
In an increasingly connected world, privacy is a growing concern for many. Fortunately, there are several methods to make your phone number private on Android devices. This can be done by modifying your phone settings, using a prefix code, or contacting your mobile carrier. In Australia, the code #31# can be dialled before a number to make it appear as private. This works for both mobile and landline numbers. Alternatively, you can download third-party applications that provide additional privacy features, such as creating temporary numbers. These methods ensure that your calls remain anonymous and your personal information protected.
| Characteristics | Values |
|---|---|
| Blocking code for Australia | #31# |
| Blocking code for North America | *67 |
| Blocking code for Europe | *31# |
| Hiding your number on a call-by-call basis | Dial #31# before the number |
| Hiding your number permanently | Contact your mobile carrier or change your settings |
| Hiding your number on a landline | Dial 1831, followed by the number |
| Hiding your number on an iPhone | Go to Settings > Phone > Show My Caller ID (and turn it off) |
| Hiding your number on an Android | Go to Phone > Settings > Call Settings > More Settings > Caller ID > Hide Number |
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What You'll Learn

Using the #31# prefix code
In Australia, you can use the #31# prefix code to make your number appear as private on a call-by-call basis. This method works for both mobile and landline numbers.
To use the #31# prefix code, simply dial #31# followed by the number you wish to call. For example, if you want to call 123-456-7890, you would dial #31#1234567890. This will block your caller ID for that specific call, and your number will appear as private to the person you are calling.
It is important to note that this method may not work for all carriers, as some may not have interconnect agreements with each other. Additionally, while this method will make your number appear as private, it may result in a lower chance of people answering your calls as many tend to avoid private numbers due to spam.
By using the #31# prefix code, you can make your number private on a per-call basis without having to change your overall phone settings or contact your mobile carrier. This provides you with flexibility and control over your privacy when making calls.
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Changing your phone settings
If you want to keep your phone number private on your Android device, there are several methods you can use. Firstly, you can modify your phone settings to hide your caller ID. To do this, open the Phone app and tap on the three-dot menu in the top-right corner. From the dropdown menu, select "Settings". Then, look for "Calls", "Call Settings", or "Caller ID & Spam" and tap on it. From there, you can select “Hide Number” or toggle on "Caller ID & Spam" to keep your number private. This method will hide your number for all outgoing calls.
Alternatively, you can choose to hide your number on a call-by-call basis without changing your overall settings. To do this, simply dial #31# before the number you wish to call. For example, if the number is 123-456-7890, you would dial #31#1234567890. This method works for both mobile and landline numbers in Australia.
If you prefer a more permanent solution, you can contact your mobile carrier to set your number as private for all outgoing calls. Get in touch with your carrier's customer service, usually found on their website or your bill, and request that they enable a permanent caller ID block on your account. They may ask for verification details to confirm your identity. Once the changes are made, your number will be hidden from all outgoing calls.
In addition to these methods, there are also third-party apps available that can help manage your caller ID settings and provide additional privacy features. These apps allow you to create temporary or disposable numbers, often referred to as "burner" numbers, which can be used to make and receive calls without revealing your actual phone number. Some popular options include Burner, Buzzy App, and Sonetel, which offers Australian numbers.
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Contacting your mobile carrier
If you want to make your phone number private on your Android device, you can contact your mobile carrier. Most carriers can set your number to be private for all outgoing calls.
To get started, dial your carrier's customer service number, which is usually found on their website or your bill. When you speak to a representative, ask them to enable a permanent caller ID block on your account. They may ask for verification details to confirm your identity. Once the changes are made, your number will be hidden for all outgoing calls.
If you prefer to hide your number on a call-by-call basis, you can use a prefix code. This method allows you to keep your number private for specific calls without changing the overall settings. Open the Phone app on your Android device. Before dialling the number, enter the prefix code. The common prefix code for hiding your number in Australia is #31#. For example, if you want to call 123-456-7890, you will dial #31#1234567890.
If you're unsure about how to block your Caller ID on Android through settings, your carrier may be able to help. They may offer an app to set this up, or you can contact them directly for assistance.
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Using a disposable or burner phone
A burner phone is a prepaid, often disposable phone that offers a quick, private way to communicate without long-term contracts. Burner phones are legal in most countries worldwide, including Australia.
In Australia, you can use the Burner app, which allows users to create disposable U.S. phone numbers for calls, SMS, and MMS communication. The app is free, but users need to purchase credit packs if they want more than one number or to make and receive more calls. You can also use a Chrome extension for Burner to add burner numbers to online forms.
Another similar app is Hushed, which provides service in over 40 countries. Hushed uses VoIP, so calls are made over Wi-Fi or cellular data.
If you prefer a physical phone, burner phones can be bought from retail or convenience stores, big retailers, or online. These phones are usually ultracheap handsets that you buy with cash for privacy, activate, use, and then discard.
To use a burner phone safely, you can add more minutes and data by buying prepaid cards in stores or online. For extra privacy, download secure messaging apps like Signal or Telegram and use a VPN app. Be careful when browsing websites or connecting to Wi-Fi, as these actions can reveal your location. When you’re done with the burner phone, do a factory reset to erase all data and clear the SD card.
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Using a third-party application
If your Android phone doesn't have a built-in system to hide your phone number, you can use third-party applications to make your number private. These applications make phone calls using Voice-Over-IP (VoIP). Burner applications, for example, are available on the internet for Android and can be downloaded and used.
If you want to block your number for more than one call, you will need to enter a code before every call you make. In Australia, the code to hide your number is *67. For example, if the number you are calling is 555-555-5555, you would dial *6755555555.
You can also use a different phone number, specifically one that isn't tied to your identity. These are often called disposable or burner phones/numbers. A prepaid phone is one example. Another option is to use an app that gives you a second phone number. This option is useful if you need to hide your number quickly and for free.
It is important to note that some calls cannot be made with your number hidden. Toll-free and emergency services will always be able to see your number, no matter what you do. Additionally, some third-party apps can allow someone to get around any number of obfuscations you put in place, so none of these methods are guaranteed.
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Frequently asked questions
You can contact your mobile carrier to set your number to be private for all outgoing calls. Dial your carrier’s customer service number and ask the representative to enable a permanent caller ID block on your account.
You can use a prefix code on a call-by-call basis. Dial #31# before the number you wish to call.
Open the Phone app and tap the three-dot menu. Select Settings, then Calls or Call Settings, then Additional or More Settings, and finally Caller ID. Select Hide Number from the Caller ID options.













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