To install spyware on the Android phone, you need physical access to it. Here are two most commonly used approaches toward the installation:
Approach 1: You take a device, open its web browser, and enter the URL leading to the APK downloading. The service anticipated the explanation about further installation steps on the go. Do not forget to close the link and clear the web history.
Approach 2: After the purchase and the registration within the service, you’ll receive the online account credentials straight to your email. Access this account and follow the setup guidelines there. Do not forget to hide the app’s icon.
Note: The process is complex. Before undertaking it, find out whether the phone’s version is compatible with the app or needs rooting.