Just exchanged my Motorola HF820 portable bluetooth hands-free speaker for the Motorola T305. The 305 paired right away and is working however, after pairing, then trying the speaker a couple of times my phone froze. I turned the phone off and on which solved that problem. Since then, the few times I've used the speaker it seems to work quite well although there is a few seconds hesitation when I answer the speaker (press the receive button) and actually connect with the caller--a minor inconvenience.