This document provides instructions on how to install and use the 1TopSpy cell phone monitoring software to spy on a boyfriend's LINE messages. It describes 1TopSpy as a powerful tracking tool that can monitor GPS location, text messages, call logs, social media messages, photos and more from the target phone without their knowledge. The summary outlines how to download 1TopSpy on the target phone, login to the control panel from another device, and then view the monitored phone's data and LINE messages remotely.