Review on 📞 AT&T TL86003 Cordless Handset Accessory - Silver/Black, Requires AT&T TL86103 for Operation by Carmen Martinez

Haven't tried the bluetooth function but other than that the phones work fine. The only problem I've had with them is that if the second line rings while the first line is busy, the sound quality on the first line immediately becomes tinny and muffled and has that horrible echo that makes a conversation almost impossible 'Cause it's so distracting when you're talking to yourself. This also happens when the second line is ignored, disconnected or disconnected and the quality of the entire call is terrible.