Spying via some malicious app on the target phone is not a new thing but it can be very uncomfortable and even against the law in some countries.
Infecting the target phone can be done in various ways, another person can intentionally download and install applications on it, and you can install them via some phishing attacks or by an online scam. Once installed this piece of software presents a very serious invasion of privacy since it can track text messages, track phone location in real-time, record calls in real-time, eavesdrop on calls, take control of the camera and microphone, and many other applications.

Here are some common symptoms of mobile phones infected with spyware.
Symptoms of spyware
Random reboots
Slow performance
Strange text messages
Overheating
Unusual high data usage
Non-familiar apps in the app list
The fast drain of the battery
Long shutdown time
Strange interference and sounds during calls
Signs of activity during standby mode
If your phone exhibits any of these symptoms you might have a spyware app installed and running on it.
Common spy apps
There are many apps that have been designed to spy on people that can be downloaded in the app store or on Google Play today. Most of these spyware apps are aimed at parents wanting to keep an eye on and protect their children. However, these can be used by anyone in order to spy on a target person via their phone.
Below is a list of common apps that can be used to spy on you. Many spyware apps require a phone to be ‘jailbroken’ or ‘rooted’ before being installed, this is when the phone’s operating system is changed to allow the phone to become unlocked and customizable.
mSpy : An undetectable spying app for iOS devices. It can be used to read your chats, see your location, view your email, check your call history, record your keystrokes, and more.
Spyera : This app requires rooted and jail-broken iPhones to work. It can go undetected and monitors phone calls and your call history. It even allows call recording and eavesdropping on live calls.
Flexispy : Flexispy prides itself as the #1 phone monitor for parents and can monitor everything from calls to social texts.
Umobix : This powerful spyware app has a dashboard that allows users to easily monitor someone’s location, calls, texts, keystrokes, all major social media, and more. You can detect Umobix because it heats up the infected phone and greatly affects the battery life of the infected device.
Ikey Monitor : Although it requires the device to be rooted for Android or jailbroken for iPhones, this spy app captures keystrokes, passwords, and screenshots, allows for call recording and supports multiple languages.
Clevguard : Available for both iOS and Android, Clevguard allows users to track GPS and Wi-Fi locations, capture screenshots remotely, and more. Due to a recent update, the spy app drains the target phone’s battery significantly.
Remove spyware from your phone
If any of the beforementioned apps are present on your phone you need to remove them right away.
Go to your phone settings and remove the malicious applications, then download some protection suite and scan the whole phone for any other trace of software remains or other malware apps.

The application settings screen will open, in upper tabs locate Compatibility and left-click on it.
After the click, you will find yourself in application compatibility settings.
In this window, you will face different options to run the chosen application in various modes in order to make it run. How settings are self-explanatory and different applications will need different settings sadly we can not cover them all but your safest bet is to run them in an environment where they have worked.
For example, if the application was working fine in Windows XP and required administrator privileges, check Run this program as an administrator and Run this program in compatibility mode for Windows XP.
Rollback using system restore
Interesting information has come out from Microsoft, Windows 11 dark theme will include a different sound theme from its standard light one.
When in dark mode on Windows 11, the system sounds generally become softer, and they echo a bit, creating a more soothing experience that matches the overall look and feel of the dark mode. Flipping back to light mode brings the system sounds back to their normal level.
However, even though the light model has slightly louder sounds than the dark mode, Microsoft has taken great care to make sure the audio is more soothing, according to a report from CNBC.
The designers of Windows 11 took inspiration from an approach called calm technology. Microsoft’s Christian Koehn and Diego Baca wrote about calm technology in a post on Medium. In it, they said, “Windows 11 facilitates this through foundational experiences that feel familiar, soften formerly intimidating UI, and increase emotional connection.”
According to a Microsoft spokesperson in a statement to CNBC, “The new sounds have a much rounder wavelength, making them softer so that they can still alert/notify you, but without being overwhelming.” 
Since this requires registry tweak, please follow given solution step by step

