What happens if you dial *#21#? Dialing *#21# on your phone allows you to check the status of call forwarding settings. It reveals whether your incoming calls are being redirected to another number. This feature is useful if you’re concerned about call privacy or suspect unauthorized forwarding.
What Does Dialing *#21# Do on Your Phone?
Dialing *#21# is a common way to access call forwarding settings on many mobile devices. This code helps you determine if your calls are being forwarded and, if so, to which number. It’s a quick diagnostic tool that doesn’t change any settings but provides valuable information about your phone’s configuration.
How Does Call Forwarding Work?
Call forwarding is a feature that allows you to redirect incoming calls to another number. This can be useful if you’re unable to answer calls on your primary phone. There are different types of call forwarding:
- Unconditional Forwarding: Redirects all incoming calls to another number.
- Conditional Forwarding: Redirects calls based on specific conditions, like when your phone is busy or unreachable.
Why Check Call Forwarding Status?
Understanding your call forwarding status is essential for maintaining control over your phone calls. Here are a few reasons why you might want to check this setting:
- Privacy Concerns: Ensure that your calls aren’t being forwarded without your consent.
- Troubleshooting: Identify issues with receiving calls.
- Cost Management: Avoid unexpected charges by knowing if calls are being redirected to a number with different rates.
How to Use *#21# on Different Devices
Using *#21# on Android
On Android devices, dialing *#21# will display a message showing the call forwarding status for various scenarios, such as voice, data, and fax calls. This information helps you understand if and where your calls are being redirected.
Using *#21# on iPhone
For iPhone users, dialing *#21# provides similar information. You’ll receive a list detailing the call forwarding status for voice, data, and other services. This feature is part of the phone’s standard settings and doesn’t require additional apps.
Practical Example: Checking Call Forwarding
Imagine you’re expecting an important call but suspect that your phone might be forwarding calls to another number. By dialing *#21#, you can quickly verify if call forwarding is active and take necessary action if needed.
Common Questions About *#21#
What Does *#21# Reveal?
Dialing *#21# reveals whether your phone’s call forwarding is active and, if so, the number to which calls are forwarded. This information is crucial for ensuring that you receive all your calls as intended.
Can *#21# Change Any Settings?
No, *#21# is a non-intrusive code that only displays information. It doesn’t change or deactivate any settings. To modify call forwarding, you’ll need to access your phone’s settings or contact your service provider.
Is *#21# the Same for All Carriers?
While *#21# is widely used, some carriers might use different codes for checking call forwarding. Always verify with your service provider if you’re unsure.
How Do I Disable Call Forwarding?
To disable call forwarding, you typically need to enter a different code, such as ##21# or access your phone’s settings. The exact method can vary depending on your carrier and device.
Are There Other Useful Codes Like *#21#?
Yes, there are several other USSD codes that provide useful information about your phone’s settings. For example, *#06# displays your device’s IMEI number, and *#62# checks call forwarding when your phone is unreachable.
Conclusion
Dialing *#21# is a simple yet effective way to check your phone’s call forwarding status. Whether you’re concerned about privacy, troubleshooting call issues, or managing costs, understanding this feature can help you maintain control over your communications. If you need further assistance, consider exploring your phone’s settings or contacting your service provider for more detailed support.
For more information on related topics, you might find these articles helpful:
- How to Manage Call Forwarding on Android
- Understanding iPhone Call Settings
- Troubleshooting Common Phone Issues
By staying informed about your phone’s capabilities, you can ensure a smoother and more secure communication experience.





