Can You Use a Code to Check if Your Phone is Hacked or Tapped?

I’ve been asked this question repeatedly over the last few years – is there a code to check if phone is hacked or tapped by someone? Wouldn’t it be great if this was true and it really worked?

So I decided to run some tests and see for myself if this could work.

Now I have to be honest here – I had looked into this briefly a while ago with mixed results using a couple of codes. The bigger problem as I see it is not so much the codes working or not – it is the fact that these codes are a very limited way to check if your phone is hacked.

On this website I have a whole section about Online Security covering all aspects of how to tell if your phone is hacked and spy app detection and of course how to remove a hacker from your phone.

With so much experience of these topics I am naturally a skeptic of something as simple as using a code to tell if a phone is hacked. But I put this aside and continued with the test. Later on I will discuss the bigger issue of how effective these codes are.

codes to check if phone is hacked image

Testing The USSD Phone Codes

The codes most sites refer to are USSD Codes – Unstructured Supplementary Service Data codes also referred to as “Quick Codes”. Put simply, these USSD codes allow the phone user to access some hidden features.

They allow you to see certain data and information from your carrier and to access hidden information on your phone itself.

The first thing was to try and find some codes used to check if a phone has been hacked or tapped in some way. The problem is that these aren’t that widely known and they differ from types of phone and individual carriers.

Another problem was using codes that could in some way help to find a hack. Using a code to see your remaining balance doesn’t really help!

Once I had a set of codes to test I tried them on two of my test phones – a Samsung Galaxy A20 and an iPhone 5S. Obviously this is a limited test but I still wanted to see how these codes might perform in the real world.

How to Use the Codes

You simply type these codes into your phone dialler / keypad exactly as shown and hit the call button. The codes usually start and end with a * or a # with numbers in the middle. They are designed so that you are not likely to hit them by mistake.

Test Results

These commonly quoted codes to check if your phone has been hacked or tapped are found easily online – and repeated by multiple websites.

So I tested the following codes and logged my results – if they worked or not.

Code to check for any redirection:

*#62*      Did not work
*#62#     Worked on Android and iPhone

Code to check for any call diversion:

*#21*       Did not work
*#21#      Worked on Android and iPhone

Code to check for call forwarding:

*#67#      Worked on Android and iPhone
*#61#      Worked on Android and iPhone

All three of these codes displayed the same MMI code report stating if any forwarding or diversion is taking place.

ussd code hacking report

Code to automatically undo all redirection codes:

##002#    Worked on Android and iPhone

The Utility Netmonitor Code

These codes are touted as the best codes to use to check if your phone is hacked or tapped in some way without your knowledge. Using these codes is supposed to open up a secondary menu which can identify where your phone signal is being routed.

The idea is that you can use this information to see if your data is being hacked through any suspicious relay tools – not regular relay towers. To me this idea is totally whack for any normal user.

I doubt even an expert could use this information to come to any conclusion of being hacked. It will show no evidence whatsoever of any hacking done using commercial spy apps – the most common way for regular phone users to be hacked these days!

Worst of all – despite several websites repeating these codes – I couldn’t get any of them to work!

The Utility Netmonitor Code for Android:

*#*#4636#*#*                 Not working
*#*#197328640#*#*      Not working

The Utility Netmonitor Code for iPhone:

*3001#12345#*        Not working
*3001#12345#          Not working

I tried several variations of these codes multiple times – I searched for more information online – and still couldn’t get any to work.

I’d be interested to hear from anyone who has managed to get these codes working – or is this just another case of bad or old information being spread online.

Other USSD Codes I found Online

I have listed some of these out of interest but they are not relevant to finding any hacking evidence. They gave mixed results and many are pretty pointless as you can find most of the information in your phone settings and status.

*#06#   Display your IMEI code  – Worked on Android and iPhone
*#0*#    General test mode   – Worked on Android and iPhone
*646#    Check available minutes  – Not working
*225#    Check your Balance  – Not working
#31#       Hide number From Caller ID  – Not working
*43#       Activate Call Waiting  – Worked on Android
#43#      Deactivate Call Waiting  – Worked on Android

*5005*7672#              SMS message center  – Not working
*#*#232337#*#         Display Bluetooth address  – Not working
*#*#34971539#*#*   Display camera information  – Not working
*#*#1472365#*#*      GPS Test  – Not working

*2767*3855#    This code is supposed to completely wipe the phone and reinstall the firmware – given the results from above I DID NOT test this – I don’t suggest you do either!

Conclusion – Can You Use a Code to See If Your Phone is Hacked?

I have already admitted that I started out being pretty skeptical about these codes – but I was shocked at how useless they really were!

Looking at what was actually working – you could check if there are any call redirects, any call forwarding or any call diversions set up on your phone. This amounts to the same report and really doesn’t help much to determine if you have been hacked.

The others I could get to work were totally unrelated to hacking or tapping in any shape or form. I could display the phones IMEI code, activate and deactivate call waiting – all of which are available from the phone settings anyway!

Why are the codes published online so unreliable?

So many didn’t work but that is hardly surprising. People have a tendency to just copy and repeat things published online without checking the facts for themselves.

The other big problem is that there is so much diversity in the smartphone market that set codes will not cover all types and models of phones and then add in the various network providers.

Regardless of the codes not working – my main point is that phone codes cannot help to check if your phone has been hacked, tapped or monitored in some way.

It sounds great at first – simply type in a code and you’ll know if someone is hacking you! But the reality is that there is no easy way to find out – you need to do some research.

Have a good read through the security section of my website and find some real actionable advice.

Thanks for reading.


Author - Susan Kennedy

Hi there - I'm Susan Kennedy, a regular mom who has used spy apps for years now. I was fed up with spammy reviews and poor information so I started this website. I also teach how to improve your online security and stop unwanted spy apps. Reliable information from a real person!

Susan Kennedy author