When an important call is disrupted because a line is busy or the network is temporarily unavailable, it is familiar to every smartphone user, especially in business negotiations or emergency cases when the bill is for minutes. Owners of Android devices, in particular the popular shell MIUI and HyperOS, often wonder whether it is possible to automate the process of re-dialing, so as not to keep a finger on the call button.
Unfortunately, Xiaomi’s standard interface doesn’t have the obvious AutoCall button as it is in older push-button phones. However, it offers several powerful tools and hidden features that allow you to achieve the desired result. Understanding the system’s call settings will help you not miss any important connection.
In this guide, we will take a look at all the methods available, from regular re-typing functions to the use of engineering codes and third-party applications, and you will learn how to set up automatic re-call when a line is busy or a connection is reset, which will significantly simplify communication in conditions of poor network coverage.
Staffing opportunities for re-recruitment in MIUI
Before you get to the complex settings, it’s worth exploring the basic functionality that’s already built into the MIUI shell. The standard phone offers an automatic re-typing option, but it works a little differently than many users expect. This feature only activates after you’ve completed the call, and the system asks if you need to try again.
To activate this feature, you need to go to the phone's settings menu, and the path is usually this: open the Phone app, click three dots in the corner or the gear icon, select Settings, and look for the item associated with re-typing. In some firmware versions, this option may be called Automatic Re-Call.
⚠️ Note: The standard auto dial feature on Xiaomi often only works once after a conversation is over and requires your confirmation or is activated only if you hung up immediately.
It's important to understand the difference between repeating the last number and automatically dialing when busy. Staff repeat is useful if you accidentally dropped a call or the connection was interrupted at the end of a conversation. However, for constant checks of subscriber availability, this method may not be effective enough, since it requires user involvement after every unsuccessful attempt.
Setup of auto dial-up during line employment
One of the most popular features is the ability to automatically call back if the line is busy. Unlike simple repeaters, this mode requires more fine-tuning, since it is tied to signals from the carrier. On Xiaomi smartphones, the implementation of this functionality depends on the version of Android and the specific modification of the phone application.
Activating advanced features often requires access to a hidden call settings menu, which can be done through a special code that opens an engineering menu or advanced settings. SIM-In this section, you can find the parameters that determine how the phone behaves when it receives a busy signal».
- 📱 Open the Phone app and dial ##4636## to access the test menu (not working on all firmware).
- 📞 Go to the “Phone Information” or “Call Settings” section».
- ⚙️ Find the option “Additional settings” or “Extended settings».
- 🔄 Activate the “Autophone When Classing” option if it is available in your area.
It should be noted that carriers may or may not be able to block accurate line occupancy signals, making this function unstable. In such cases, the system may perceive the "busy" signal as a normal call reset. The accuracy of the operation depends on the compatibility of the operator's equipment and the software of your smartphone.
☑️ Checking the auto dial settings
Use of codes and hidden menus
For advanced users who want to get maximum control over the call process, there are special features for the user. USSD-These tools allow accessing modem deep settings that are not output to the normal HyperOS interface, but should be used with caution to avoid disrupting network modules.
One effective way is to use code to activate hidden telephony functions, type in dialer code ##86569726## (corresponding to AUTOREWARD, although it doesn't work on all chipsets). If the code is active, a notification will appear on the screen about the successful activation of the hidden auto dialer.
⚠️ Note: Entering engineering codes on modern versions MIUI It can be blocked by the manufacturer for security reasons. If the code doesn't work, don't try to enter random combinations, it can cause network settings to reset.
Also worth mentioning is the code ##4636##, which opens the test menu. Here, under Telephony Settings, you can find settings that affect your preferred network type and crash behavior. While there may not be a direct auto dial button, resetting the radio module settings can sometimes help to eliminate errors that interfere with normal re-dialing.
| Code/Command | Function | Status of work | Risks. |
|---|---|---|---|
| ##86569726## | Activation of hidden auto dial | It works on old MIUIs. | Low. |
| ##4636## | Phone testing menu | Works for the majority. | Medium (when changing settings) |
| ##726## | GSM Testing (Field Test) | Depends on the operator. | Low. |
| adb shell settings put... | System settings through PC | Requires root/ADB | Tall. |
What do I do if the codes don't work?
Third-party applications for call automation
When Xiaomi's built-in tools are not functional enough, specialized applications from the Google Play store come to the rescue, offering flexible scenarios: you can set the interval of a re-call, the number of attempts, and even the time of day when an auto-dial is allowed, which is the most reliable way to implement a full-fledged cyclic auto-dialer.
Popular applications like Auto Redial, Call Retry, or Automatic Call Redial run on top of standard telephony, intercepting the completion of a call and, if the connection does not occur, automatically initiate a new set after a given period of time, and installing such programs requires permissions to make calls and access to a call log.
When choosing an app, pay attention to reviews and installs. It is important that the program does not contain intrusive advertising that can overlap the interface during an important conversation, and it is also worth checking whether the application is compatible with your version of Android, since new versions of MIUI strictly control background activity.
- 📲 Download the verified auto dialing app from the official store.
- 🔐 Provide the necessary permissions at the first launch (call, contacts).
- ⏱ Set up the repetition interval (e.g., every 10 or 30 seconds).
- 🔇 Make sure that the application does not fall under aggressive energy saving system.
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To keep the auto dialing app running smoothly, go to the battery settings, find the app installed, and select No Limits mode, which will prevent it from being uploaded from memory by the system.
Solving problems with auto dialing on Xiaomi
Even with the right setup, users can encounter situations where the auto dial doesn't work, most often the problem lies in the aggressive optimization of the battery, which is a hallmark of the MIUI shell. The system can "kill" the re-drill process, considering it to be a background task consuming resources.
To solve this problem, you need to manually add the phone's application or system process to exceptions. Go to the battery settings, find the appropriate application and change the mode to "No restrictions." You should also allow auto-start for this application in the appropriate settings section.
Another reason may be the conflict. SIM-If two cards are installed in the device SIM-If you're using a card, the system may not know which call to make, make sure that you have a specific card or "Always Ask" mode for outgoing calls, although the latter is less convenient for auto dialing.
⚠️ Attention: Excessive use of an auto dial (e.g. less than 5 seconds interval) may be considered by the operator as spam or an attack on the network. This may lead to a temporary number lock.
If problems persist, try resetting your network settings. Go to Settings → SIM-maps and mobile networks → Reset the network settings. This action will return all connection parameters to factory values, which often eliminates software glitches that interfere with telephony.
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The main reason for the failure of the auto dial on Xiaomi is the aggressive energy saving MIUI. Be sure to add a phone app or auto dialer to the battery exceptions.