When I first got the phone things were good. Though the ammount of bluetooth use was small. It hooked up to my GPS quite nicely so I have handsfree while driving. No worries. However: One day I tried to bluetooth a file to someone else with a desire, and the phone started to cycle booting. I later realised that we hadn't paired the two phones, only scanned and seen them, but not actually PAIRED them. Only when I actually turned it off then back on, did it behave. Didn't put any thought to it. Now, I am trying to push files from it to other things. It is doing the same. These devices ARE paired to it. One device is another phone. It has bluetooth but when I say "send via bluetooth" different things happen. Either: 1 - it sees the device from the list and starts a "three stage" thing where it connects, initiates a slow 1 - 30 step sliding bar going across the screen then says it can't do it. 2 - it reboots and hangs. To get the phone working, I have to let it re-boot and put in my pin, then the phone is only partly working. I have to turn it off then on again and all is ok. In the way of bluetooth stuff I have: bluetooth file transfere (app) ASTRO file manager OI file manager. Irrispective of which I use I see the common screen where I see a list of devices and can select the one I want. I have tried a laptop with bluetooth - obviously - and get the same results happening. I am only trying to "push" the file. With the bluetooth file transfere program I can "scan" the remote machine, but the same thing happens and the phone just reboots. I don't think it is anything "wrong" with the phone, just me not setting something - or the deivce to which I am doing it doesn't like it. It just seems strange that both a phone and a laptop yield the same result. Anyone? Oh, I am only using android 2.1 It is a HTC Desire. Locked. New - maybe a month old. Thanks.