This document describes how to use 1TopSpy cell phone tracking software to track Line chat messages on a mobile phone. It provides instructions on downloading and installing the 1TopSpy app on the target phone, logging into the 1TopSpy control panel from another device, and using it to monitor the phone's location, calls, messages on apps like WhatsApp and Line, photos, internet browsing history and more within 5 minutes in a discreet way. It claims the software is very easy to use, provides 24/7 support and encrypts data with 256-bit encryption.