A modern smartphone has long ceased to be just a device for dialing a number via an operator’s SIM card. Today messengers and social networks they have taken on a huge part of the communication load, allowing you to communicate for free via the Internet. In Russia and the CIS countries, VKontakte remains one of the most popular tools for this. However, in order for voice and video communications to work without failures, it is necessary to correctly configure the application and operating system permissions Android.
Often users are faced with the fact that the interlocutor cannot be heard, the video freezes, or notifications about an incoming call do not arrive at all. It's not always the fault of bad internet. In most cases, the problem lies in privacy settings or energy saving that blocks background processes from running. Understanding how the permission system works in Android will help you avoid these problems.
In this article we will look in detail at how to prepare your device for high-quality communication. We will touch on the technical aspects of the microphone, data transfer quality settings and ways to optimize traffic. The key is to give the application full access to the microphone and camera, as well as to exclude it from strict power saving mode. Follow the instructions to ensure that your smartphone is always ready for an important conversation.
Basic requirements and device preparation
Before moving on to fine-tuning, make sure that your device meets the minimum technical requirements. For stable operation of video communication, you need not only a modern version of the operating system, but also a sufficient amount of free RAM. If the phone is overloaded with background tasks, the quality of the connection may drop sharply, even with fast Wi-Fi.
First of all, check the version of the installed application. Developers regularly release updates that fix bugs and improve audio compression codecs. Go to the store Google Play or AppGallery and make sure that you have the latest version of the VKontakte client. Older versions may use outdated communication protocols that work less well on modern networks.
- 📱 Make sure that the Android version is at least 7.0, as older systems may not support modern traffic encryption standards.
- 📶 Check the speed of your Internet connection: for video calls, a speed of at least 2 Mbit/s is recommended for upload and download.
- 💾 Free up 500 MB of free memory so that the application can create the necessary data exchange buffers.
It is also worth paying attention to the state of the speakers and microphone. Dirt in the speaker grille or a protective case covering the bottom of the smartphone can significantly impair speech intelligibility. Wipe the holes with a soft, dry cloth before starting an important conversation.
⚠️ Attention: The settings interface may vary slightly depending on the manufacturer of your smartphone (Xiaomi, Samsung, Huawei) and the Android shell version. Look for items that are similar in meaning if the exact name of the menu does not match.
Setting application permissions in Android
The most common cause of sound problems is the lack of necessary permissions. The operating system Android strictly controls application access to the hardware. If you accidentally denied access to the microphone during the first installation or after updating the system, the call will go through without sound.
To configure, go to the Settings section of your smartphone. Find item Applications or All applications. In the list that opens, find VKontakte (or VK). Click on it to open the application management page. Here we are interested in the section Permissions (Permissions).
In the list of permissions, make sure that the switches are in the active position for the following points:
- 🎤 Microphone: critical for transmitting your voice.
- 📷 Camera: needed for video calls.
- 📞 Phone: sometimes required to correctly end a call or integrate with contacts.
- 📁 Memory/Files: allows you to send photos and videos in chat during a conversation.
If an item is turned off, just click on it and select the option Allow or Allow only while in use. It is not recommended to select the option Denyas this will completely disable the communication functionality. After changing the settings, close the application completely and launch it again.
☑️ Checking permissions
Optimizing battery consumption and background work
Energy saving systems in modern smartphones work very aggressively. They aim to put to sleep any application that is not on the screen right now. This leads to the fact that an incoming call to VK may not go through while you are using another application or the screen is turned off.
To avoid missed calls, you need to add the application to exceptions. Go to Settings → Battery (or Power). Find the section Launch applications, Battery consumption by applications or Optimization batteries. Find in the list VKontakte.
Here you need to change the work strategy:
- Disable automatic control for VKontakte.
- Allow autostart and work in the background.
- If there is an option "Do not limit" or "No restrictions", select it.
These actions will allow the application to constantly maintain a connection with the server to instantly receive a signal about an incoming call. Without this, the phone may “lose” the application in the background, and you will only find out about the call after the fact, when the other party has already hung up.
Why do calls disappear after locking the screen?
This happens because the Android system forcibly closes background processes to save battery. If you do not give the application permission to work in the background, the operating system “freezes” the VK network activity, and the server cannot “reach” your phone until it is unlocked.
Adjusting the quality of sound and video inside the application
In addition to system settings, it is important to correctly configure the social network client itself. The application has built-in parameters that affect the quality of media content transmission. They are especially relevant if you have an unstable Internet.
Open the VKontakte application and go to the settings menu (usually three bars or a gear). Find the section Basic or Media. Here you can control the quality of uploaded photos and videos, but for calls, network settings are more important.
Pay attention to the following points:
- 📉 If the signal is weak, forcefully turn off the video at the beginning of the call to maintain sound quality.
- 🎧 Use a headset: the built-in speakers may create an echo that will disturb the interlocutor.
- 🔄 Regularly clear the application cache in the
Settings→Applications→Memorysection to avoid encoding errors.
It is also worth checking whether the “Traffic Saving” mode is enabled in the application itself. If it is active, the application will reduce the audio bitrate, which will make the robot's voice sound similar or choppy. For calls, it is better to use a Wi-Fi connection, since 4G/5G mobile networks may have limitations on ping stability.
| Parameter | Recommended value | Impact on call |
|---|---|---|
| Network type | Wi-Fi 5 GHz | Maximum stability and speed |
| Video resolution | HD (720p) | Balance between quality and traffic |
| Noise reduction | Enabled | Removes background noise in the room |
| Background mode | Allowed | Guarantees receipt of incoming messages |
If you often make calls via the mobile data, turn on the “Do not limit background data” mode for VK in your phone settings, otherwise the connection may be interrupted when switching the screen.
Solving problems with the microphone and speaker
The situation when they can’t hear you or you can’t hear the interlocutor can be caused by output device conflict. Android allows you to redirect audio to different devices, and sometimes failure occurs at this level.
During an active call, a control panel appears on the screen. Pay attention to the speaker icon. Click on it to see a list of available audio output devices. Make sure that the right one is selected: Phone speaker, Headphones or Bluetooth device.
It often happens that the phone “thinks” it is connected Bluetooth headphones that are in another room and send the sound there. In this case, there will be no sound on the phone screen. Force the output to your phone's speaker.
If the problem persists, check to see if another app is blocking access to the microphone. Some voice recorders or voice assistants can “capture” the microphone and not give it back to VK. Close all unnecessary applications through the running tasks menu.
⚠️ Attention: If the microphone does not work in any application (camera, voice recorder, VK), there may be a hardware failure or contact oxidation. In this case, software settings will not help.
Switching the sound source during a call through the speaker icon is the fastest way to solve the problem of silence if the device is technically working.
Frequent errors and ways to eliminate them
Even with correct settings, they can specific errors may occur. Users often encounter the fact that after updating Android, all access rights are reset, or antivirus software blocks the connection.
Let's consider a table with the most common problems and methods for solving them:
| Problem | Possible cause | Solution |
|---|---|---|
| Black screen when calling | Proximity sensor failure | Wipe the top of the screen, remove the film |
| The interlocutor hears an echo | Volume at maximum | Low volume, use headphones |
| Sound is interrupted | Wi-Fi channel overload | Switch to 4G mobile data |
| Video communication does not work | No access to camera | Check permissions in Android settings |
It is also worth mentioning the influence of VPN services. If you have a VPN enabled, traffic may go through servers in other countries, which increases ping (latency). For calls within the country, it is better to disable the VPN, as this often leads to desynchronization of audio and video.
In some cases, resetting the network settings helps. This won't delete your personal data, but it will reset your Wi-Fi and Bluetooth settings to factory defaults. The path to this function is usually located in Settings → System → Reset → Reset network settings.
Can a virus block calls?
Yes, some types of malware can intercept access to the microphone or block network connections of applications. If problems suddenly started after installing an unknown app, check your phone with an antivirus.
Additional tips for improving communication
For those who use VK calls for work or important negotiations, there are several professional life hacks. They will help make communication as clear and reliable as possible.
Use a wired headset instead of Bluetooth if communication quality is critical. Bluetooth compresses sound more, which can distort the timbre of your voice. Wired headphones provide a direct analog signal without loss.
If you are in an area of uncertain reception, try switching the phone to 4G only (or LTE). Sometimes the phone tries to “cling” to weak 3G, although 4G catches worse at this point, but more stable holds the packet data transfer required for VoIP calls.
- 🌐 Close background downloads (game updates, photo synchronization) to free up the channel.
- 🔋 Make sure that the battery charge is above 20%, since when the battery is low, some phones reduce the antenna power.
- 📍 When calling via Wi-Fi, move closer to the router, concrete walls greatly dampen the 5 GHz signal.
Following these simple rules will allow you to enjoy high-quality communication in any conditions. Remember that the software part is only half the success; the physical location of the device and the state of the network play an equally important role.
Why does the screen go blank during a call on VK and I can’t press the button?
It’s the proximity sensor, which is located next to the front camera, that works. It turns off the screen so you don't have to press reset or mute. If the screen goes out too early or does not turn on, the sensor may be dirty or there is a protective film covering it.
Is it possible to call VK without a SIM card?
Yes, a SIM card is not needed for calls via VKontakte. Any Internet connection (Wi-Fi) is sufficient. The application is authorized by your account, and not by your phone number, although the number is used during registration.
What should I do if the other person can’t hear me, although the microphone is enabled?
Try to restart the phone. Often the audio codec driver may freeze. If rebooting does not help, check whether a Bluetooth device is connected that intercepts sound, or whether the VK application is set to “Text Only” mode.
Does the version of the application affect the quality of calls?
Yes, directly. New versions contain updated codecs (for example, Opus), which better compress sound when the Internet is poor and more effectively suppress noise. Always keep the application updated.
How to enable a video call if there is only sound?
During a voice call, there is a button with a video camera image on the call control screen. Click on it to activate the video stream. The interlocutor must accept the request to turn on the video.