I brought these phones more than 3 years ago and they are excellent quality and still going strong - in that time we have had no nuisance calls.The phones are very easy to set up, the most onerous thing you need to do is add all your contact phone numbers into the phones directory. There is a comprehensive instruction booklet provided.When I brought them I thought I would have to set something up in order to block the nuisance calls, but no that is done automatically, if the callers number in not in your contact list your phone does not ring. The unknown caller will be told ‘Callers to this number are being screened by a BT call blocking system’ they are then asked to announce their name and press #, then wait for the phone to be answered. The majority of nuisance calls ring off at this point, if the unknown caller does state their name and press #, the phone will ring and you are told it is an announced call. At this point you hear the persons voice/name, a message then gives you instructions on what number button to press dependant on whether you want to answer the call or not. This service is at no extra cost to you.I use the hands free facility a lot, really good if there are a few of you in the room wanting to listen to and speak to the caller. Also if there are a few of you in different rooms, each of you can lift up a receiver and join in the same conversation.Good volume levels.I believe you can sync your mobile phone somehow, but after 3 years I haven’t managed to get round to it.Excellent phone if you are looking to eliminate nuisance calls, a must for all older people.Highly recommended.