I have a BT Synergy 4100 Quad in my house and I will be replacing it very soon. It is ok but we have had a few issues with it over then past year. One thing I must say is that I always keep a corded phone in one socket just in case the wireless ones ever stop working. Ok to cut a story short the battery life in each handset has decreased dramatically over time in that before we could keep a handset in one room or on desk for ages but now it is only 1 hour maximum. This is annoying when a call comes through but the phone next to you rings for 1 second then cuts off due to low battery - and then I must run to the other phone (assuming its in its ...  Read the complete review

We had this phone for just over a year, and were impressed with the sound quality, and the various features such as up to 11 minutes digital recording time, 255 name and number phonebook, mobile phone SIM card copy feature, text messaging with 50 text memory feature. All the features were quite simple to use, with the help of the easy to follow instruction booklet which comes with the phone. We had the main phone and then another base. We also had another plug in phone in the house, as these phones cannot be used in the event of a powercut. We needed to do this because we do have some wiring issues which causes power to trip at times! The handsets ...  Read the complete review

The BT Synergy 4500 is a digital cordless telephone with a built in answering machine. We have owned this phone for about a year now purchased from Argos for £49.95. Before we purchased this phone we were the unfortunate owners of a BT 2015 Quartet phone but after reading reviews on the BT Synergy we decided to go with another BT model. The BT Synergy 4500 has up to 255 name and number directory and if you wish to pay extra through Bt you can assign Caller display service and have ringtones for specific callers on this phone. It is also possible to send text messages from this phone, with available storage for up to 50 text messages. You can either choose to record your .  Read the complete review

The BT synergy 4500 is, largely, a good phone. The call quality is very good and it is comfortable in your hand while pressed up against your ear. The buttons on the phone are big and easy to use. You can store up to 255 names in the phonebook, and you can also (for an extra price) add caller displays and specific ringtones for each caller. Another useful feature of this phone is that you can text from it. The screen isn't that big, and isn't colour, but despite this I've found texting to be easy, largely helped by the large number buttons. Overall, this is quite a good phone. The call quality, while not excellent, is quite good. ...  Read the complete review