Modern Xiaomi smartphones offer users ample opportunities for communication, going far beyond the standard GSM-One of the most popular features for business and economic users is support. SIP-This technology allows you to make calls over the Internet, which is especially true if you have stable Wi-Fi connections or unlimited mobile traffic, SIP-telephony is integrated directly into a standard call, allowing you to use the usual interface for dialing a number.
Relevance of the setup SIP-device-account MIUI or HyperOS is driven by the ability to create full-fledged mobile communications where traditional cellular operators are not catching the signal well, but there is access to the network. IP-Telephony provides numbers of different cities, which allows you to save on long-distance communication. However, the process of integrating these settings into the Android system on the shell of Xiaomi has its own nuances that must be taken into account for stable operation.
In this guide, we will take a look at all the steps of connection, from preparing data from the provider to fine-tuning energy savings so that calls do not break, you will learn how to correctly enter server settings, login and password, and how to avoid the typical mistakes that beginners face in the first configuration.
Preparation for setup SIP-linkage
Before you start manipulating the smartphone menu, you need to get up-to-date data from your provider. IP-These are usually commercial organizations or corporate servers that give the user the user's login, password and server address, and without these three components, you can't set up the phone, because the phone doesn't know where to send the authorization request.
Make sure your device is connected to the Internet. For initial account registration and health checks, it is better to use a stable Wi-Fi connection. Mobile 4G/5G will also work, but in areas of uncertain reception, timeouts can occur when the server tries to respond to your Xiaomi registration request.
⚠️ Attention: Don't confuse SIP-VoLTE accounts. These are different technologies. SIP It works on top of any internet connection, whereas VoLTE requires support from your cellular carrier and plan.
It is also important to check in advance if the port used for the SIP-The standard port is often 5060, but providers can use other values to improve security or bypass restrictions.
Use of built-in SIP-Android client
The Android operating system underlying the MIUI, native-supported SIP-This means that you don't have to install third-party apps if you want to just call, but in newer versions of the shell, access to these settings may be hidden or require activation through special codes.
To access the hidden settings menu, you often need to enter a special code in the Phone app. Try dialing ##4636##. If the engineering test menu opens, look for SIP settings or Phone information. Here you can add a new profile by entering data received from the provider.
In some versions of Xiaomi firmware, this path can be blocked by the manufacturer, in which case the system will prompt you to select the default application to perform the task. SIP-If you try to add an account through the standard Android settings, if the built-in method doesn’t work, go to the section on third-party apps, as this is the most reliable way to go.
When entering data in a native client, look for the "Use compression" and "Use NAT" fields, which often require customization. If calls are coming but no sound, try changing the NAT to "Forced" or "Keep-alive."
What to do if the SIP menu is hidden?
Configuring through third-party applications
The most popular and stable solution for Xiaomi owners is the installation of specialized software, the market leader is the Grandstream Wave or 3CX application, as well as the classic Linphone, which takes over all the work of registering and maintaining a connection, bypassing the limitations of the system.
After installing an application, such as Grandstream Wave, the setup process is as follows:
- 📱 Launch the app and click the add a new account button (usually green plus).
- 📝 Enter. SIP Server (server address), Account Name (your login) and Password (password).
- 🌐 Please specify the transport protocol (UDP, TCP or TLS) according to the requirements of the provider.
- ✅ Press Save or Apple to save configuration.
An important advantage of third-party apps is that they have an embedded log, and if you don't sign up, you'll see the reason for that: "Authentication failed" or "Network unreachable" -- which makes it much easier to diagnose problems than a standard call.
☑️ Checking account settings
Optimization of MIUI energy saving
The most common problem faced by Xiaomi users when setting up SIP — No incoming calls when the screen is off. MIUI just kill the process SIP-To save battery life, you have to manually adjust the permissions to avoid this.
Go to Settings. → Annexes → All applications. Find yours. SIP-App (like Grandstream or system phone) Go to Activity Control or Energy Saving, select No Limits, a critical step that will not work without telephony.
Then you want to allow auto-start. In the same app settings menu, find Auto-Start and activate it. It's also recommended that you stick the app in memory: open the list of running apps, find the list of running apps. SIP-client, hold it or pull it down and press the lock icon, which will prevent it from being unloaded when the memory is cleared.
⚠️ Attention: After system update MIUI Energy saving settings may reset. Always check the status of permits for SIP-applications after a major firmware update.
For advanced users, it is useful to know that in some cases, it helps to include the option “Advanced Settings” in the developer menu, where you can turn off memory optimization. However, standard measures to set up auto-start and not have restrictions are usually enough for stable operation.
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Without setting “No restrictions” in the energy saving menu incoming SIP-Xiaomi’s screen calls won’t come.
Addressing common problems
Even with the right setup, there can be specific problems, one of them being one-way audibility (you hear the person you're talking to but they don't, or vice versa). NAT. In the application settings, try changing the transport with UDP on TCP or enable the option “Use Public” IP» (Use public IP), if there is such a thing as.
Another problem is re-registration, and if you see an infinite loop in your logs, "Registering... 403 Forbidden" or "401 Unauthorized," check if your password has changed or if your antivirus or firewall is blocking outgoing connections to port 5060.
Below is a table of error codes and their possible significance for rapid diagnosis:
| Error code | Probable cause | Decision |
|---|---|---|
| 401 Unauthorized | Wrong login or password | Check your account details |
| 403 Forbidden | Account blocked or inactive | Contact the provider |
| 404 Not Found | Wrong server address | Check the domain or IP server |
| Request Timeout | Network or firewall problems | Check the Internet and ports |
If you are using a corporate network, it is possible that the administrator has restricted the use of the network. SIP-In this case, only switching to a mobile network or using the protocol will help. VPN, Although the latter may cause delays in voice traffic.
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To diagnose a sound problem, try making a test call to the echo test number (usually 888 or 999) provided by your ISP to hear your voice.
Choice of codecs and sound quality
The quality of voice communication depends on the codec you choose. Codecs are compression and sound transmission algorithms. SIP-You will usually find a list of available codecs for a client on Xiaomi: G.711 (A-law/u-law), G.729, opus GSM.
The G.711 codec provides the best sound quality (HD Voice), but requires more (around 80-90 kbps. It is ideal for Wi-Fi connections. The G.729 codec compresses sound strongly, taking up only about 30 kbps, which is great for mobile Internet with unstable signal, but the voice quality will be lower.
It is recommended that the priority list of codecs put G.711 first, and the second one specify G.729 or Opus. Then, with a good connection, the phone will try to negotiate with the server about high quality, and if problems with the network, it will automatically switch to a lighter codec.
Remember, choosing a codec is a compromise, using broadband codecs like Opus or G.722 Only if you can do it. SIP-The provider and the interlocutor also support the HD-Otherwise, the connection will either fail or the default basic codec will be used.