A more natural enemy of the Roomba are mobile charging cable lying on the floor. So watch that if you remove the phone from connector that the cable is not dangling down.
The main problem is the charging station. Although this is to the wall according to the instructions with the back, the Roomba pushes this sometimes in a position so that the Roomba can not drive on the contacts. With laminate really bad, at carpet I can imagine that it can work better.