I really wanted this phone to work but after going through 2 of them in 6 months I gave up.I loved it for the 1st month though I noticed the signal strength is quite weak. My housemate who is also on Cing and owns a Samsung Blackjack would have all his bars and the Treo 680 could barely make or receive a call.I put in a 1 gig SD to hold music and soon thereafter the phone would freeze a few times a day. I would have to reset the phone by pulling the battery out rebooting the phone. I also had did the "hard reset" a few times and downloaded the software patch - but it didn't help much.The straw that broke this camels back was the headset jack wouldn't know if the headset was in or not. So the phone would be on headset mode even though there was no headset attached. I could answer the phone but the caller couldn't hear me - this was not an isolated incident.After 3 months I got a new phone under warranty and within a month all the old problems resurfaced - leading me to believe that this is a simply a defective product being sold to the public.