Owners of Xiaomi Mi A3 smartphones often face the need to reach a subscriber who is constantly busy or not responding. The standard interface of the Android operating system installed on this model does not always have an explicit button to enable re-dialing in the call menu. This creates certain inconveniences, especially when you urgently need to contact the operator’s support or an important contact engaged in a long conversation. However, the technical possibility of implementing automatic re-dial on the device is present, although hidden from the eyes of the average user.
There are several proven ways to activate this feature on the Mi A3. You can use hidden engineering codes that change the behavior of the Phone system application, or resort to installing specialized utilities from the Google Play Store. Each method has its own features, benefits and potential risks that you need to know about before you start manipulating. In this article, we will discuss all the available options in detail so that you can choose the most suitable for your situation.
It is worth noting that the call functionality on Xiaomi Mi A3 is based on a clean version of Android (Android One program), which distinguishes it from the MIUI shell, which is familiar to many users of the brand. Therefore, the paths to settings and hidden commands here can be different from those used in other Xiaomi models. Proper configuration of communication parameters will save you time and nerves, eliminating the need to manually press the call button dozens of times in a row.
Built-in Android features on Mi A3
Operating system installed on Xiaomi Mi A3, It's basically stock Android, which means that it's missing many of the proprietary add-ons that are characteristic of the shell. MIUI, including some call features: Standard Google Phone app or system call AOSP (Android Open Source Project doesn’t always have an auto-call option built in in the open settings menu, and users often search for this feature in the “Advanced” or “Call Settings” section, but it simply doesn’t exist there.
However, the system kernel supports a re-set command that is activated through special USSD-Activation of the hidden auto dial function via ##4636## may not be available on some Android 10 and 11 firmware versions due to Google security concerns. If standard methods don't work, it doesn't mean that the phone is broken, it just indicates the limitations imposed by the software developer. It's important to understand the difference between the last number repeater function and the full number auto call function, which requires periodic checks of the line status.
For those who prefer not to install unnecessary programs, there is an option to use access codes to the extended menu. Entering certain combinations of numbers in the dialing field can open access to hidden settings of the radio interface. However, on the Mi A3 with updated security patches, these codes are often blocked, in which case the only legitimate way is to use the capabilities of the phonebook application itself or third-party solutions.
Activation through engineering menu and codes
One of the most popular ways to enable automatic replay is to use engineering codes. On many Android devices, the combination ##4636## opens up a testing menu where you can find parameters that affect network behavior. However, on the Xiaomi Mi A3, this path may be closed. If nothing happens when you enter the code, then your firmware version does not support this access method. In this case, you should not try to "sweep" the menu through ADB without proper knowledge, as this can lead to unstable communication module.
There is also code to activate the Always forward mode or change behavior when busy, but it requires support from the carrier. Standard Android uses the ##002# command to reset all redirects, which sometimes helps to refresh network settings before trying to set up an auto dial. If you decide to experiment with the codes, write down the original parameters so that you can get it back.
Indiscriminately changing the settings in the Phone Information section can result in a loss of signal or inability to make outgoing calls. If you accidentally change the setting and the phone stops catching the network, try resetting the network settings or restarting the device. For most users, it is safer to rely on software solutions that do not require deep intervention.
☑️ Check before changing network settings
Use of third-party applications for auto dialing
Since it is difficult to implement a full-fledged auto dialer with the built-in Xiaomi Mi A3, the most effective solution is to install specialized applications. The Google Play store offers many utilities such as Auto Redial, Call Again or Automatic Retry. These programs work on the principle of a press emulator: they track the completion of the call and, if the connection does not occur, automatically initiate a new set at a given interval of time.
When you install an app like this, you'll need to give it permission to make calls and access to a call log. This is necessary for the function to work properly. Modern versions of Android, including the one on the Mi A3, strictly control these permissions. Once installed, be sure to check the application settings and check if the tick is right next to "Allow Background Activity", otherwise the system may "sede" the program, and the auto dial will not work at the right time.
The advantage of third-party solutions is the flexibility of settings: you can set the number of repeated attempts, the interval between calls (for example, every 10 seconds or 1 minute), and also choose whether to respond to beeps or only to the signal “busy.” Some applications even know how to analyze voice messages of the answering machine and stop trying if the subscriber picked up the phone but said nothing. This makes them more powerful than standard phone functions.
Setting up the Google Phone application
The Xiaomi Mi A3 uses the Google Phone app by default, which is updated periodically through the Play Market store. Recent versions of this app have a useful feature called Re-Call, which makes life easier, although it is not a full-fledged auto dial. When you complete a call, a countdown timer drop appears at the bottom of the screen, suggesting that you call back the selected number. This does not fully automate the process, but eliminates the need to look for contact in the list.
To activate the maximum functionality of the call, go to the app settings (three dots in the corner -> Settings). Here you can find options related to fast dialing and number determination. Although there is no direct button "Enable Auto dial" here, regular updates to the application through Play Market → Profile → Application Management ensures that you get new features that Google introduces gradually. Sometimes functions appear in waves depending on the region and device model.
You can also look at integration with Google Assistant, and you can set up a script where the phone will perform certain actions on a voice command, but native support for auto dialing through Assistant is limited at this point. However, using quick dial widgets on the desktop can speed up the process of manually repeating a call if automatic methods are not available.
Table of comparison of activation methods
To make it easier to choose the best way to set up re-typing on the Xiaomi Mi A3, we have prepared a comparison table that will help you assess the risks and effectiveness of each method. Remember that using third-party software always carries minimal security risks, so choose only proven applications with high ratings.
| Method | Difficulty | Efficiency | Risks. |
|---|---|---|---|
| Engineering codes | Tall. | Low (often blocked) | Medium (failure of network settings) |
| Third-party annexes | Low. | Tall. | Low (access to contacts) |
| Google Phone (widget) | Low. | Medium (semi-automatic) | Absent. |
| ADB team | Very high. | Tall. | High (code errors) |
As you can see from the table, the most reliable and safe way for the average Mi A3 user is to use specialized applications that do not require deep knowledge of Android and work consistently on most versions of the system. Methods with engineering codes should be considered only as experimental, if you are confident in your actions and understand how to return the settings of the phone to the original state.
Possible problems and solutions
You may encounter a number of difficulties when setting up an auto dial on the Xiaomi Mi A3, and users often complain that the auto dial app is crashing or not triggering a call, due to the aggressive battery saving policy in Android, which sees the app actively using the modem and screen (or vibrating) and forcibly shutting down its process. To avoid this, you need to add the program to exceptions.
Another common problem is that mobile operators block auto dialing, where some mobile operators view frequent automated calls from a single number as spam or an attack on the network, and may temporarily block outbound calls.
⚠️ Attention: Excessive use of auto dial-up with small intervals (less than) 5-10 seconds) may result in a lock SIM-card operator for violation of the rules of network use.
There may also be conflicts with other applications that have access to the microphone or telephony. If the auto dial stopped working after installing new software, check the permissions in the system settings. Sometimes it helps to clean the cache of the Phone application through the Settings menu → Apps → Phone → Memory → Clear the cache. Don't confuse cleaning the cache with a data reset, because in the second case you may lose your call history.