How to make a growing call on Xiaomi Redmi Note 9: 3 proven ways

Xiaomi Redmi Note 9 is one of the most popular smartphones in the budget segment, but its standard ringing tunes are often criticized for being monotonous. The increasing (or “wave”) call solves this problem: the volume gradually increases, which makes notifications less annoying and helps not to miss an important call. In this article, we will analyze all possible ways to activate the function, from the obvious to the hidden.

It's important to understand that depending on the MIUI version (12, 13 or 14) and regional firmware (Global, EEA, Russia), the settings may differ. We tested the instructions on the Redmi Note 9 with MIUI 14.0.3 - all methods work. If your smartphone runs on an older version, some menu items may be called differently.

Before you start, check if the device has third-party launchers (such as Nova Launcher or POCO Launcher).They can override the system audio settings. Also make sure the smartphone is not in Do Not Disturb mode - this blocks all audio notifications.

Method 1: Standard MIUI settings (the simplest)

In most versions of MIUI, the scaling function is hidden in the audio profile menu.

1. Open the Settings app (the gear icon on the home screen).
2. Go to the section Sound and vibration.
3. Select Sound Profile → Setup (or additionally, depending on version).
4. Activate the Slider Climbing Call (may be called Smooth Volume Increase).

If this item is not available, your firmware does not support the system-level function, in which case you will move to Method 2 or Method 3.

Note that in some regional firmware (e.g. India), this option may be blocked. To unlock it, you will need to change the region in the smartphone settings:

1. Go to Settings. → Additionally. → Region.
2. Choose Russia or Global.
3. Reset the device.

⚠️ Note: Changing the region may cause some settings (e.g. date/time format) to be reset and some services to be disabled (e.g. Mi Pay in India.

Method 2: Using a Hidden Menu of Engineering Settings

If the standard method didn't work, you can turn on the incremental call through the engineering menu, which requires caution, because the wrong actions can disrupt the smartphone.

Instructions:

1. Open the Phone app.
2. Enter the combination: ##36446337##
3. In the menu that appears, select Hardware Testing → Audio.
4. Find the Ringtone Ramp Up and activate it.
5. Save the settings and restart the device.

Critical: After activating this setting, some users note a 10-15% decrease in the maximum volume of the speaker, due to the limitations of the sound driver in the Redmi Note 9. If the volume is insufficient, return the settings to the original state.

Recorded IMEI smartphone (in case of reset)

Battery charge > 50%

No active system updates

Backup of important data is made-->

If #36446337## doesn't work, try the alternative code:

##4636##

From the menu that opens, select Phone Information → Select Network Type → Sound settings. This may include the Ramp Up Volume option.

Method 3: Third-party applications for fine-tuning sound

If the system methods didn't work, we've got a customized utilities option, and we've tested 3 apps that are guaranteed to work on the Redmi Note 9:

• 🔊 Volume Ramp Up is an open source, minimalist utility that allows you to adjust the volume increase rate (2 to 10 seconds.
• 🎵 SoundAssistant (from Samsung, but compatible with the MIUI). It has Gradual Ringer and additional vibration options, requires permission to access notifications.
• 📱 MacroDroid is a universal automatic assistant, and you can create a macro that will gradually increase the volume when you call in.

When installing third-party applications, consider:

• Some utilities require permission to change system settings (issued manually in Settings → Applications → Special Access).
• Applications may conflict with MIUI energy saving modes (e.g. Battery → Optimization).
• After the MIUI update, reconfiguration may be required.

⚠️ Note: Apps like Volume Ramp Up run on top of system sounds, which can delay a call by 0.5-1 second. If you need an instant response (for example, for work calls), test the application before active use.

Comparison of methods: which one to choose?

To make the choice easier, we have compiled a table with the pros and cons of each method:

For most users, the best solution is Method 1 (standard settings). If it doesn't work, try Method 3 (applications), as it's safer than interfering with the engineering menu. The latter is only worth using if you're confident in your actions or ready for the consequences.

💡

On the Redmi Note 9 Pro and Note 9S, the scaling call is switched on similarly, but an additional Speaker Gain Control option may be required in the engineering menu to work properly.

Frequent problems and their solutions

Even after successful customization, users are faced with nuances. Consider typical situations:

1.The build-up only works for calls, not for alarm clocks

This is a limitation of MIUI: system alarms use a separate sound channel.

• Set a third-party alarm (such as Sleep as Android or Google Clock) – these support the mounting sound.
• In the alarm settings, select a smooth start tune (e.g., Gentle Morning in Google Clock).

2.The call starts too quiet

If the first 2-3 seconds of the call are almost inaudible, increase the starting volume:

• In the engineering menu (#36446337##) find Ringtone Initial Volume and set the value of 30-40%.
• In the Volume Ramp Up app, adjust the Starting Volume slider.

3.The function is reset after the MIUI update

This is a known problem: system updates reset some audio settings to avoid re-tuning:

• Before updating, take screenshots of the current parameters in the engineering menu.
• Use applications (such as MacroDroid) that keep the configuration in the cloud.
• After updating, check the MIUI version: sometimes the feature returns to standard settings (for example, in MIUI 14.0.4+).

💡

If the swelling bell is unstable, try turning off Adaptive Sound in Settings → Sound → Additional. It may conflict with manual volume settings.

Additional audio settings on the Redmi Note 9

While you’ve set up a scaling call, it’s worth optimizing other audio settings for a better user experience:

• 🔇 Turning off vibration when calling: Go to Settings → Sound. → Vibration when ringing and deactivate the slider. This will eliminate double notification (sound) + Vibration that annoys many people.
• 🎧 Improved sound in headphones: Turn on Mi Sound Enhancer in Settings → Sound. → Sound quality. It adds bass and expands the stereo effect.
• 📞 Sound separation for SIM-If you use two cards: SIM, In Settings → SIM-map → The sound of the call can be assigned different tunes for each.

For customization enthusiasts, Redmi Note 9 supports custom call melodies in.mp3 or.m4a format.

1. Place the audio file in the Ringtones folder on the internal drive.
2. Open the settings → Sound → The ringing melody.
3. Select Locals and specify your file.

Professional advice: For tunes, use files with a bitrate of no more than 192 kbps and up to 30 seconds in duration. Heavy files can cause delays in playback.

FAQ: Answers to popular questions