How To Spy On Phone Calls And SMS Messages

How To Spy On Phone Calls And Text Messages

Whether you're a concerned parent trying to keep your kids safe, or an employer worried about sensitive company information being leaked, spying on phone calls and text messages can give you the answers you need. While it may seem like something only available to secret agents and private investigators, there are actually several ways to spy on calls and text messages without having access to the target device.

Whether you're ready to get started or just want to learn more about this technology, this article will tell you everything you need to know to spy on phone calls and text messages.

Best Apps To Spy On Phone Calls And Texts

There are several apps that claim to be able to spy on phone calls and text messages, but not all of them live up to their promises. To save you the trouble of sifting through dozens of options, we've compiled a list of the best apps that are capable of spying on phone calls and text messages.

1. uMobix

uMobix logo

uMobix is the most powerful and widely compatible spy app that is capable of spying on someone's phone calls and text messages.

I've used most of the apps on the market and uMobix has more features than any other spy app currently available, while also being more user-friendly without sacrificing features and spying capabilities. This results in the user being much less likely to get stuck or not know how to get it working properly.

It provides complete call logs, can block incoming and outgoing calls to specific numbers, and intercepts texts.

Because of the way the software works, you are able to spy on calls and text messages even if the user immediately deletes the entry and unsent messages are also viewable.

uMobix provides a wide range of additional capabilities with access to more social media than any other spy app on the market, including Facebook, Snapchat, WhatsApp, TikTok, Telegram, Reddit, Tinder, Instagram, Skype, and Zoom.

Tech support is available 24/7, which can be a lifesaver if you need to complete the installation in a limited amount of time.

The only complaint I have is that intercepted data is only available for 30 days. But, data retention is longer on multi-month plans so I am only taking away a half star for it.

Recommended Spy App
Ease of Use:
  • Remote camera activation
  • Can stream live video
  • Remote microphone activation
  • Real-time GPS tracking
  • Access to all social media
  • Simple installation
  • Great customer support
  • Data retention limited to 30 days on the basic plan


eyeZy logo

eyeZy is the newest app from a company with a long and trusted history in the parental control niche. As such, it's truly cutting edge when it comes to usability, features, and compatibility.

While it does not require rooting or jailbreaking the smartphone, doing so will enable more features including:

  • Call logs
  • Contact list
  • Text message interception
  • GPS location tracking
  • Keylogger
  • Browser history
  • Monitoring of all social media apps
  • Access to pictures and videos

eyeZy is compatible with a wider range of smartphone models than any other spy app, with full compatibility with every iPhone, iPad, and Android device I checked going back to 2014.

Despite being highly capable and easy to use, it does lack some key features that are found in uMobix including camera activation. If you do not need these more advanced spying features, eyeZy is a great option.

Ease of Use:
  • Easiest to use
  • Totally hidden
  • Fast installation
  • GPS tracking
  • Access to all social media
  • Not quite as powerful as mSpy

3. FlexiSpy

FlexiSpy logo

FlexiSpy is the only app on this list that is capable of intercepting and recording conversations. So why is it way down at #3 when that is what we want to do? Where the two apps above excel in ease of use, FlexiSpy feels outdated and clunky.

This places it in an odd position because it has this one unique ability but feels like it's tailored to more technical users.

To compound issues, it requires that you root or jailbreak the target cell phone. Most users are intimidated by that, even if they are using an app with a streamlined installation process and good tutorials.

If you can get over these issues, FlexiSpy works well and is a fantastic solution for spying on conversations and messages. Just check out the demo first so you feel sure it will be comfortable for you.

Ease of Use:
  • Extremely powerful
  • Live camera streaming
  • Pre-loaded phones available
  • GPS tracking
  • Microphone activation
  • Call recording
  • Older interface
  • Expensive
  • Requires iPhone jailbreak or Android rooting

4. mSpy

mSpy is one of the oldest spying apps on the market and, as such, has a fantastic reputation. It's capable of spying without requiring that you root or jailbreak the target phone.

However, it does have some downsides when compared to the other apps on this list. The biggest of which is the need to physically access the target phone to install the app. Rooting or jailbreaking will enable more features, but that's a more technical process that many users are not comfortable with.

Another downside is the price. mSpy is on the expensive side when compared to other apps with similar capabilities.

That said, it does work very well and has a great reputation for customer service so it may be worth the extra expense if you feel more comfortable with a more established brand.


XNSPY is another well-known spy app that offers a wide range of features. While it falls short in some areas, it is a good option if you are not able to jailbreak the target device.

One area where XNSPY shines is its ease of use. The installation process is very straightforward and the app itself is very user-friendly.

Unfortunately, it does require that you have access to the target phone to install the app. And, like mSpy, it's on the expensive side when compared to similar apps.

In spite of these downsides, XNSPY is a good choice if you need to monitor an iPhone or Android without jailbreaking or rooting it.


There are a lot of gray areas when it comes to the legality of spying on someone, and it ultimately comes down to your unique circumstances.

If you're in a relationship and you suspect your partner is cheating on you, it's probably illegal for you to spy on them. However, in some states, it can be legal if you own the target device.

Because of the variation in laws and circumstances, you must consult with a lawyer before using any of these apps.


Can I Spy On Phone Calls And Text Messages Without Installing An App?

No. There is no way to spy on phone calls and text messages without installing an app.

Can I Spy Without Jailbreaking or Rooting The Target Phone?

Yes. There are a few apps on this list that do not require jailbreaking. However, they all require that you have physical access to the target phone for installation.

Do I Need Physical Access To The Target Phone?

You need physical access to the target phone to successfully install the spy app. Once the app is installed, you will access everything recorded via a web-based dashboard.

Do These Apps Work On All Phones?

No. Some of these apps only work on certain types of devices. Be sure to check for compatibility with the target phone before purchasing an app.


Spy apps give you abilities that can be extremely useful, but it is important to use this ability only when needed and when it's legal to do so. With the right tools and information, you can keep your loved ones safe and know that your kids are not talking to and messaging the wrong people.

Author Katya Seryabkina
About The Author
Katya Seryabkina
Ukrainian born, and a self-taught geek. I started hacking when I was 14 and can write code in 5 languages, but have no formal technical education. The edge of technology is what keeps me interested. I cover cell phone tracking, spy apps, cybersecurity, the dark web, and certain gadgets for The High Tech Society.