Released in 2010, mSpy is already trusted by over a million users and has been an industry leader ever since. Well, unlike other device trackers, mSpy provides a 100% transparent and reliable service. In several mSpy reviews, a lot of people are concerned about its legitimacy. Part 2: Is mSpy Safe and Reliable? Is mSpy Legit? Therefore, if you want to know how to install spy software on a cell phone remotely, then mSpy would be an ideal solution. The best part is that you can run mSpy invisibly to track any smartphone without them knowing.