Potentially everything we need, but in reality it stops working every few days and the app needs to be reinstalled. It wouldn't be half as annoying if we were warned that the app had been updated and needed re- installing, but that never happens. We only know it has stopped working when a caller complains after being left standing on the doorstep listening to the ring tone and the messages - which we don't hear, no doorbell, no alerts! Please, Ring, just notify us when we need to update our app!