How to make an auto call on Xiaomi Redmi 8: the complete guide

Budget smartphone owners often face limited standard dial functionality, especially when congested delivery lines, government agencies or service providers need to be accessed. Xiaomi Redmi 8, despite its popularity and reliability, does not have a built-in Autocall button in the standard MIUI interface, which creates certain inconveniences for users who value their time.

However, the lack of a visible option does not mean that you can’t do it. There are several proven ways to get around system limitations using both the hidden capabilities of the Android engine and specialized software from Google Play. In this article, we will discuss in detail how to set up automatic re-dialing, which applications are best for this purpose, and how to avoid blocking by the carrier.

The methods discussed are relevant for current versions of the MIUI shell installed on Redmi 8, and do not require obtaining superuser rights (Root), you can choose the most convenient option: from simple manual imitation to the use of smart algorithms that determine the beeps.

Standard capabilities and hidden codes of the engineer

Before you start installing third-party software, it makes sense to check if the desired function is activated in the depth of the system settings or through the engineering menu. Some versions of MIUI firmware for Redmi 8 contain hidden parameters that allow you to control the behavior of the modem when occupying the line.

One method is the use of USSD-It's codes that send a command directly to the SIM card or to the carrier's base station, but the effectiveness of this method depends greatly on your mobile operator and region. Try entering *#61# in your phone to check for redirect settings if the line is busy, although it’s not exactly an auto dial, but it can help redirect the call.

⚠️ Note: Entering unknown engineering codes in the #4636## menu without understanding their purpose may result in resetting network settings or changing your preferred network type, requiring additional recovery time.

If standard methods fail, which happens 90 percent of the time on global firmware, we move on to more efficient methods, and it's important to understand that automatic recalling is a feature that manufacturers often hide to avoid putting too much strain on the network.

Use of specialized applications for auto dialing

The most effective solution for owners of Xiaomi Redmi 8 is to install auto-dialer applications from the Google Play store. These programs take control of the communication module and perform repeated calls using a given algorithm, freeing you from the need to constantly press the call button.

A popular and time-tested solution is Auto Redial, which works on the principle of click emulation: the program "listens" to the call state and, if it hears the beeps or the signal is "busy", performs the necessary actions. The interface of such utilities is usually minimalist and understandable even to an inexperienced user.

• 📞 Auto Redial – a classic solution with flexible settings of intervals and number of attempts.
• 🔔 Call Repeater – an application that can distinguish between beeps and short busy beeps, which saves battery power.
• 🔄 ReDialer is a lightweight program, ideal for devices with small amounts of RAM, such as the Redmi 8.

When installing any of these applications, MIUI will immediately request a number of critical permissions, including phone access, contacts and, most importantly, permission to Display over other apps, without which the application will not be able to automatically press the reset or re-call button at the right time.

Step-by-step instruction for setting up an automatic re-call

Consider the setup process using a typical autodialer application, since the algorithm for most of them is identical. Once you set up and initially configure the permissions, you'll need to create a profile for a specific number or use the quick replay function of the last call.

Open the installed application and find the button to add a new task or set up a profile. In the number input field, enter the target phone number or select it from the phone book. Next, you need to configure the repetition settings: the interval between attempts and the maximum number of attempts.

Pay special attention to setting the interval. If you put too little value (for example, 1-2 The operator can consider such actions as a spam attack and temporarily block outgoing calls from your SIM card. 10 before 15 seconds.

Once you have set all the settings, press the Start or Start button. The application will fold into the background. Now, when the "busy" signal arrives or the call is completed, the program automatically initiates a new call. You will only have to wait for the connection and answer the call.

Analysis of popular solutions and their functionality

To make it easier for you to choose the right tool, we compared the main characteristics of popular auto dialing apps available for the Android platform and compatible with the Snapdragon 439 processor installed in Redmi 8.

As you can see from the table, low-weight applications like ReDialer often run more stable on budget devices because they consume less CPU resources in the background, an important factor for the Redmi 8, which doesn’t have excess power.

Having ads in free versions can be annoying, but it's often through advertising that developers support their projects. If you're critically important to a feature, it makes sense to consider buying a Pro version or using open source analogues.

Optimization of work in the MIUI system

The MIUI shell installed on Redmi 8 is known for its aggressive energy saving policy, which aims to shut down any application that is running in the background and is not system-based, which can interrupt the auto dialing process at the most inopportune moment.

To prevent a forced app shutdown, manually set your priority. Go to Settings → Battery and Performance (or simply Battery). Find your car dialer in the installed app list and change the mode from "Energy Saving" to "No Limits."

It is also recommended to fix the application in RAM. To do this, open the menu of running applications (swipe from the bottom up and hold or menu button), find the autodialer window, click on the lock icon or pull the card down until the lock symbol appears. This will prevent the system from unloading the program when cleaning the memory.

⚠️ Attention: Constant operation of the application in the background with active use of the microphone for analyzing sounds (horns) can lead to increased battery consumption.

Another important aspect is the permission to access the microphone. Some advanced car dialers use sound analysis to see if the beep is going, if it's busy, or if a live person has responded, and if you deny access to the microphone, the app will go into timer mode, which is less efficient.

Solution and technical nuances

Users may encounter a number of technical problems when using the auto dial feature, one of the most common being the application's lack of response to network signals, which may be because your carrier uses non-standard "busy" or "free" frequencies.

In this case, manual calibration will help. Many applications allow you to record the reference sound of a beep or a busy signal. Make a trial call and let the application analyze the audio track. This will improve the accuracy of the algorithm.

Another problem is operator blocking, and if you make too many unsuccessful attempts in a short period of time, the operator's antiphrode system may see this as an attack or spam, and as a result, incoming and outgoing attempts can be blocked from the operator's system. 15-30 minute.

• 🛑 Number locking - occurs when frequent call resets (less than a few) 3-5 second-to-second).
• 🔋 Battery discharge – Redmi 8 screen can often light up on each new call if the display is not configured to turn off.
• 📉 Internet speed drop – background activity can temporarily reduce data transfer speeds on networks 4G/LTE.

To minimize risks, it is recommended to take breaks, for example, after 10-15 minutes of continuous auto dialing, pause for 2-3 minutes, which will reduce the load on the network and reduce the likelihood of blocking.

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Use a headset or speakerphone if it can take a long time to wait for a connection. Some apps can automatically turn on speaker when you respond, which is very convenient if the phone is far away.

Frequently Asked Questions (FAQ)

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The main conclusion: for stable auto dial on Xiaomi Redmi 8 it is critically important to properly configure the application permissions and exclude it from the list of battery optimization in MIUI.