How to hide contact in the phone Android Xiaomi: the complete guide

Owning a Xiaomi smartphone means accessing a huge amount of personal data, and privacy is particularly acute. MIUI shell and the newer HyperOS offer advanced tools for protecting information that often remain in the shadow of standard features. Hiding a phone number from prying eyes is not just a matter of convenience, but a necessary security measure in today’s digital world.

There are several levels of privacy that you can implement on a device, so you can completely hide a contact from the general phone book by moving it to a secure area, or you can simply limit the caller's ability by sending it directly to the answering machine, and understanding the difference between these methods will help you choose the most appropriate protection scenario.

In this article, we will discuss all available methods, from built-in system functions to the use of third-party applications.We will look at how the Hidden Box works, how it differs from the usual Black List, and what nuances work with the system has to do with the system. SIM-And if you go deep into the settings, you'll feel confident.

Use of the Hidden Box function in MIUI

The most effective and native way to hide contact is to use the built-in Hidden Box feature, which allows you to move selected numbers to an isolated space that is password-protected or biometrically protected, and the contacts that are there are not displayed in the shared list and are not visible when you normally view your call history.

To activate this function, you need to go to the Phone app and click on three dots in the top corner of the screen. In the drop-down menu, select Settings, then find the Lock section. This is where the Hidden Box switch that you want to activate hides. Once turned on, the system will prompt you to set a password for protection if it is not already set.

⚠️ Attention: Forgotten passwords from Hidden Box are almost impossible to recover without a linked Mi Account.Make sure you remember the login details or set up a reliable but memorable code.

Once set up, the mechanism works like this: to call a hidden contact or see an incoming one, you need to manually activate the display mode. In the Phone application, you need to click three dots and select Show hidden numbers, then enter a password. Without this procedure, calls from such subscribers can be displayed as “Hidden Number” or not at all recorded in the logs, depending on the firmware version.

• 🔒 Complete isolation of contacts from the general list of telephone books.
• 📞 Ability to receive calls, but with mandatory authorization to view.
• 🛡️ Protection with a password, pattern lock or fingerprint.
• 📵 No notifications of missed calls in the notification curtain.

It's important to understand that a Hidden Box is not the same as a lockdown. A subscriber can still reach you if you're online, but you'll only see it when you unlock the hidden partition, and it's the perfect solution for those who want to hide the fact that they're communicating with certain people from those who can pick up your phone.

Setting up the blacklist and filtering calls

If your goal is not so much to hide the contact from yourself or the owner of the phone as to limit his ability to communicate with you, then you should turn to the functions of the Black List. Unlike the Hidden Box, here the contact is not hidden, but blocked. However, in the context of the topic of how to hide, this method is useful in that the caller does not receive a beep, and you do not see a pop-up call window.

The setup is done via the same route: Phone → Settings → Lock → Blacklist. You can add a specific number manually or select it from your call history. Xiaomi’s system allows you to flexibly adjust reactions from full lock to Do Not Disturb when calls pass, but the phone is silent.

Special attention should be paid to smart locking functions. MIUI algorithms can detect spam and telemarketing by automatically blacklisting them, and you can add rules to this list, for example, by blocking all numbers that start with certain numbers, or hiding calls from unknown numbers.

It is worth noting that adding a contact to a blacklist does not hide it from your phone book. If someone takes an unlocked phone and opens contacts, they will see the record. Therefore, for complete confidentiality, it is recommended to combine methods: first hide the contact through the Hidden NT, and then, if necessary, block it.

Application of the Second Space for Total Insulation

For users who want the highest level of privacy, Xiaomi offers a Second Space feature, which is essentially creating a second profile on a single device, with its apps, gallery and, importantly, its phone book. Contacts created in Second Space do not physically exist in the main profile.

Switching between spaces is done through a label on your desktop or through settings, and you can set different passwords or fingerprints to log in to each space, and if you give someone a phone to call with your primary finger, they'll be in a normal space and never know that the other one exists.

This solution is ideal for separating work and personal contacts, so you can install the Phone app in the Second Space and fill it with only trusted numbers, but these numbers will be completely absent in the main profile, and it will be extremely difficult to find them with standard search engines on the file system without root permissions.

⚠️ Note: When you delete the Second Space, all data inside it, including hidden contacts and call history, will be permanently deleted.

Creating Second Space requires a little more system resources, as it actually runs two copies of system services. On older smartphones, this can lead to a slight decrease in performance or a faster battery discharge. However, on modern devices in the Redmi Note or Xiaomi series, this feature works almost imperceptibly to the user.

• 📱 Complete data isolation: two phones in one case.
• 🔐 Different login passwords for different user profiles.
• 📂 Separate gallery, files and browser history.
• ⚙️ Possibility of cloning applications for different accounts.

Hiding contacts through third-party applications

The built-in MIUI is powerful, but sometimes it may be too little or too complicated to use, and third-party apps from Google Play come to the rescue, and there are many privacy-protective tools like Calculator Vault or Hide My Contacts.

The way these applications work is often masked, and the app icon can look like a calculator or a flashlight, but when you type in a special code, you open up a contact store, which adds another layer of security: even if an attacker gets access to the phone, they won't know where to look for hidden information, because the app looks like a system utility.

However, using third-party software carries risks: You need to have confidence in the developer, as the app gets access to your entire phone book. Transferring contact data to third-party servers can nullify all privacy efforts. Always check the permissions the app requests when installing.

In addition, such applications can conflict with the system shell Xiaomi. After Android updates, the hiding functions may stop working correctly, contacts may “get out” or stop showing even for the owner.

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When choosing a third-party app, pay attention to the number of installs and the date of the last update. If the app has not been updated for more than a year, there is a high probability of compatibility problems on new versions of Android.

Work with SIM-mapping

Often, users confuse hiding a contact in a phone book with hiding their number when they call you out, and if your job is to make sure that they don't see your number when you call them, then the phone settings are secondary, which is a carrier service or network setting.

You can use special codes to hide your number at the device level, for example, adding the #31# prefix before the subscriber number will hide your ID when you call. You can also change the settings in the Phone menu → Settings → Accounts (or Additional settings) → Display the number. You can select the "Hide the number" option here.

It's important to distinguish where the contact is stored. SIM-The map, editing and hiding capabilities are limited by the functionality of the map itself. Modern Xiaomi smartphones by default offer to save contacts to Google account or phone memory, which gives more options for management, including adding additional fields, photos and hiding.

If you want to hide a contact that is physically recorded on the SIM-You'll need to copy it or move it to the phone's memory first, and then you'll be able to apply the Hidden Box or other security tools available in the phone to it. MIUI

• 📶 Use the #31# code to hide a number.
• 📲 Setting up "Display Number" in the system menu of calls.
• 💾 Transfer of contacts with SIM-Maps to the cloud or device memory.
• 🌐 Dependence on the service support of the operator.

FAQ: Frequently Asked Questions

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The combination of the Hidden Number Storage Box and the Black List for Call Filtering ensures the highest level of privacy on Xiaomi smartphones.