Anyone else having bluetooth issues? - Samsung Galaxy S21 Questions

I haven't used bluetooth much on this phone yet, so I don't know if this is device specific or a general problem. Anyway, my phone pairs with my car bluetooth dongle and works normally the first time, but when it's already paired it just won't connect, no matter what. It works again if I unpair it and pair it again, but that's not very convenient...
Has anyone else noticed this kind of behavior and is there a fix for it?

Try clearing the system cache and a network reset.

Well, I don't know what happened or changed but today it just worked... Weird.

Ah, turns out with this phone, I just need to wait until the dongle is properly initialized before trying to connect, otherwise it just gives up and won't even try again.
With my old Huawei, I could do it straight away and it would connect when it's done...

mcfox_1 said:
Ah, turns out with this phone, I just need to wait until the dongle is properly initialized before trying to connect, otherwise it just gives up and won't even try again.
With my old Huawei, I could do it straight away and it would connect when it's done...
Click to expand...
Click to collapse
Try in safe mode. May have a 3rd party app conflict.

Could also be a coincidence and the crappy dongle is giving up.
It's a cheap eBay bought one that renders an mp3 file on the fly so the car stereo can play it like normal flash storage. My wife's Xiaomi also had some issues connecting to it yesterday, and today as I was driving music stopped several times and the stereo said "USB format incompatible", then skipped to the next track and continued. I'm planning on installing an Aux input into the car soon so I can plug a better bluetooth receiver into that, so hopefully that'll solve the problem.

Related

bluetooth not auto pairing

I have managed to pair my phone with my parrot hands free unit in the car. How ever it will not remember the pairing, and each time I step into the car I must manually pair, any ideas?
hmm... from past experiences from SGS1 and SNS
they are bound to automatically re-connect to my car for BT audio streaming, i use it practically everyday
that being said, the experience is the same with past old phones like Treo and Windows phones, although those had some minor annoyances. similar to what you have just described specially the windows phones.
so, it might be possible the SGS2 BT audio profile might not be fully compatible with your car BT receiver.
does it automatically pickup phone calls using the BT headset (handsfree) profile ?
Same here too! Sometimes with my Motorola S7HD or my Sony car stereo x.x
I'd have to go to Settings -> Wireless network -> Bluetooth and manually pair them myself. Ugh.
Any fix for this guys?
I know it sounds silly but after pairing are you accepting the notification to always allow it to pair?
krabman said:
I know it sounds silly but after pairing are you accepting the notification to always allow it to pair?
Click to expand...
Click to collapse
I have this problem with my landrover bluetooth, (I have to pair each time I use the car) However I have never seen a notification to 'always allow it to pair' am I doing something wrong? or is there a setting somewhere that I have missed.
Tom
In my case the problem is not actual pairing. I have a Pioneer bluetooth car stereo. It has been paired but for it to see the S2, the phone must be made visible each time. Despite being paired it still needs to be made visible.
Despite extensive searches, I have never found a way to make it permanently visible. There is a silly timer which turns off visibility after 120 seconds.
Previously, with my old Windows 6 and even Windows 5 phone, I used to just go into my car and go - no fiddling with phones - never even took it out of my pocket. Now I need to make it visible each time and this really bugs me.
Don't tell me it is more secure - that's my choice and should not be Android's choice.
Mahniex said:
In my case the problem is not actual pairing. I have a Pioneer bluetooth car stereo. It has been paired but for it to see the S2, the phone must be made visible each time. Despite being paired it still needs to be made visible.
Despite extensive searches, I have never found a way to make it permanently visible. There is a silly timer which turns off visibility after 120 seconds.
Previously, with my old Windows 6 and even Windows 5 phone, I used to just go into my car and go - no fiddling with phones - never even took it out of my pocket. Now I need to make it visible each time and this really bugs me.
Don't tell me it is more secure - that's my choice and should not be Android's choice.
Click to expand...
Click to collapse
have you tried editing the /system/etc/bluetooth/main.conf file
there is a line
#how long to stay discoverable mode before going back to non-discoverable
#The value is in seconds, (0=stay pairable forever)
DiscoverableTimeout =120
Needless to say try it at your own risk, you will probably need a rooted phone and something like root explorer to edit the file.
Hope this helps
Tom
I too have the same problem. My Philips SHB1400 does not get auto paired. I have manually pair it when ever I want to make a call. Never had this problem with same BT Headset and Nokia 5800
frogfoot said:
have you tried editing the /system/etc/bluetooth/main.conf file
there is a line
#how long to stay discoverable mode before going back to non-discoverable
#The value is in seconds, (0=stay pairable forever)
DiscoverableTimeout =120
Hope this helps
Tom
Click to expand...
Click to collapse
I tried that but I am afraid it doesn't work. I think other people have also tried it in other threads and it does not work either. The timer stays at 120 secs
has anyone tried playing with the blacklist file in the above directory? I tried renaming it and rebooting but it made no difference for me, but my Landrover is not specificaly blacklisted.
Pairing bluetooth with Caddy SRX.... NOT....
I downloaded the Bluetooth File Transfer app and that worked for awhile ... off and on ...... but hasn't worked for two weeks now. I've been to Cadillac - I've been to ATT store - everything is checked correctly that needs to be. This has been ongoing issue for a year now. Any other new updates about this problem ?
Thanks.
I do not get the 'notification to always allow it to pair' on some devices but do on others.
Anyone know why?
I am trying to pair a Uniden cordless phone and keep getting the pin request every time I connect.
While on my car I do get the always allow pair request and everything is fine.

[Q] Bluetooth auto connect

I can't see any option anywhere in my SGS2 to set a BT paired device as "authorized". Every time I enter in my car I've to manually select the BT device and start manually the connection.
I searched in the forum but didn't find answers.
I also tried to look at the filesystem and I found auto_pairing.conf file in which there are a lot of BT manufacturer brands listed in sections like "black list", "white list", .... Is it possible I need to manually modify this file to include my BT manufacturer in the white list section? It sounds really strange!
Is there any other way?
I'd love to know that as well.
I atlculay lvoe my sumnasg glxaay s2 wtih VliaRionlm mroe tahn my xobx
Update
I manually modified auto_pairing.conf file adding my car BT manufacturer without any success (I added it in white list with the name already mentioned in the file, so I think that's not a problem of brand name).
My SGS2 continue to ask me to manually select the device to connect to, even if only one BT device is available (car handsfree).
I have the same problem, which i didn't have with my Nexus One running Cynogenmod ROM. I keep my Bluetooth on all the time or most of the time and i would like (like i had in nexus one) when i turn on my car (with Sony MEX-BT3700U car stereo with Bluetooth) that the phone auto-connects with the stereo in a minute or less (or with my plantronics headset when i turn it on), but no, every time i have to go into bluetooth settings and connect on the paired device and then it's connected.
I heard about few application that could help but it would be nice to have it as native function on the phone. I haven't tried these apps yet but if anyone want's to try they can be downloaded from the market, firs is free, the second is not.
https://market.android.com/details?id=a2dp.Vol&feature=search_result
https://market.android.com/details?id=com.btautoconnect&feature=search_result
If anyone can help it would be greatly appreciated
I don't have this problem at all, on any ROM I've tried stock or not. Is your stereo also set up to auto-connect? And is it your phone or your stereo that's refusing the auto connection?
mudferret said:
I don't have this problem at all, on any ROM I've tried stock or not. Is your stereo also set up to auto-connect? And is it your phone or your stereo that's refusing the auto connection?
Click to expand...
Click to collapse
Stereo doesn't have any options, same as Plantronics headset (only ON or OFF), that means that with my old nexus one running CM (or Nokia n95 8GB) when the bluetooth is switched ON and i come near stereo or headset they connect automatically in about 30 seconds max, with my SGS 2 that doesn't happen, i tried everything but it wont auto-connect until i initiate the connection from phone manually.
I have to resolve this because it's killing me !
jartukovic said:
Stereo doesn't have any options
Click to expand...
Click to collapse
I wonder if that's the issue; IIRC it's my stereo that I've told to connect automatically rather than my phone. I'll verify on my commute home today.
Mine auto connects to my JVC car head unit, but doesn't to my Belkin Tunestage. No idea why. As it happens, this suits me but it'd be nice to be able to control it.
And the commute begins. The auto connection is an option on my JVC deck, no such option on the phone.
Sent from my GT-I9100 using XDA App
mudferret said:
I wonder if that's the issue; IIRC it's my stereo that I've told to connect automatically rather than my phone. I'll verify on my commute home today.
Click to expand...
Click to collapse
The stereo is recognized same as Plantronics and that is as a head set, but it doesn't want to automatically connect to either of them, every time i have to initiate the connection. There is one way to connect it (partially automatically ) but that's not the solution - i have to turn on the bluetooth on my phone before starting my car, then when phone is in searching mode if the car is started (stereo turned on) then it will connect automatically, if the search mode (that is active for a short time after turning the bluetooth) ended before i start the car (for instance if i keep my bluetooth on all the time on my phone) then it wont connect automatically.
Am i any clearer about my problem ?
I hear what you're saying but it appears that auto connection is initiated by my stereo. If I turn auto connect off on my stereo there is no connection until I tell my phone to connect. I don't see anything on the gsii settings to have the phone auto initiate the connection. I have a recent JVC deck fwiw.
Sent from my GT-I9100 using XDA App
I will check one more time is there any bluetooth settings on my car stereo, but i'm 90% sure that it doesn't have, because this is the first phone that doesn't connect automatically.
I have had similar issues with mine, it will pair with my Kenwood DNX520VBT but wont auto connect.
however i now have a workaround
Turn bluetooth on your GS2 first, then turn on you Radio. once my Radio boots up it initiates the connection and auto connect works.
if i turn on the bluetooth on my GS2 after my radio it never works.
ive got a sony bt3700 stereo, it connected perfectly with my samsung wave, i just upgraded to a galaxy s and i have to do it manually every time so its not the stereo.
Same thing happened to me, old nexus one with CM7 is connecting ok but i have to connect SGS2 manually or make sure that my bluetooth is ON on my phone before i start the car.
I may have the answer......
Hi,
I have a sort of work around.
My Pioneer head unit refuses to auto connect to my SGS2 and I have to do it manually (I connect from the radio in 4 clicks but thats not the point). This was driving me nuts as previous handsets I owned connected within 5 seconds of being in the car.
I then discovered ROMS and went for the Criskelo ROM and it put me on Android Version 2.3.6 (Not sure if that made a difference or its actually the ROM).
Now with that sorted I found that I have an extra function in my bluetooth settings. When I make the device visible I can then choose the visible time-out length. If I set this to NEVER then I have no problems connecting to the headunit everytime I get in my car.
The only problem I have with this is that I pop my phone into Airplane Mode each night and because that disables the bluetooth it loses the time-out setting so I have to put the time-out back to never each morning.
With setting the time-out to never I'm not sure what battery drain is like because I'm constantly on my phone and my battery depletes rapidly anyway but it seems like a fix for now.
I hope this makes sense and helps people out until a proper fix becomes available.
Cheers,
DJ Sploits
Hi All,
Sorry for bumping an old-ish thread, but it seemed the most appropriate thread, and better than creating a new one of the same topic!
This is what I believe to be true:
*IF* Bluetooth is enabled on the GS2 (and the phone has previously been paired with the car headunit) then when the car is turned on, it will auto-connect to the GS2
*IF* Bluetooth is NOT enabled on the GS2 (and the phone has previously been paired with the car headunit) then when the car is turned on, it will NOT connect to the GS2 (understandably!).
*IF* the phone has previously been paired with the car headunit, and the bluetooth on the GS2 is enabled *AFTER* the car has been started, it does NOT Auto-Connect.
From this, I assume that when the car is powered on, it searches for previously paired handsets in order of most recently connected first. If it finds one, then it WILL connect.
Now:
If I leave Bluetooth enabled on my phone, the battery is significantly depleted my mid-afternoon.
I've started using an app which uses the "rough location" (not GPS) to monitor where the phone is located. If it deemed to have moved in X period of time, then it enables bluetooth.
This is great, and works a charm ... BUT it does mean that bluetooth stack on the GS2 is enabled AFTER the car has been moving for a period of time, and thus does NOT auto-connect.
What I've been searching for is:
"When BT stack is enabled on GS2, can it look for previously paired devices and initiate the connection itself?" (Rather than the car connecting to it?) Is there a script or app to do this?
Hi WTFH,
I think it might be more headunit specific. I always have my bluetooth on but it wont connect automatically to my headunit unless I have it set to constantly discoverable (on the handset).
I also use a power saving program called Green Power Premium which will cut bluetooth/data/wifi after a certain amount of time when the phone is in a sleep state. Its great fro saving power as my phone isnt constantly looking for a wifi signal (I don';t use it to control my bluetooth though as I need it on for my car).
Hey DJ_sploits,
Thanks for that ... Yes, I understand that some headsets do not auto-connect to the GS2 if the phone is NOT visible.
But what does seem to be constant is that the GS2 will not auto-connect to any of the headsets if the bluetooth stack on the GS2 is enabled AFTER the headset has come online and available.
One workaround I'm thinking of is:
Enabling a profile which says "When connected to a power source (I'll have to use the power adaptor) then enable bluetooth". Connecting my phone to the power first before starting the car should enable the BT stack before the headset tries to connect.
In fact I could extend this to say "Only enable bluetooth when using power adaptor, and not connected to wifi".
It's still a pain to do this though, as I tend to just jump into the car and don't want to faff about with connecting this and that.
The only other work around I use is to set the visiblity to constant (depending on what android software version you are on). My headunit always picks the phone up if I have it setup like this. the only thing with that is it will eat the battery even more (which is annoying considering there are other phones out there that constantly have their bluetooth on and you never see the battery getting hammered).
The only flaw I can see in your method is the fact you need a power source to knock on the bluetooth. Great for powersaving but it would then mean you would have to remember to connect it to a car charger everytime you got in the car (not too bad if you have it constantly plugged in to the cigarette lighter) and as you set this can be a bit of a faff.
The only way I can see in sorting this is using a power saving app but having your visibilty constantly on for the bluetooth and then we just hope it doesnt eat the battery too much (not to bad for me as I have a charger at work but could be a pain for others). The only problem with this (apart from the battery issue) is that if you knock the bluetooth off or knock the phone to airplane mode (as I do at nights) then when you knock the bluetooth back on it forgets that you want it to be constantly visible so you have to go through the settings and check the box

Any way to force connect to a Bluetooth device?

I just got my new car yesterday, a 2012 Hyundai Veloster, and my phone refuses to connect to the already paired system unless I actually choose to connect to it.
In my Toyota Matrix in which I installed a Clarion CZ500, I had no problems auto connecting.
Can anyone think of why this might be happening or know of a workaround? Unfortunately, Tasker doesn't have a feature to connect to a Bluetooth device.
Check out the pairing section.
http://www.hyundaiusa.com/bluetooth/bluefaq.aspx
I'm going to try to set it up through the voice interface, but it shouldn't make a difference.
It started working properly all of a sudden.
Sent from my GT-I9100 using xda premium
rickytenzer said:
I just got my new car yesterday, a 2012 Hyundai Veloster, and my phone refuses to connect to the already paired system unless I actually choose to connect to it.
In my Toyota Matrix in which I installed a Clarion CZ500, I had no problems auto connecting.
Can anyone think of why this might be happening or know of a workaround? Unfortunately, Tasker doesn't have a feature to connect to a Bluetooth device.
Click to expand...
Click to collapse
Having the same problem with my Atrix 4G running GB 2.3.4 and my car stereo (Pioneer MVH-8200BT).
Manual connection works fine. This used to work too, I just can't figure out what broke it (2.3 upgrade maybe). I've deleted the BT profiles from both the car stereo and the phone, didn't change anything. (and yes, the car stereo is set to Auto-Connect).
I find this extremely annoying :-/
Is BT on before the car starts? I found that that's the problem.
Sent from my GT-I9100 using xda premium
rickytenzer said:
Is BT on before the car starts? I found that that's the problem.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
I'll try to reverse the order and turn the BT on after the radio is fully powered up
At the risk of highjacking an old thread:
How secure is bluetooth.
I'm looking at a bluetooth ignition system.
Function:
When a pairing is made, a relay is turned on.
When the pairing is lost, the relay is turned off.
The device gives no indication, physical or via bluetooth about the relay status.
The device is set to non-discoverable by hardware.
The password is a 20 character alpha-numeric code.
The device performs no function and stores no data, it simply operates from the pairing.
How secure would this be? or more accurately, how much time would likely be required to crack this device assuming no physical access?
Also looked into RFID, but that looks to be easy to crack unless I spend silly money on an active encryption system.

[Q] Bluetooth Headset not pairing ICS LPQ

So my Jawbone Prime was connecting fine before I updated to ICS LPQ (was on GB LA4 before) and now it doesn't even show up on the devices list even when I try to re-pair or reset the headset.
I tried 2 different sets to no avail.
Anyone know of a solution?
Connects to A2DP BT Headset (Motorola) but only allows media audio to connect. Phone audio doesnt stick.
ICS has some compatibility issues with certain bluetooth devices.
GB my phone always paired with my car stereo and streamed music without any issues.
So far every ICS release, even official, has caused my phone to reboot after streaming music over BT for 10+ minutes.
Its pretty sad they dropped the ball here. GB worked fine, and they borked it.
Well I can connect my BT keyboard fine. I just tried my Motorola BT earphones which are A2DP and it connects but won't allow phone audio to go through the BT earphones. However Media does go through. At least it detects it.
It doesn't detect it at all on the Jawbone Prime (which is not A2DP).
Update:
I managed to connect my jawbone and actually have 2 phone calls on it. After that I had the phone in my pocket and when I checked maybe 15mins later it had frozen and I had to keep power pressed to shutdown/reboot.
It kind of matches Chakker3D's pattern of working then not working. It's like there's a memory leak in the bluetooth stack? maybe I'm just spitballing here.
What I know is that in GB whenever I deactivated BT it took a good 20-25secs. In ICS it's instant to turn off or on. In GB however there was 0 issues.
I just really hope Samsung addresses it. Or if we are lucky, a dev will rework a rom so this problem is gone.
But from what I can tell, very few are having this problem.
Airbag888 said:
So my Jawbone Prime was connecting fine before I updated to ICS LPQ (was on GB LA4 before) and now it doesn't even show up on the devices list even when I try to re-pair or reset the headset.
I tried 2 different sets to no avail.
Anyone know of a solution?
Connects to A2DP BT Headset (Motorola) but only allows media audio to connect. Phone audio doesnt stick.
Click to expand...
Click to collapse
Sometimes is helps when you change kernel. Give a try
078gregory said:
Sometimes is helps when you change kernel. Give a try
Click to expand...
Click to collapse
Another update:
Without any intervention on my part other than keeping on trying it finally discovered my BT headpiece. In fact it discovered both.
Now it's still not 100% perfect because it discovers it, connects and immediately disconnects. If I press a button on the headpiece while it connects then it stays connected and it hasn't restarted/locked the phone yet. I even connected my 2nd headset (another Prime) and it worked.
Keeping fingers crossed. Now I need to see what happens when I walk out of range and back in range.

[Q] Bluetooth Autoconnect

I'm guessing the answer to my question is likely to setup a Tasker profile, but I thought I'd ask anyway. Does anyone know of a way to get Bluetooth on my OG to autoconnect to a device it's already paired to?
For example, when I get in my car and want to connect to my stereo, I turn on Bluetooth, then have to go to my paired devices and manually connect to the stereo. I'd much rather just turn on Bluetooth and have the phone autoconnect to the stereo.
I'll likely soon set up an NFC tag for my car, so I should be able to turn on Bluetooth and connect to the stereo with that, but wanted to know if there was another solution in the meantime.
Any ideas?
Digil said:
I'm guessing the answer to my question is likely to setup a Tasker profile, but I thought I'd ask anyway. Does anyone know of a way to get Bluetooth on my OG to autoconnect to a device it's already paired to?
For example, when I get in my car and want to connect to my stereo, I turn on Bluetooth, then have to go to my paired devices and manually connect to the stereo. I'd much rather just turn on Bluetooth and have the phone autoconnect to the stereo.
I'll likely soon set up an NFC tag for my car, so I should be able to turn on Bluetooth and connect to the stereo with that, but wanted to know if there was another solution in the meantime.
Any ideas?
Click to expand...
Click to collapse
As long as I turn on Bluetooth before I start my car, mine auto-connects to my Hyundai Sonata just fine...
Sent from my LG-E970 using xda app-developers app
My phone auto connects to my car too. Even if I forget to turn it on before I start my car and toggle it on after the car has already started, they will find each other and auto connect. They do not connect instantly though (maybe the BT scan interval is a little bit longer). Maybe you just have to wait a bit?
I have Llama installed and have a profile setup so that when it disconnects from a known Wifi (leave home/work/etc.), the phone will turn on BT automatically and try to connect to the car. Another profile is set up so that once the BT does connect to the car, it will turn off Wifi on the phone and also turn up volume and vibrate "on".
Hmmm, thanks for the replies. I'm wondering if my issue is that I've only turned Bluetooth on after the car was running, not before. If anything, I'll just set up a Llama or Tasker profile. Thanks again!
Digil said:
Hmmm, thanks for the replies. I'm wondering if my issue is that I've only turned Bluetooth on after the car was running, not before. If anything, I'll just set up a Llama or Tasker profile. Thanks again!
Click to expand...
Click to collapse
Yeah, if I turn on bt after I start the car then it won't auto-connect.
Sent from my LG-E970 using xda app-developers app
Just a heads up to anyone interested. Tasker doesn't have an action to autoconnect to paired Bluetooth devices. However, there is an app available in the Play Store solely for this functionality:
https://play.google.com/store/apps/...sMSwyLDEsIm9yZy5teWtsb3MuYnRhdXRvY29ubmVjdCJd
This app is also a Tasker plugin, so you can use it in conjunction with any Tasker profile. Good stuff.
Digil said:
I'm guessing the answer to my question is likely to setup a Tasker profile, but I thought I'd ask anyway. Does anyone know of a way to get Bluetooth on my OG to autoconnect to a device it's already paired to?
For example, when I get in my car and want to connect to my stereo, I turn on Bluetooth, then have to go to my paired devices and manually connect to the stereo. I'd much rather just turn on Bluetooth and have the phone autoconnect to the stereo.
I'll likely soon set up an NFC tag for my car, so I should be able to turn on Bluetooth and connect to the stereo with that, but wanted to know if there was another solution in the meantime.
Any ideas?
Click to expand...
Click to collapse
I have a very similar issue. I have two bluetooth devices in my car. My handsfree system and a stereo adapter. The phone autoconnects to the handsfree system but I have to manually click on the stereo adapter every time to get it to connect. No ordering of on/off etc seems to alleviate this. Any ideas?
themoe said:
I have a very similar issue. I have two bluetooth devices in my car. My handsfree system and a stereo adapter. The phone autoconnects to the handsfree system but I have to manually click on the stereo adapter every time to get it to connect. No ordering of on/off etc seems to alleviate this. Any ideas?
Click to expand...
Click to collapse
The app I mention above has an option to autoconnect to all paired devices. This might be what you're looking for.
Digil said:
The app I mention above has an option to autoconnect to all paired devices. This might be what you're looking for.
Click to expand...
Click to collapse
Yea, already gave that a shot. Tried just the app, then tried a tasker profile that would try to connect to the A2DP device if the handsfree device was connected too. Neither worked. Gonna try another couple apps to see where it gets me; if not I'll just live with having to always click it in the settings menu until an AOSP rom comes along that I would be willing to run (not quite annoyed enough at the LG software to give up an SD card/8gigs and hardware keys)
themoe said:
Yea, already gave that a shot. Tried just the app, then tried a tasker profile that would try to connect to the A2DP device if the handsfree device was connected too. Neither worked. Gonna try another couple apps to see where it gets me; if not I'll just live with having to always click it in the settings menu until an AOSP rom comes along that I would be willing to run (not quite annoyed enough at the LG software to give up an SD card/8gigs and hardware keys)
Click to expand...
Click to collapse
Try this app. Have been using it for a long time now. I have the same problem as you. You can set it up to automatically connect to a second device ( your music adapter), right after it connects to the first one ( your car). There are also more useful settings there.
https://play.google.com/store/apps/...nav_result#?t=W251bGwsMSwxLDMsImEyZHAuVm9sIl0.

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