How to Change Your Number When You Call Someone

Calling someone with a different number, other than with your personal number, can be necessary at times. Although hiding your Called ID information is a facility that certain people like to use, but many network service provides increasingly barring it. However, changing your number when you make a certain call will allow you to work around the Caller ID service.

change your number when you call someone

People may want to change their caller ID numbers for several different reasons. First, they may want to make a prank call to their friends. Second, they may want to protect their privacy and phone numbers from getting captured and given to other parties.

They may want to investigate certain numbers that they are curious about. They may choose to confirm spam calls and conduct some secret investigation.

Some people can use fake numbers to scam people. In case, you ever receive any phone call that asks you to provide your personal and bank information, then it is likely to be a scam and you should immediately hang up the call. Some mobile phone carriers have started sending warning messages and calls to their customers to warn them of this specific issue.

These days people tend to ignore calls from unfamiliar numbers and send them over to voicemail. But it is important to be able to practice safety with regards to your own personal identification mechanisms.

Although it is difficult to change your phone number on various services, but you can still protect your own identity by changing your number when making certain calls. This way if the receiver wishes to call you back, then they can be easily stopped.

In this guide, you’ll learn how to change your number when you call someone for free.

Is it legal to Change Your Number When Calling Someone

Yes, because there is nothing wrong or illegal in changing your number and replacing it with another number when you make certain calls. Most often, it will be your intentions that will determine the true legality of what your actions are.

In case you want to hide your number from contacts in order to safeguard and protect your own personal information, then it is completely legal. If you change your number to investigate a risky phone call, then it is legal. If you use your secondary phone number for certain contacts, then it is also legal.

But if you want to change your number to harass, threaten and abuse someone, then it will be considered illegal.

When you have legitimate and non-criminal motives, then you would not get in any kind of trouble. So you can change your number to make certain calls.

How to Change Your Number When You Call Someone

1. Third Party Application

There are several third-party applications that will let you change your number when you are making a call. These apps have both paid and non-paid versions. You can register yourself on such websites and generate alternate phone numbers when you make certain calls. There are free applications that provide you a chance to change your number for making calls to a limited set of phone numbers.

change your number when you call someone

The procedure requires you to register yourself on the website, then enter the phone number that you wish to call along with the number that you would want to be shown on the caller ID. The call will be made either through your landline or your mobile phone, it can also be made through your web browser. You may use different numbers to make the calls.

2. Google Voice

Google Voice is most obviously the first choice for people who want to change their numbers for specific calls. Google Voice offers a web-based phone number without charging you anything. Google also offers you this service for both mobile and desktop platforms and regularly updates its services.

change your number when you call someone

Google Voice will let you use a secondary number that can forward your calls to your main number. You can also customize your Google Voice number to match your area code.

3. Disposable SIMs

In case you need to make a call only once to certain numbers or call them for a specific period of time, then you may consider using disposable SIMs. The disposable numbers are a great option for people who only wish to change their phone numbers for some particular purpose.

You may choose to call up a business venture or any individual, and then after having the conversation, hang up and be done with it. You will then toss your SIM away which would leave the other person with no way to reach you ever again.


It is completely possible to change your phone number when you wish to make certain calls. It is also legal to do so. However, the legality of your intention would be crucial here. For harmless pranks or investigative purposes, it would be no problem.

In case, you want to check if someone is calling you from a fake number then you can check the area code of the phone number and then look it up. If the number is not real then it will not reveal any relevant information.

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Posted by
Dharmesh Donda

iStaunch is written by Dharmesh Donda, an avid Internet geek, IT professional since 2012. Have been in IT industry for more than a decade, and currently doing management and consulting work have taken a plunge into entrepreneurship.