How to spy on someone’s phone without them knowing?

The IoT has created a powerful solution to spy on someone’s phone without them knowing. It is spyware or spy application. Ordinarily, it runs in the background and remains undetectable on the target device. Thus, another person has no idea they are being spied on. The most popular applications are Mobicip, mSpy, Spyera, Spyzie, FoneMonitor.