For any reason whatsoever without your knowledge, your spouse, partner, friend, workmate, or neighbor can have a second phone number. Do you suspect any foul play in your relationship with such people and you want to know if they have a second number? Probably they have been keeping it a secret they don’t want you to know. Do you need to learn how to know if someone has a second phone number? Then check out this guide for information on how to uncover the second number.

How to know if someone has a second phone number

how to know if someone has a second phone number

Uncovering a second phone number could be a difficult task especially if the number is a virtual number. However, if you have the right tools, willpower, and courage to do it, you can discover such a number within the shortest duration. Here is a list of some of the things you can do to uncover and learn how to know if someone has a virtual phone number.

Ask questions

This is the simplest of all the methods and it takes courage to do it. You can simply ask the person through a phone call, email, or text message if such a person has a second number you can contact them with. Nevertheless, in a situation where you ask a suspected cheating spouse or partner such a question, it is unlikely that you receive a positive response. You can ask their close friends, co-workers, or other family members if they have another phone number you can contact the person with. You can still try this method and see if it works. Most people will tell you if they have a second phone number when they don’t have anything to hide.

Check the phone

A person doesn’t need to buy another SIM card before he owns a second phone number. There are apps such as Hushed, Google Voice, Second Phone Number™, and many more that you can use to own a virtual second phone number app. However, you need to have access to the person’s phone before you can use this method to detect a hidden second phone number. If there are two SIM cards on the phone, you will likely see the network carrier on the homepage. Also, you can pick up the person’s phone and dial your number. If the person has a second phone number, it is likely the phone will ask for permission to use any of the numbers. To detect if the person is using a virtual phone number from the app, all you need to do is to go to Settings, click on apps, then take a look at all the apps on the phone.

Check for bills

You will likely know if a person has a second phone number with the monthly bills. If you have access to the bills, you can check for a potential increase in phone bills or unusual subscriptions for virtual phone lines. If you don’t, maybe it is time for you to pay attention to the papers on the floor in the person’s house and the thrash. Who knows? That might be where you will get the answer to your question. 

Observe the person

If your spouse, partner, or colleague truly has a secret phone number, such a person might not be comfortable using the phone where you are. You have to think of the possible places where the phone might be used.  Once you have a list of possible locations, you can then install visual or audio recording systems in such places. You should, however, be careful if you will be doing this because of basic privacy laws. Moreover, you might not be able to install recording devices in a place that is not yours. You can install such systems in your shared homes and vehicles. You can also install recording apps on your phone. 

Use social media search

Creating a profile on Facebook, Instagram, and some dating sites requires the input of a phone number and email address. If you suspect that someone has a hidden phone number, you can search for his or her name on social media. If there are phone numbers that are associated with the name, you will likely see them. Though a second phone number can be used for many purposes, you can, however, narrow down your search to dating sites, if you suspect that the person is cheating.

Signs your spouse have a second phone number

If you can’t try any of the methods highlighted above, there are still signs for you to know if someone, especially your spouse, has a second phone number. The following are the signs you should look out for.

Another mobile charger

If there are other mobile chargers you do not recognize at home, such a charger might be for the phone where he uses the second SIM card. You can hide the charger and see if he or she will ask for it. It is likely possible that he or she will ask for the charger when they need it. You can then ask a question about the second phone number.

Unusual text notification

how to know if someone has a second phone number

If you notice some strange text notification on your spouse’s phone, it could be from the app he uses for the virtual second phone number. You should observe the message and check if it is from one of the virtual phone number apps.

Hidden phone

When your spouse suddenly begins to hide his or her phone from you, it might be because the person does not want you to see what he or she is doing with the phone or the second phone number.

Addicted to phone

Being addicted to a phone does not necessarily mean that the person has a second phone number. However, in a situation where the person does not leave his phone for you to touch it, it might be because such a person is hiding something on the phone.


By following the tricks highlighted in this article, you can learn how to know if someone has a second phone number or not. However, apart from asking directly from the person and close associates, you should double-check your findings to be 100% sure that the person owns the second number.

I hope this article has helped you learn how to know if someone has a second phone number. Let us know what you think by leaving a comment below.