We have one of those phones that has the main base and then two additional phones with their own chargers than you can place anywhere in the house. The main base sits on my desk. One of the phones is in the kitchen. The other phone is upstairs in our bedroom.
I was sitting here at my desk watching a movie and happened to glance over and noticed that the phone "line in use". I thought it was odd because I could see two phones from where I was sitting and the only person upstairs was Lexie. I checked each phone downstairs. Both were fine. I went upstairs and the phone was laying on the floor (where I left it) and was on. No one had been in that room for HOURS, so I have no clue how it got turned on.