Google Pixel and flagships Samsung often have access to this function out of the box. Activation occurs through the same settings menu, but requires an Internet connection to download the list of messages and transcribe them.
If your operator does not support native visual mail, you can use third-party applications from the store Google Play. Such applications work on the principle of forwarding a call to its server, where the message is recorded, processed and sent to you in the form of a notification or audio file. However, it is worth remembering that using third-party services means transferring your conversations to third parties.
How to set up forwarding if the phone is turned off?
To set up forwarding when the phone is turned off or there is no network, use the code **62*answering machine number#. This ensures that even if the battery is low or you are out of coverage, the caller will be able to leave a message.
Is it possible to change the voicemail greeting?
Yes, you can change the standard greeting to your own. To do this, you need to call the voicemail number, enter the PIN code (if installed) and follow the voice instructions in the answering machine menu to record a new message.
Why am I not receiving a notification about a new message?
Check your notification settings for the Phone application. They may be disabled in the system. Also make sure that the message storage on the answering machine number is not full, as old messages may block the reception of new ones.
Does voicemail work while roaming?
In international roaming, voicemail services may not work correctly or may be subject to roaming rates. Often forwarding to a short number of an operator in another country is impossible. It is recommended that you check with your operator before traveling.
How to reset your voicemail password?
If you have forgotten the PIN code to enter the answering machine menu, it cannot be reset through your phone settings. You need to contact the support service of your mobile operator, where, after identifying yourself, they will set a new default password for you.