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Bluetooth turns off randomly

Hi,
I am using my HTC Touch Pro with an Opel Vectra built-in bluetooth carkit.
All functions, like browsing the address book and call registers, are working fine. However, at random times, my carkit reports no phone. When I then check my Touch Pro's bluetooth status, I see that it is has been disabled.
After manually re-enabling it, I can pair with my carkit for as long as it takes for bluetooth to turn itselves off again.
I've already tested with JETware, but that does not change anything. Also tried the universal broadcom bluetooth stack, but doesn't seem to work on the Touch Pro. HTC only comes with a standard answer that they don't support all carkits and headsets... Since the BT stack on the phone seems to crash, I don't think it's a carkit issue.
Anyone here with the same issue? And maybe a solution?
Thanks and regards!!

Start -> Settings -> Connections -> Bluetooth -> Timeout (tab). Turn off Visible mode set to "Never".
I think this must be your problem.

Hi Freco,
Thanks for your reply! This option is set. However it's not really the visibility that turns to invisible, but the whole bluetooth stack is being turned off completely. Need to fully re-enable it via Comm Manager.
Any other options? Does anyone know if there is a working broadcomm stack for the Touch Pro?
Regards!

Hi,
I have exactly the same problem with a Vauxhall kit, I have tried all sorts of things, but nothing seems to work

try:
start -> settings -> connections -> bluetooth
timeout tab
select 'never' from drop down box

Hi Brendo,
Unfortunately this doesn't solve the issue. Once paired, the connection even works without being visible. It's also not a fixed period of time before the disconnect takes place (can be within a minute, sometimes after half an hour). However, the whole bluetooth icons disappears from the top icon bar and comm manager shows it's turned off completely.
Hope somebody has any other ideas, because the only thing HTC can do is point to the carkit vendor :-(. Since all functionality is there when connected and the phone is turning off BT in some way, I really don't think this is caused by the carkit vendor. I should at least expect BT to stay enabled on the phone.
Thanks!

Yes, same here, BTW I have tried this in my Friends Saab, and the same problem.

same problem here with a Opel DVD90 buildin bluetooth carkit.
With other htc phones it always worked like a charm, but my mda vario IV continuously disconnects after a random time period and shuts down the complete stack.

Try this!
I have the same problem with my opel with original bluetooth-kit (2007). On the touch pro I changed the band and network from auto to GSM, as G3 reseption in this area is quit poor, especialy while driving. It helped for me, at least the last few days. I agree this has been an annoying problem.

I have tried to switch to "GSM only mode" in the past, but as far as I remember it does not completely solve the issue. However, I will give it another shot! Actually I can't figure out at what point it occurs... It can happen within a minute or after half an hour without using any funtion.
Does one of you know if there is a way to do some debugging on the Bluetooth stack?
And has anyone experience with other Windows Mobile 6.1 based phones in this combination (just curious if it's a WM issue or HTC only)?
Furthermore I did some tests with JetWare. You should be able to limit the number of synchronised items then (might be related to this issue). However, it looks like this configured limit is being totally ignored: when I limit my recent call list to 5 with JetWare, it still syncs about 25 items. Anyone tested with Jetware?

I have tried the GSM only mode, this didn't help either
I have now given up and got myself a Nokia E66, which works perfectly.
All contacts are pushed to car, no disconnects and AD2P works so my mp3 ringtones play through the car speakers! Sweet
Word of note, I had issues with N-Series phones, would connect ok, but contacts would not push.

I have the samen problem with my HTC Touch Pro and Saab.

bluetooth pairs just fine with my pioneer bluetooth enabled deck, but the problem iwth mine is once i receive a call sometimes no sound comes from the car, instead the earpiece is still on. but if i initiate the call first sound works just fine and earpiece on the phone is disabled, BUT once the call is ended bluetooth disconnects randomly and the phone takes a good 1-2min to reconnect. i absolutely hate the bluetooth on this phone!

ExTREmE99 said:
bluetooth pairs just fine with my pioneer bluetooth enabled deck, but the problem iwth mine is once i receive a call sometimes no sound comes from the car, instead the earpiece is still on. but if i initiate the call first sound works just fine and earpiece on the phone is disabled, BUT once the call is ended bluetooth disconnects randomly and the phone takes a good 1-2min to reconnect. i absolutely hate the bluetooth on this phone!
Click to expand...
Click to collapse
I am having the same problems you describe. Anyone got an suggestions???

I encountered the same problem; first with an opel udp carkit and next with the bluetooth interface software from homeseer.
It has something to do with phone signal loss.
With the opel carkit I noticed bluetooth automatically turns off when the phonesignal switched from 3g to gsm.
I also noticed that in my home, BT turns off whenever I have been in a room with no phone-signal reception.

try this thread, both registry change and attached cab file, reset. DOn't worry if the make visible to all option is unchecked.
http://forum.xda-developers.com/archive/index.php/t-314996.html

After Bluetooth phone goes silent

Hi i'm having a small issue with my att fuze...i use my phone as an mp3 player in my car, i use s2p and s2u2 to automatically play when i start my car...
the issue im running into is this.....when i turn my car off, the bluetooth disconnects, and my phone goes to silent mode instead of staying at whatever volume setting it was at...ive missed so many phone calls because of this...
since then, ive tried getting use to changing volume back to normal, but its a hassle...
ive searched the forums, and found a few people with the same issue, but no solutions...ive experienced this with my fuze, and my hermes...
if anyone can offer any help, i'd greatly appreciate it

Enable SMS over Bluetooth?

I have the Kenwood DNX8120 and it works fine with my Fuze (did have disconnect issues but just updated the Kenwood firmware which should take care of that) but the SMS feature on the radio doesn't work. I know only certain phones are compatible with this feature but on the Kenwood compatibility list there are several HTC devices that work. In any case, does anyone know how to enable SMS over bluetooth on the Fuze?
Thanks

I have the Kenwood DNX8120 in my car and have had no luck getting the Fuze to work correctly. It constantly drops connection. I updated the Bluetooth firmware and that only seemed to make matters worse. It will pair with the Kenwood, but either won't make a phone call or will take up to 60 seconds (or not at all) for the Fuze to recognize I it the call button on the radio. SMS, sent and received call history also do not work.
Have you had similar issues?

I can not get sms working. The only other issue I have is that after a call, it drops the connection. If I get another incoming call, it will reconnect and the radio will ring and handle the call. But, if I want to place a call, I have to either select "set as hands free" of something similar, in the bluetooth settings on teh phone and it reconnects and I can dial. I just upgraded to elite rc3 and the problem is still there. I havn't messed with it enough yet to know if it dials ok without having to bring the phone out of standby yet. I too have updated the bluetooth drivers from Kenwood and that didn't help. I also tried the jetware handfree extension and didn't see any improvement.

I called HTC about this, and they told me it only "officially" supports a hand full of car units. Mostly in the Audi and BMW. They don't "officially" support anything from Kenwood so they were absolutely no help on this. I've also noticed this phone drops all connections except cell and data when it sleeps. Wifi, GPS and Bluetooh all seem to go to sleep with the phone. This seems to make bluetooth pretty useless if the connection drops every time the phone sleeps and needs to be manually reconnected.

I haven't seen it drop the bluetooth connection during sleep. I see that the Kenwood supports some HTC devices but not this one specifically. The other wierd thing is that the first time it pairs it shows the battery indicator but after the next connect it doesn't show it. It shows the battery icon but shows it empty. The jetware extension however does fix that. I will play some more with it and report here.

After resetting my phone to AT&T's original setup, I am experiencing the exact same functionality as you. It now sync's my call history and phone book. No voice dial support or SMS yet. (These have never worked with any of my phones) It will disconnect after a couple phone calls and I have to set as hands free to reconnect. Also, mine still looses the connection to the unit when it goes to sleep. I'm keeping it on a car charger for now and turning off any sleep function when charging. That at least keeps it connected until I make a call. It's almost still not worth using with having to reconnect hands free. Maybe if a hands free quick connect shortcut could be created?
This is all really ridiculous that a phone with this kind of tech can't auto pair and be ready for a call. My LG Chocolate had absolutely no problems with the Kenwood. As soon as the Kenwood finished booting the LG would auto connect and be ready for a call.

I thought I found a workaround at
http://forum.xda-developers.com/sho...ghlight=bluetooth+connection+drops+phone+call
But, once installed an trying to run BT Restart I get an error saying that I need .net compact framework (version 1 or 2) installed. Not sure what to do now, cant seem to find a cab for this.

I've used this package from another post on the forum. It has many useful apps including the latest version of .net compact framework.
http://www.tyguy.net/_xchg/PPC/@essentials.rar
Let me know how it turns out!

I will take a look but I have 3.5 already installed. I guess that app needs the older version. Not sure I want to mess with downgrading it.

Not Kenwood
Hey Guys,
I drive a Jag XK8 and it has the same issues you are mentioning with your Kenwood, but its an Alpine unit, it drops calls, and after the first call connects the second call rings on the stereo but you can only answer on the handset.
I also recently had a new Jag XF for a week. It had a full integration to the phone. It also only showed the battery status when the phone first connected then the battery showed empty. It would drop bluetooth connections constantly on some days (every 90secs) and then somedays it would keep the bluetooth connected without issue. Very unreliable.
The reason I bring this up, is just to let you know these issues are not limited to the Kenwood.
Dave

Just an FYI. I have found it easier to just go into setup in the Kenwood and reconnect the bluetooth from there when the phone disconnects. It's under Setup/Bluetooth/Set, then just click on the device and hit connect. It seems easier than fiddling with the phone while your driving.

[Q] Another bluetooth problem

Anyone have this problem or have an answer for me.
My Sensation connects automatically to my car handsfree system (Honda Accord) and mostly works fine.
The problem occurs when it disconnects and I`m away from the car. Whenever I make a call the loudspeaker turns on and I have to manually turn it off before taking or making the call.
Also, when somebody rings me the phone doesn`t ring, it just makes a quiet beep so I miss a lot of calls. the only way I can stop it is to restart the phone, I can`t find any settings to solve it.
Don`t know if its related but I have Carhome ultra and Vlingo installed but the problem occurs whether or not I run these programs, I only have to connect to the cars bluetooth system.

Nobody else have this problem? Or able to offer any clues as to why it might be happening

Strange bluetooth and car audio connection issue

I have the AT&T Galaxy S II Skyrocket and my phone used to auto-connect to my car via bluetooth without any problem, even after upgrading to ICS in early July. All of sudden since yesterday a problem has popped up: whenever I start the car, the car's control panel shows "bluetooth connection successful" or something similar, and then the car audio system switches into the talk mode as if the phone is in the mid of a phone call. Of course I am not in the middle of any phone call. So there is no audio heard (no radio, no cd playing, etc). I try to press the button on the car's panel to disconnect the call but it always returns to that talk mode. After some tests I find out that if I make any phone call, the call will be disconnected immediately and the status of my car's panel returns to normal. But next time when I start the car, the issue appears again until I make any phone call.
At the beginning I thought something was wrong with my car. Then I tried two other phones: one was iphone 3G, and the other was an old htc magic with android 2.2. Both of their bluetooth systems worked well with my car. So I believe it is something wrong with the Galaxy phone. However I am not sure what could be the problem exactly.
My phone is not rooted.
Any help is highly appreciated!

Have you tried unpairing the skyrocket and your car? Sometimes you just need to break the connection and set it up again.

Reported questions go in q&a and there are threads on Bluetooth issues
Sent from my SGH-I727 using Tapatalk 2

Firedcylinder said:
Have you tried unpairing the skyrocket and your car? Sometimes you just need to break the connection and set it up again.
Click to expand...
Click to collapse
Yes I have unpaired the connection, restarted the phone and the car, and paired them again. But the problem persists.
Today I tried my wife's iphone 4 with the car the didn't see any problem. I am pretty sure there is something fishy with the phone.

lik88888 said:
I have the AT&T Galaxy S II Skyrocket and my phone used to auto-connect to my car via bluetooth without any problem, even after upgrading to ICS in early July. All of sudden since yesterday a problem has popped up: whenever I start the car, the car's control panel shows "bluetooth connection successful" or something similar, and then the car audio system switches into the talk mode as if the phone is in the mid of a phone call. Of course I am not in the middle of any phone call. So there is no audio heard (no radio, no cd playing, etc). I try to press the button on the car's panel to disconnect the call but it always returns to that talk mode. After some tests I find out that if I make any phone call, the call will be disconnected immediately and the status of my car's panel returns to normal. But next time when I start the car, the issue appears again until I make any phone call.
At the beginning I thought something was wrong with my car. Then I tried two other phones: one was iphone 3G, and the other was an old htc magic with android 2.2. Both of their bluetooth systems worked well with my car. So I believe it is something wrong with the Galaxy phone. However I am not sure what could be the problem exactly.
My phone is not rooted.
Any help is highly appreciated!
Click to expand...
Click to collapse
Common problem:
http://forum.xda-developers.com/showthread.php?t=1630021
Also look in the last couple of pages here, there is some explanation for it.:
http://forum.xda-developers.com/showthread.php?t=1701189