The monitor cuts out and is very hard to get back on. My husband synced his phone first so I have to be a guest and have no control of night vision. Texting in the middle of the night to get it turned on is very frustrating! You should be able to have two main devices.
Very unreliable and we have great wifi with modem in babies room.
Dhope14 about Philips In.Sight M100/B120, v2.3.0