Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent phone but missing some functions

Over all this phone works well with my Vonage. The sounds quality is excellent, and I like the ring tones.I only give this product 4 stars due to several functions of the phone:1. The phone book you added in 1 phone, does not automatically registered in the other phone. You will have to 'send' your phone book to the other phone.2. You have to 'clean' the list of incoming calls (from the caller id) in both phones. There is no function to delete it from 1 phone and applied to the other phone. My old v-tech could do this, and it really helps when you have over 30+ calls a day.3. Related to point #2 above, if you answer call with phone #1, phone #2 will said you 'missed' that call.