Where to find call blocking on Android: step-by-step guide

A sudden refusal of a smartphone to make or receive calls is most often caused by an activated function call blocking, which by default can restrict outgoing international or paid numbers. Since the location of this parameter differs radically depending on the device manufacturer and version of Android, users often get lost in the settings menu, not understanding where exactly to look for the desired switch.

In this article we will look in detail at where exactly the call restriction setting is hidden on various smartphone models. You will learn how to check the status of the service with your telecom operator and how to forcibly disable the ban through the engineering menu or standard interface Android. Understanding these mechanisms will help you quickly restore communication and avoid unnecessary charges on your bills.

Please note that some restrictions are set not by the phone itself, but by the mobile operator’s network. Therefore, if you do not find the desired switch in the gadget menu, the problem can only be solved by calling the support service of your communication provider.

Standard path in the “Phone” application

In most modern smartphones running pure Android or shells close to the drain (for example, Moto, Nokia, Pixel, Sony, OnePlus, Realme), blocking settings are integrated directly into the calling application. This is logical, since the function directly controls the operation of the communication module.

To find the desired item, open the standard “Phone” application (handset icon) and click on the three vertical dots in the upper right corner of the screen. In the drop-down menu, select section Settings. Next, look for item Accounts for calls or Advanced settings. This is where the option is hidden Call blocking.

When you first enter this section, the system may ask for a password. By default, this is often the last 4 digits of your number or code 0000, 1234. If you changed the password before and forgot it, you can reset it only by contacting your cellular operator, since this protection is stored on the network side.

After entering the password, you will see a list of call categories that can be limited. Usually, options for blocking all outgoing, international calls or calls in roaming are available. Deactivation This occurs by simply switching the toggle switch to the inactive position next to the desired item.

⚠️ Attention: If you receive an “Invalid password” error when entering your password or “Network error”, do not try to guess the code repeatedly. After 3-5 unsuccessful attempts, the SIM card may be temporarily blocked from executing USSD commands.

Features of the Samsung One UI interface

Smartphone owners Samsung face a slightly different menu structure due to the proprietary shell One UI. Here the setup logic is also tied to the dialer application, but the path to the treasured button is a little longer and has its own nuances depending on the firmware version.

Open the application Phone and tap on the three menu points. Select item Settings. In the list of options, find the section Additional services. In some software versions this item may be called Operator services. The system will spend a few seconds analyzing the available services of your SIM card.

In the window that opens, select the item Call blocking. You will be prompted to select a SIM card if your device has two installed. After this, a list of call types will appear. To disable restrictions, you must switch all active toggle switches to the “Off” state.

Interface Samsung often provides more detailed information about the status of each service. If the switch is inactive (grayed out), this means that the service is blocked at the operator level and cannot be changed through the phone settings.

Setting up blocking on Xiaomi and MIUI

Users of devices Xiaomi, Redmi and Poco with shell MIUI or HyperOS should be aware that in their system, call settings may be divided into different menus depending on the regional firmware version (Global, China, EEA).

The standard algorithm of actions is as follows: go to the “Phone” application, click on the settings gear. Scroll down the list to the Advanced settingssection. Here you will find the item Call blocking. In some cases, this item may be called Call restriction.

It is important to note that in Chinese firmware versions this section may be missing or hidden. In this case, it is recommended to use the universal method via USSD commands, which works on any device regardless of the shell.

If you use a third-party application for calls (for example, from Google), the settings may already be located inside this application, and not in the system “dialer” Xiaomi. Always check which application is installed by default for making calls.

⚠️ Attention: On smartphones Xiaomi with dual-SIM mode, the locking setting is applied separately for each SIM card. Make sure you change the settings for the correct slot.

Universal method via USSD codes

The most reliable way to manage call blocking, which does not depend on the phone model or version Android is to use special USSD commands. These codes send a request directly to the operator’s network, bypassing the smartphone interface settings.

To check the blocking status and disable them, standard codes approved by the GSM consortium are used. You can enter them directly into the dialing field, like a regular phone number, and press the call button.

• 📞 *#33# — Checking the blocking status of outgoing calls (except international calls).
• 🔓 #33# — Disabling blocking of outgoing calls (you will need to enter a password).
• 🌍 *#331# — Checking the blocking of international calls.
• 🚫 #331# — Disabling international call blocking.
• 📶 *#332# — Checking call blocking in roaming.

After entering the disable command, the system will ask for a four-digit password. If you enter it correctly, a message indicating successful activation of the service will appear on the screen. This method is especially useful if the required item is missing from the phone menu or displays an error.

Comparison of the location of settings in different shells

To make it easier for you to navigate the variety of interfaces, we have compiled a summary table. It shows exactly where to look for restriction settings in the most popular smartphone lines.

Manufacturer / Shell	Path to settings	Features
Samsung (One UI)	Phone → Settings → Additional. services	Slow loading list of services
Xiaomi (MIUI/HyperOS)	Phone → Settings → Advanced settings	Depends on the firmware region
Pure Android (Pixel, Moto)	Phone → Settings → Accounts	Standard Google interface
Huawei / Honor (EMUI)	Phone → Settings → Call blocking	Often hidden in a submenu

As can be seen from the table, the logic of the manufacturers is similar, but the names of the items may vary. If you do not find an exact match, look for synonyms: “Restrictions”, “Call barring”, “Operator services”.

Solving problems with a forgotten password

One ​​of the most common problems is a forgotten password for the call blocking function. Since this password is stored on the SIM card or in the subscriber profile with the operator, it is impossible to reset it through the phone settings There is a myth that removing the SIM card and installing it in another phone will help reset the password. This is wrong. The password is tied to the phone number and account on the operator’s network, and not to the physical media or device..

There is a myth that removing the SIM card and putting it in another phone will help reset the password. This is wrong. The password is tied to the phone number and account on the operator’s network, and not to the physical media or device.

The only working way to restore access is to call the support service of your mobile operator. The operator will check your data (passport data of the number owner, security question or recent payments) and either name the current password or set a new one at your request.

What to do if the operator cannot reset the password?

In rare cases, if the number is not registered to you or the data is lost, the operator may refuse to reset. In such a situation, the only thing that will help is to replace the SIM card in a communication shop while saving the number, which will automatically reset the blocking settings on the network side.

After receiving a new password, be sure to write it down. It is recommended to store such codes in a password manager or in a secure paper notepad to avoid similar situations in the future.

⚠️ Attention: Interfaces of mobile applications of telecom operators are constantly updated. If you cannot find the blocking service in your personal account, check the latest information on the official website of the provider.

Frequently asked questions and answers (FAQ)

Why can’t I call even though the blocking is turned off?

There may be several reasons: lack of funds on the balance, problems with network coverage, incorrect APN settings for VoLTE or temporary failure of operator towers. Try rebooting the phone or switching the network mode.

Is it possible to block incoming calls through this menu?

No, the standard “Call Blocking” function in Android is intended primarily for limiting outgoing calls (paid, international). To block incoming calls from specific numbers, use the “Black List” function.

Does blocking calls affect the Internet?

No, these settings only affect voice communications and SMS. mobile data (3G/4G/5G) will work regardless of the blocking status of voice calls.

Are blocking settings reset when flashing the phone?

No. Since the settings are stored on the operator's side or on the SIM card, flashing the device, resetting to factory settings or replacing the phone will not affect the call blocking status.

What is the default password for all operators?

There is no universal password. The most commonly used combinations 0000, 1234 or the last 4 digits of the phone number, but many operators require setting an individual code when you first connect to the service.