Sony Ericssons work very well. T610 that's way too old. I recommend one of the following: Sony Ericsson K750i, K600, V600, V800.
←
My Sony Ericsson K750i is 'paired' with the car, but as soon as I try to send contacts from the phone to the car, the connection drops. Sony, Lexus Customer Services and my dealer have not been any help at all in offering any suggestions as to what the problem could be.
←
The connection is meant to drop so that you can transmit data to the car base unit - once transfer is complete, normal BT connection should be re-established in 5-10 seconds. Problem generally you will find is that after transfering 3-4 line items (say on a 6310i), the phone and car need to be re-set to work normally.
Tony