Caller ID and Call Waiting on this VTech phone mean that you don't need to guess who's calling you. It shows the name and number of incoming calls, so you can easily dodge any you don't want to answer. The nuisance and unwanted call blocker means that you can stop those annoying callers from hassling you.Good to know- Just pop the handset back into the cradle to charge it- 15 minute answer phone time means there's lots of space for messages- Use the phone easily when you're busy thanks to the handsfree speaker phone function__________Please note: You must subscribe to a Caller Display service from your network provider for the nuisance call block and caller display features to work. Charges may apply.