How to spy on another cell phone?

Did you know that you could spy on another cell phone? Nowadays, technologies allow people to spy on someone else without being physically next to a person. It became available thanks to spyware. This type of software is designed to record every action on a cell phone by being installed on it. Meantime, its owner doesn’t know about it. The monitoring market offers such applications: mSpy, FlexiSpy, SpyBubble, Spyera, Copy9, Mobicip.