A trance can be defined as when an individual slips into a different state of consciousness. The idea behind entering a trance is to gather information, whether it be from a spirit guide or another otherworldly spirit.
Many individuals enter trances and allow other spirits to use their bodies to communicate in our world. In some instances, spirits may be able to use the body of a psychic medium to speak to other people in the room, divulging important information or direct messages.
If you're interested in learning more about the process and why trances are beneficial during psychic phone readings, don't hesitate to speak to your medium. Your medium can tell you more about trances, as well as other tools of communication that can be used to reach the dead. In the end, you'll be more knowledgeable on the subject and may get more out of your readings.