Managing incoming calls is one of the basic but critical functions of a modern smartphone. Owners of shell-based devices Realmeshell-based Realme UIare often faced with the need to redirect incoming calls to another number. This may be due to the lack of a network in the current location, the desire to maintain the confidentiality of the main number, or simply the need to combine calls from two SIM cards into one.
The process of activating this service does not require the installation of third-party applications, since the functionality is built into the standard phone book menu and is supported at the telecom operator level. However, the settings interface may vary depending on the version Android and modification of the firmware. Understanding the principles of operation of this function will allow you to flexibly manage your availability to subscribers.
In this article we will analyze in detail all the available configuration methods, possible nuances of working with two SIM cards and methods for solving common errors. You'll learn how to use special codes for quick activation and where to look for hidden menus to fine-tune call settings. This guide will help you take full control of your incoming traffic.
Main types of call forwarding
Before moving on to technical actions, you need to understand the types of forwarding that the operator's network offers. GSM standards provide for several scenarios, each of which solves a specific user problem. Understanding these differences will help you avoid unnecessary costs for communication services and calls.
The most common option is unconditional forwarding. In this mode all incoming calls they are instantly redirected to the specified number, even if your phone is turned on, is in the network area and is not busy with a conversation. The subscriber trying to reach you will hear beeps or will immediately be connected to another device, depending on the operator’s settings.
There are also conditional types of redirection that are activated only under certain circumstances. For example, call forwarding when the line is busy will save you from missing important calls during a call. If the phone is turned off or is out of coverage area, the redirection mechanism will work if unavailable, which is the standard for most users who often visit places with poor signal.
- 📞 Unconditional: Calls are always transferred, regardless of the phone status.
- ⏳ When busy: active only during your conversation with another by the subscriber.
- 🚫 When unavailable: triggered when the phone is turned off or there is no network.
- ⏱ When unavailable answer: turns on if you have not picked up the phone within the set time.
⚠️ Attention: Call forwarding to numbers of other operators or in roaming may be charged as an outgoing call. Check the terms of your tariff plan with your mobile operator before activating the function.
It is important to note that the settings for each SIM card in dual-SIM smartphones Realme are applied independently. You can set up call forwarding from only one card, leaving the second one in standard operation mode. This gives flexibility in managing personal and work contacts.
Activation through the standard Realme UI settings menu
The most secure and understandable way to control the function is to use the graphical interface of the operating system. In smartphones Realme the settings may differ slightly depending on the version Realme UI (2.0, 3.0, 4.0 or later), but the general logic remains the same. You do not need special knowledge or root access.
To begin, open the standard application Phone or Calls, which usually has a green icon with a handset. In the upper right corner of the screen there is a menu indicated by three dots or a vertical ellipsis. By clicking on this element, you will open a drop-down list where you need to select the item Settings.
In the menu that opens, find the section Accounts or Additional settings. Your SIM cards are displayed here. If your device has two cards installed, the system will prompt you to select which SIM card you want to change the settings for. After selecting the desired slot (SIM 1 or SIM 2), a list of available options will open in front of you.
☑️ Check before setting
Next you should click on the item Call forwarding. The system may ask for permission to access the phone book or make a call - this is normal behavior as the phone accesses network commands. After a short loading time (usually a few seconds), a list of the four main types of forwarding discussed earlier will appear on the screen.
Select the type you need, for example, Always forward. Enter the phone number to which calls will be received, or select a contact from your address book. After entering the number, press the Enablebutton. The system will send a request to the operator’s network, and in a moment you will receive confirmation of successful activation of the service.
Using USSD codes for quick setup
For experienced users or in situations where the phone menu does not work correctly, there are universal USSD codes. These commands are sent directly to the operator's network and work on any phone, including older models and push-button devices. In smartphones Realme they can be entered directly through the dial pad.
The codes have a standardized format using the asterisk and hash symbols. For example, to activate unconditional forwarding, use a command like **21*number#. To disable the function, use the code ##21#. These commands are universal for most GSM networks, but may have nuances depending on the region.
Activation: **21*79001234567#
Disconnection: ##21#
Checking status: *#21#
After dialing the code and pressing the call button, a system notification from the operator about the status of the service will appear on the screen. This happens almost instantly. If you entered an incorrect number format or the service is unavailable, you will receive a corresponding error text message.
List of basic forwarding codes
**21*number# - Enable unconditional forwarding
**67*number# - Enable call forwarding
**62*number# - Enable forwarding when unavailable
**61*number# - Enable forwarding when there is no answer
##002# - Disable all types of forwarding at once
Using codes is especially convenient when you need to quickly reconfigure calls without diving deeply into the settings menu. However, be careful when entering numbers: an error in one digit of the number will result in calls being sent to a stranger. Always double-check the entered combination before pressing the call button.
Setting up redirection for two SIM cards
Smartphones Realme are predominantly dual-SIM devices, which creates additional logic in the settings. The user must be clearly aware that the parameters for SIM 1 and SIM 2 are stored separately and do not depend on each other. Changing the settings for one card will not affect the operation of the second in any way.
When entering the call settings menu, the system will immediately prompt you to select a slot. This is a critical point. If you have set up forwarding for the first SIM card, but calls are not coming, check whether you forgot to set up the second one, or vice versa - whether you mixed up the slots when entering the target number.
There is a scenario when calls from one SIM card are redirected to the second SIM card of the same phone. This is possible, but requires caution. If both SIM cards are in the same device, this setting can lead to conflicts or cyclic redirection, as a result of which you simply will not hear the call.
| Parameter | SIM 1 (Main) | SIM 2 (Additional) |
|---|---|---|
| Forwarding status | Active | Disabled |
| Condition type | If unavailable | — |
| Target number | +7900XXXXXXX | — |
| Indicator in the status bar | Yes (handset with arrow) | No |
To effectively manage two numbers, it is recommended to give SIM cards clear names in the settings, for example, “Work” and “Personal”. This will help you visually navigate the forwarding menu and not get confused about which number you are currently setting up.
Checking the status and disabling the service
After configuration, it is important to make sure that the function works correctly. In the forwarding settings menu, next to each type of service, the current status (Enabled/Disabled) and the number to which the forwarding is being carried out are usually displayed. If the wrong number is indicated there, you can change it by simply entering a new one.
For quick verification, you can use the USSD code *#21#. It will display a summary of where your calls are being forwarded and under what conditions. This is the most reliable way to get up-to-date information directly from the operator’s network, bypassing possible bugs in the phone interface.
To disable forwarding, just return to the same settings menu and press the button Turn off opposite the active item. Or, as mentioned earlier, use a universal cancellation code ##002#, which resets all types of redirects at once. After disconnecting, the indicator in the status bar (if there was one) should disappear.
If disabling through the menu does not help and the status remains active, try rebooting the device. Sometimes the network settings cache can store outdated data. The reboot will update the network registration and apply the changes.
Typical errors and solutions
Despite the simplicity of the procedure, users Realme may encounter a number of problems. One of the common errors is the message "Connection failed" or "Network error" when you try to enable the feature. Most often this is due to temporary problems on the operator’s side or the lack of a voice channel.
Another common problem is that forwarding is not enabled on one of the SIM cards. Make sure that the selected SIM card has voice calling enabled. In some configurations, when one SIM card is used only for the Internet (4G/5G data only mode), control of voice functions through the menu may be limited.
⚠️ Attention: Mobile operator interfaces and Realme UI versions are constantly updated. The location of menu items may differ slightly from that described. If you do not find the item you need, use the search in your phone settings.
It is also worth considering that some corporate tariffs or virtual operators may block the ability to independently set up call forwarding via your phone. In this case, the only solution is to contact the support service of your telecom operator or use your personal account on the website.
Tip: If forwarding stops working after changing the SIM card or operator, be sure to reset the old settings with the code ##002# before trying to reactivate the service.
Frequently asked questions (FAQ)
Will you be charged for forwarded calls?
Yes, in most cases, forwarding is charged by the operator as an outgoing call from your number to the number where the forwarding is going. If the target number is roaming or long-distance, the cost can be significant. Free forwarding is available only within special service packages.
Is it possible to set up forwarding if the phone is turned off?
No, to change forwarding settings, the phone must be turned on and registered in the operator's network. However, if you set up forwarding in advance (for example, “if unavailable”), then after turning off the phone, calls will be sent to the specified number.
Why is the forwarding button in the menu gray and not pressed?
This may mean that the SIM card does not support this function at the level of phone settings, or there is no network at the moment. Also try removing and reinserting the SIM card, or check if outgoing calls are blocked.
Are forwarding settings reset when you reset the phone?
Forwarding settings are stored on the operator's side, and not in the phone's memory. Therefore, a full reset (Hard Reset) or flashing the smartphone Realme will not delete the activated forwarding. You need to disable it separately through the menu or codes.
How do I know if I have call forwarding now?
The fastest way is to dial the USSD code *#21# and press the call button. An information message from the operator will appear on the screen with the status of all types of call forwarding for your SIM card.
Setting up call forwarding on Realme takes less than a minute, but requires care when entering the number and understanding the tariffs of your operator.