HD icon next to the subscriber on Xiaomi: decryption, settings and problem solving

You noticed a strange badge. HD This little icon often raises questions about whether it's a high-quality indicator, or a sign of some hidden feature. In this article, we'll go into detail what it means. HD-badge on Redmi phones, POCO Mi, as it is associated with VoLTE and VoWiFi technologies, and what to do if it appears unexpectedly or, conversely, disappears at an important moment.

Let's just say: badge HD Xiaomi does NOT have to do with screen resolution or video quality — it’s just a marker of next-generation voice technology, and it depends on network settings, carrier support, and even your phone model. Next, you’ll learn how to check if you have these features enabled, why they might not work, and how to fix typical problems from lack of a home. HD-Calls before accidentally turning off the badge.

What the HD icon on Xiaomi means: technical decryption

The HD icon next to the contact signals that the call is made using one of the modern voice technologies:

• 📶 VoLTE (Voice over LTE) — voice-link 4G-network that provides clearer sound and faster connection.
• 📶 VoWiFi (Voice over Wi-Fi) – calls over Wi-Fi, useful in areas of weak mobile network coverage.
• 🔄 HD Voice - improved voice encoding (codecs) AMR-WB, EVS), which reduces noise and increases intelligibility.

Unlike traditional calls to 2G/3G, where the sound is compressed 8 kHz (narrowband audio), HD-call-ups use frequency 16 For example, when you talk on VoLTE, you will hear not only words, but also intonations, and background noises (wind, street hum) will be automatically suppressed.

Important: The HD icon will only appear if:

1. Your phone supports VoLTE/VoWiFi (most Xiaomi models since 2018).
2. The mobile operator provides these services (in Russia – MTS, Beeline, MegaFon, Tele2).
3. Functions are included in the phone settings and activated on SIM-map.

Why HD is not available in all contacts

Even if your Xiaomi supports VoLTE, the HD icon won’t always show up.

The icon may also disappear when:

• 🔋 Weak signal 4G — The phone automatically switches to 3G, where VoLTE is not available.
• ⚙️ Manually shut down VoLTE in settings (for example, to save battery).
• 📱 The use of two SIM-Cards – sometimes VoLTE works only on the main card SIM.

💡

If the badge HD flashes and disappears during the call, try to disable the Smart Network Switch function in the settings SIM-Cards – This can stabilize the connection.

How to turn on or off the HD icon on Xiaomi

If you want to manually control the display of an HD icon, follow this instruction. Please note that the settings may vary depending on the version of MIUI (the example below is for MIUI 12-14).

Open Settings → SIM-maps and mobile networks

Pick the right one. SIM-map

Enable VoLTE and VoWiFi switches

Reboot your phone (required!)

Check the badge HD call-book-->

For POCO or Redmi models with custom firmware, the path can look like this:

Settings → Connections and Sharing → Mobile Network → SIM-card name → Voice calls

If VoLTE/VoWiFi options are not available in the menu:

1. Check if your model supports these features (the list of compatible devices is available on the Xiaomi website).
2. Update the firmware to the latest version of MIUI.
3. Contact the operator – it may be necessary to activate the service on the SIM-map.

⚠️ Note: Some models (e.g. Redmi Note 8 Pro) may lose the Internet during a call after VoLTE is turned on. G90T. The solution is to use VoWiFi instead of VoLTE.

HD badge problems: common mistakes and solutions

If the HD icon doesn’t appear or doesn’t work properly, here are the most common reasons and ways to fix them:

1.HD badge is there, but the sound hasn't improved

This happens when an operator formally supports VoLTE but uses an outdated codec to check:

• Call ##4636## (Engineering Menu)
• Select Phone Information → Set preferred network type.
• Make sure that LTE only or LTE/WCDMA is active.

2.HD disappears after reboot

The network reset is to blame.

Settings → Memory → Settings → Reset network settings → Reset settings

Then turn on VoLTE again in the menu. SIM-map.

3.The HD badge flashes and disappears

The problem is unstable. 4G-- Check the signal:

• 📡 Signal level in the status line (must be at least 2-3 divisions).
• 🔄 Network mode: switch from Auto to Only LTE.
• 📶 Settings APN: Compare with the operator’s recommendations (for example, for MTS) APN It should be internet.mts.ru).

Differences HD-Calls to different Xiaomi models

Not all Xiaomi smartphones work the same with HD Voice technology, and here are the key features for the popular series:

On flagship models (such as Xiaomi 14), the HD icon can be displayed even when calling via WhatsApp or Telegram, if the Opus codec is used. On budget devices (such as the Redmi A2), the icon appears only for standard calls.

⚠️ Note: On phones with Qualcomm Snapdragon processor 4xx (Like Redmi. 9A) There may be a delay in connection HD-It's a hardware feature that you can't fix.

How to remove the HD icon if it interferes

For some users, the HD icon seems redundant or distracting, and you can remove it in two ways:

Method 1: Disable VoLTE/VoWiFi

This will cause the improved sound to be turned off, but the icon will disappear:

Settings → SIM- Maps and Mobile Networks → [Select SIM] → VoLTE/VoWiFi → Disable

Method 2: Hide the icon through the engineering menu

This method saves VoLTE, but removes the visual indicator, suitable for advanced users:

1. Enter the code ##4636##.
2. Go to the phone information.
3. Click on the three dots in the top right corner and select Settings.
4. Find the option to Show the VoLTE indicator and turn it off.

The HD icon will disappear, but calls will still be made via VoLTE/VoWiFi.

💡

Turning off the HD icon doesn't affect the quality of the connection, only the visual display. If you want to keep the sound better, use the second method (engineering menu).

FAQ: Frequent questions about the HD icon on Xiaomi