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[Q] Pairing Tablet as Bluetooth Receiver?

This topic is pasted all over the net and it doesn't seem to be getting much attention, however I think it should be brought to a better light.
The idea is simple: Enable your Android Phone or Tablet to become a bluetooth reciever(to replace a headset or bluetooth speakers) and broadcast audio to the device and broadcast microphone from the device.
This could be used in several different applications:
1. Using an Android Tablet as a Car Stereo Interface
(Connect Phone to Tablet Via Bluetooth and use it as a hands free speakerphone, or aux out to your stereo)
2. Multiple Android Phones
(Have a business and personal phone? Answer all your calls from one.)
3. Phone or Tablet as Bluetooth Speaker/Mic
(Skype, PS3, Xbox 360, TV, Google Voice)
I would use several of these options on a daily basis, and would most definitely pay good money for an app like this.
So my questions are:
1. Is this possible?
2. If it is, how hard would it be?
3. If it isn't that hard, why hasn't someone done it yet!?
Bump if you want this too!

Just wanted to bump this because we need to put our heads together here and get this done. I need this capability for number 1 on your list of potential uses. I also would pay good money for an app that enabled this. Phones and tablet are rooted and ready to modify whatever is needed. Ii've bumped a couple other threads today as well.

I would also pay for this!

I have been looking for this for a while. I use an old LG Eve in my car and my Captivate's Wifi connection for GPS but I would love to have it work for calls and music too.
I would pay as well.

bumping this just to say that I'm going to research the rules and process for starting a bounty. obviously the smart people we need to work on this need motivation lol
Sent from my GT-P6210 using XDA Premium HD app

Hi there,
just wanted to leave an incentive kind of post to say that I've also been looking for exactly the same thing.
My hunting on Google play just stopped after finding this post on XDA.
It's a kind of confirmation that there isn't a solution yet.
Since our rooted androids are more than capable of acting as a Bluetooth receiver, whether they may be based on new or older hardware, this seams like a very logical step in their lifecycle instead of getting forgotten in a drawer full of old and unused electronic waste.
Some doubts:
is a2dp required for this?
Is a2dp hardware related or simply a software feature?
Personally, I could live with a simple one way communication from a phone with mobile network (sender ) to the receiver. The used mic could still be the one on the sender side.
Wouldn't even need to have the receiver in a visible place as I would just connect a stereo cable from its headset output to an aux input on a hifi or a car stereo to hear music or acting as a hands-free system.
Hope this gets some real attention.
Cheers

In one year, nobody found a solution??

I can't beleive there is STILL no progress on this. Maybe I'll try asking a dev that has made similar apps the feasibility of this. There are so many practical uses for this that I cannot beleive no one has capitalized on it.

This would be a killer app if done right. Who here doesn't have an old phone laying around gathering dust? This could start off small; simply enabling the phone/tablet to be essentially a Bluetooth speaker, but then gain features and an interface using A2DP, which would evolve it into a killer way to make any car (with at least a tape deck) able to have full Bluetooth integration and control. I really hope someone can do this!

Bump

Bkb -> p -> PC (either wifi/blu/usb)
yeah so a spare bluetooth phone that connects between a keyboard and PC. Acting like a BT dongle. No way I'm spending 10 bucks for that. if an app...maybe a buck but would prefer free.

looking for this too. Wanting to turn this old phone into a bt audio receiver

Wow, endless searching and now this thread and still nothing :/ i need it for the first idea you listed, did you ever find something?

https://android.googlesource.com/pl.../java/android/bluetooth/BluetoothHeadset.java

Currently the Android Car Multimedia receives Bluetooth Stereo Audio from Phones (Andoird/Apple), how they do it?

Any news?

So many years and still nothing?

May be this is not the right way to do.

I know this is a crazy old subject but others have commented so I don't feel so bad.
I want to make my own android system for my car. I have everything I need for it (hardware/software-wise) except for this one thing.
A few years back there used to be an app called Tablet Talk, it's not exactly what we want but I'm still willing to settle for something like that. The way it works is phone->tablet->handsfree Bluetooth speaker. You could make and receive calls (including seeing the contact names/phone numbers on the tablet) from the tablet itself, then the audio/microphone goes to the handsfree device. Another added feature was when a call is happening the app stops all audio coming from the tablet until the call is done.
Like I said before, it's not perfect but at this point, I don't ever see it happening any other way. I found the app a few days ago, it doesn't exist on the app store anymore, unfortunately, I could get it to run. It just kept crashing.
If anyone knows of something then please let us know.

Years later, found just this thread: I want to do similar thing: Use a private phone (for my sake rooted with custom fw) as a hands-free bt device with an unrooted business phone (non-rooted and secure managed with company tool). I also don't want call forwarding or similar. Just do and answer calls, use phone book and call list via bluetooth like my car radio do for years.
Is there still no solution?

Problem with Bluetooth Car kit

Hi, I'm not able to transfert the phonebook from the phone to the Bluetooth car kit. It seems to start transfert but never end. Whit the Sensation and the same car kit no problem.
Any idea to risolve?

Do you click and allow the prompt on the phone to allow the phonebook connection to start, you only get this prompt the first time the devices connect after pairing. You may need to delete the pairing information and start again to see this prompt again!

Yes, I allow the transfer of phone book just after pairing and I see the indication "phone book transfer" on display of car systems but it never ends and no contact is transfered to systems car. With same procedure the sensation works perfectly. Probably there is something on bluetooh 4.0 that is different from 3.0 implemented on Sensation. Very strange because BT 4.0 is mainly focused on energy saving and should be compatibile with previous release.
Anyone has the same issue?

Same ty[e of problem with BT Car stereo
I can't even get my One to see my Sony BT car stereo- HTC diesre was fine and streamed music and calls perfectly.
Have googled aroudn this issue but can't seem to find a good answer.
Ian

Fairmile said:
I can't even get my One to see my Sony BT car stereo- HTC diesre was fine and streamed music and calls perfectly.
Have googled aroudn this issue but can't seem to find a good answer.
Ian
Click to expand...
Click to collapse
Interesting cause I have Sony DSX-S300BTX myself. if Bluetooth doesn't work on this, I will buy Galaxy Nexus instead. I stream music in my car most of the time.

I had a quite similar issue with a Seat Altea car. It was starting the sync, and arriving at 160 contacts it just hang.
I solved it by making some cleanup and by selecting only the required address book in thé htc contact list...
Sent from my HTC One S using XDA

nnvesp said:
Yes, I allow the transfer of phone book just after pairing and I see the indication "phone book transfer" on display of car systems but it never ends and no contact is transfered to systems car. With same procedure the sensation works perfectly. Probably there is something on bluetooh 4.0 that is different from 3.0 implemented on Sensation. Very strange because BT 4.0 is mainly focused on energy saving and should be compatibile with previous release.
Anyone has the same issue?
Click to expand...
Click to collapse
I am having exactly the same issue!

debabratadey said:
I am having exactly the same issue!
Click to expand...
Click to collapse
Me too with the built in bluetooth system in my Mitsubishi. Old HTC legend worked without any issues.
Any further solutions?
Thanks.

Howto AutoUse BT Pair for Media Audio?

I've touched on this question before but I may have been using some wrong terminology.
On my S3 I have successfully created a BT pairing with a BT Audio Device use which has a steroe out fed into my car's head unit's Aux In.
So, it is Auto-Paired. That is, when I step into my car and turn on the ignition thus powering up the BT Audio Device the paring is available to be used for Media Audio.
However, in order for my phone to route audio to the BT Audio Device I must enter the phone's BT menu and tell the phone to connect to the Device for Media Audio.
I can either do this through the notification pane to see pairings then tap the pairing to use for Media Audio or I can go through settings->BT and do the same thing.
Either way, it's a huge PITA to do this every single time I get into my car.
There has got to be a way to have the phone automatically route Media Audio through this BT Audio Device upon detection. My previous two phones had nowhere near the ability of my S3 but they had no issues whatsoever with automatically pairing and routing audio to this BT Audio Device.
Is the S3 really this stunted in the BT department? If so, is there an app that fixes this stupidity with grace and non-intrusiveness?

crabapples said:
I've touched on this question before but I may have been using some wrong terminology.
On my S3 I have successfully created a BT pairing with a BT Audio Device use which has a steroe out fed into my car's head unit's Aux In.
So, it is Auto-Paired. That is, when I step into my car and turn on the ignition thus powering up the BT Audio Device the paring is available to be used for Media Audio.
However, in order for my phone to route audio to the BT Audio Device I must enter the phone's BT menu and tell the phone to connect to the Device for Media Audio.
I can either do this through the notification pane to see pairings then tap the pairing to use for Media Audio or I can go through settings->BT and do the same thing.
Either way, it's a huge PITA to do this every single time I get into my car.
There has got to be a way to have the phone automatically route Media Audio through this BT Audio Device upon detection. My previous two phones had nowhere near the ability of my S3 but they had no issues whatsoever with automatically pairing and routing audio to this BT Audio Device.
Is the S3 really this stunted in the BT department? If so, is there an app that fixes this stupidity with grace and non-intrusiveness?
Click to expand...
Click to collapse
I feel ya, in the past, all I had to do was toggle BT on and go, now there's two or three extra steps which almost defeats the use of a toggle.
I just started searching for some answers and am honestly surprised no one else has made a big deal about this. If I find something, I'll post it up... For now, going to take a look at some system files and build.prop stuff, but it's not really my department.

Got some NFC tags and NFC Task Launcher hoping I could circumvent the BS with a hardware hack. But no, the best this does is auto toggle the BT radio and open the device selection screen where 2 more taps are required to actually use the device for media audio. Any new insight out there? Considering Tasker app but it is rather expensive and no free version to see if it does the trick.

My Bluetooth Auto Corrects Just fine to my cars Bluetooth... Toggle on and go. Running AOKP currently but it worked properly on stock, stock rooted, and Synergy as well.

I haven't gotten a chance to try this yet but I probably will tomorrow.
Tasker forum post indicating the problem is well known, prevalent and hardly any fixes exist:
https://groups.google.com/forum/?fromgroups=#!searchin/tasker/bluetooth$20audio/tasker/TLsjT9Exle8/ZLlgvEn5vUUJ
An app that forces the connection amongst other things:
https://play.google.com/store/apps/details?id=a2dp.Vol
A Tasker plugin leveraging the force connect code which happens to be GPL'd in case any of our fine developers would like to start making ROMs that address this major drawback of using a S3:
http://code.google.com/p/a2dp-connect/

crabapples said:
I haven't gotten a chance to try this yet but I probably will tomorrow.
Tasker forum post indicating the problem is well known, prevalent and hardly any fixes exist:
https://groups.google.com/forum/?fromgroups=#!searchin/tasker/bluetooth$20audio/tasker/TLsjT9Exle8/ZLlgvEn5vUUJ
An app that forces the connection amongst other things:
https://play.google.com/store/apps/details?id=a2dp.Vol
A Tasker plugin leveraging the force connect code which happens to be GPL'd in case any of our fine developers would like to start making ROMs that address this major drawback of using a S3:
http://code.google.com/p/a2dp-connect/
Click to expand...
Click to collapse
I haven't had any trouble with bluetooth devices reconnecting to my phone as soon as I power them on. I'm running cyanogenmod 10 rom.
Also you can get free trial of tasker from here tasker.dinglisch.net/download.html

zxsix said:
I haven't had any trouble with bluetooth devices reconnecting to my phone as soon as I power them on. I'm running cyanogenmod 10 rom.
Click to expand...
Click to collapse
It seems the issue may be primarily with BT Audio Gateways. I don't have this issue with my laptop at all and I'm imagining car head units rarely see this problem.
That said A2DP Volume App fixed this issue for me. Once configured I did have to manually set the device to use media audio one last time before A2DP Volume started doing it for me. I configured NFC Task Launcher to kill wifi, enable BT and launch A2DP volume when it contacts the tag in my car and it works perfectly. Since NFC Task Launcher front ends into Tasker and Tasker has the A2DP force connect plugin available I'm seriously considering getting Tasker for all the other cool features it can do besides scratching this particular itch.

crabapples said:
I've touched on this question before but I may have been using some wrong terminology.
On my S3 I have successfully created a BT pairing with a BT Audio Device use which has a steroe out fed into my car's head unit's Aux In.
So, it is Auto-Paired. That is, when I step into my car and turn on the ignition thus powering up the BT Audio Device the paring is available to be used for Media Audio.
However, in order for my phone to route audio to the BT Audio Device I must enter the phone's BT menu and tell the phone to connect to the Device for Media Audio.
I can either do this through the notification pane to see pairings then tap the pairing to use for Media Audio or I can go through settings->BT and do the same thing.
Either way, it's a huge PITA to do this every single time I get into my car.
There has got to be a way to have the phone automatically route Media Audio through this BT Audio Device upon detection. My previous two phones had nowhere near the ability of my S3 but they had no issues whatsoever with automatically pairing and routing audio to this BT Audio Device.
Is the S3 really this stunted in the BT department? If so, is there an app that fixes this stupidity with grace and non-intrusiveness?
Click to expand...
Click to collapse
You can fix this relatively easy by getting the app Tasker. I use it to do things like automatically start the music player I want when headphones are plugged in, to turning up the brightness automatically when I am getting an incoming call, etc. I am fairly certain you could set up the program to do whatever you want via bluetooth if you fiddle with it.
Gluck!

mdt73 said:
You can fix this relatively easy by getting the app Tasker. I use it to do things like automatically start the music player I want when headphones are plugged in, to turning up the brightness automatically when I am getting an incoming call, etc. I am fairly certain you could set up the program to do whatever you want via bluetooth if you fiddle with it.
Gluck!
Click to expand...
Click to collapse
LOL, if you had only read the rest of the thread...
Yeah, Tasker cannot do this OTB but with the A2DP Connect Plugin it can. Or you can just run the A2DP Volume app and do the same for free.
That the A2DP Connect code is GPL it would be super sweet if our developers incorporated the magic into the ROMs so that a base install didn't need apps to do something so simple as automatically route media audio to BT gateways.

This happens to me when I use the wrong settings in my cars head unit. My Toyota gives me the option to pair as a multimedia device, a phone or both. If you set it up as just a multimedia device then you won't have some functionality. Check your head unit manual and try to re-pair. You might have to delete the existing pairing for it to work right.

rfmodeler said:
This happens to me when I use the wrong settings in my cars head unit. My Toyota gives me the option to pair as a multimedia device, a phone or both. If you set it up as just a multimedia device then you won't have some functionality. Check your head unit manual and try to re-pair. You might have to delete the existing pairing for it to work right.
Click to expand...
Click to collapse
Yeah, it's not a head unit, it's an audio gateway that basically is just a BT receiver with a stereo out and no interface so it is what it is with no configuration options. This issue with the S3 appears to be primarily related to these types of devices.

crabapples said:
Yeah, it's not a head unit, it's an audio gateway that basically is just a BT receiver with a stereo out and no interface so it is what it is with no configuration options. This issue with the S3 appears to be primarily related to these types of devices.
Click to expand...
Click to collapse
Oh okay. When I look under the bluetooth menu in CM10 I have a paired connection that I named Car Multi-Media and if I look at its settings I see profiles called Phone audio and Media audio. I'm guessing you just have a Media audio profile. Not sure how to help you there. Sorry.

Route Notification Audio through Bluetooth

I have a Sony Bluetooth Car Stereo BT MEX 3600U. If I get a call the stereo will change the CD or FM Radio to the ringing for my phone, I would like to do this with Notifications as I need to know when I get a text. I'd like to also be able to do the same when I am using Google Maps Navigation. If anyone has any suggestions I would love to know. I may also use it for part of my Software Development Degree.

I second this. My Honda Civic's bluetooth does the same thing. It notifies when you get calls while listening to the radio, but you have to change input to bluetooth audio to hear message notifications and GPS. I would love to hear turn-by-turn GPS while using the radio.
Though I feel like it's something on the car's side that has to change.

IDK, I would have thought that you could merely spoof the phone into thinking its recieving a call or it may even be a simple case of channeling the Audio through a different output. I can't see much detail online but hope this thread may get some answers.
Simon

Been researching. Sounds like the car stereo has to be bluetooth stereo audio and hands free compatible. But most car stereo are only hands free compatible.
http://www.subaruoutback.org/forums...nced-when-bluetooth-connected.html#post464175
Possible answer but not fix. I know it's for an iphone but it seems like it's the same problem.

PcFish said:
Been researching. Sounds like the car stereo has to be bluetooth stereo audio and hands free compatible. But most car stereo are only hands free compatible.
http://www.subaruoutback.org/forums...nced-when-bluetooth-connected.html#post464175
Possible answer but not fix. I know it's for an iphone but it seems like it's the same problem.
Click to expand...
Click to collapse
In order to overcome the "handsfree mode only" you can use the BTMono: https://play.google.com/store/apps/...t=W251bGwsMSwxLDEsImNvbS5iZWRvaWcuQlRtb25vIl0.

hmmm thats very interesting but it seams like I just need to force the Audio not to pass through A2DP and instead Use the Phone protocol.
If someone has an APK of the BTmono App It would be very helpfull as Google has locked me out of my account on Playstore

It seams the exact same problem as my stereo will play my phone music if it it set to BT Audio Input. However, It will Always play phone call ringtone.
Edit : After a little research, My Head Unit utilises A2DP for Music, and HFP (Hands Free Profile) for Phone and ringtone.
If I can Modify the route the Notification is sent, from A2DP to HFP then it will work perfectly.

Why has this gone dead !!!!

I've gotten a new stereo about a month ago and everything comes thru my radio even when I have it on Pandora mode it dims he music and my navigation thru the phone comes thru plus my notifications and ringtones that I have set in my phone its a JVC kd-s79bt... Is there anything I can offer to help solve I'm running venom 1.20 and zrboz newest kernel... You can control the head unit thru an app called smart remote its for JVC or kenwood decks with Bluetooth maybe the apk can offer some insights???
Sent from my HTC One S using xda premium

That's interesting I might have to see if It is worth buying one of these for my car, Far less effort

You guys are right.. I connect my phone to my ford sync focus and my phone rings but no notifications... Making an app would hurt would it
Sent from my HTC One S using xda premium

therion0, I think it would be possible but I am not a dev so if any one could help make this a reality, this thread needs to have a few developers on board.

Microsoft Windows Phone 8 can do this
My friend has a Nokia Lumia 920 running Microsoft Windows Phone 8 and his phone does this. His car actually says "In Call" when his phone reads notifications to him (and then waits for spoken commands to act upon them).
Why can't Android?

Bluetooth music issues.

Hey everyone. I'm having a very weird issue. I just bought a brand new Kenwood touchscreen head unit for my 03 WRX and have had it in for about two weeks. When i was using my galaxy note 3, the phone would pair via Bluetooth and play music and calls flawlessly.
Now that i switched to the M8 o have the phone paired. It says paired on the phone and on the head unit. I can make calls, access my phone book, but can't play music. The Bluetooth icon on the phone has the two arrows pointing in and i know on my GN3 that ment media was connected as well.
Any thoughts on how to resolve this issue? Thanks for any help ?

I don't have a solution for you. However when you are pairing the two have you tried going in to the Bluetooth settings and actually making sure that phone and media are both connected? I figure they both must be with it having the two arrows, but just that way we can make sure they are for sure paired.

adavit said:
I don't have a solution for you. However when you are pairing the two have you tried going in to the Bluetooth settings and actually making sure that phone and media are both connected? I figure they both must be with it having the two arrows, but just that way we can make sure they are for sure paired.
Click to expand...
Click to collapse
Yeah i tried that. I tried unchecking and rechecking. I wish there were more Bluetooth settings

I have the exact same problem on a new Kenwood unit. Funny enough my old Kenwood unit (very similar) didn't do this ever. I've found that turning on my phone Bluetooth after the head unit is turned on always gives me a phone connection only. In that case you have to cycle the head unit power. Turning the phone Bluetooth on and off doesn't fix it. I'm going to reset the head unit and if it doesn't resolve it then Crutchfield will be getting this thing back.