Monitoring BlueTooth connection on a car HU - MTCD Android Head Units Q&A

I am looking for a Widget that will monitor Bluetooth connection to a car's HU, and indicate which (if any) devices are currently connected.
I have managed to find a similar widget for WiFi, that will display the SSID of the network the HU is connected to, and that is most useful.
Now I am looking for a similar Widget for Bluetooth, but so far, have come up empty handed.
HU is OREO (Not Rooted).. The only Bluetooth Widget I have found that displays what is connected is for a much earlier Android OS, and does not seem to work with Oreo 8.0
Can anyone point me in the right direction - or is there some technical reason why this cannot be readily achieved with OREO ??

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[Q] Android 5.0 Bluetooth Visibiltiy

I'm pretty sure I remember this setting being available in the preview versions just like in kitkat, but on the recently released images I cannot find the setting to change the bluetooth visibility setting to never time-out. The pioneer bluetooth stereo in my car absolutely will not recognize the presence of my phone unless it is discoverable.
Am I missing something, or has this option simply been removed.
If it has been removed I'm hoping maybe there is something I can modify to get this option back.
Thank you
xxrzdxx said:
I'm pretty sure I remember this setting being available in the preview versions just like in kitkat, but on the recently released images I cannot find the setting to change the bluetooth visibility setting to never time-out. The pioneer bluetooth stereo in my car absolutely will not recognize the presence of my phone unless it is discoverable.
Am I missing something, or has this option simply been removed.
If it has been removed I'm hoping maybe there is something I can modify to get this option back.
Thank you
Click to expand...
Click to collapse
If you open the bluetooth settings it says, that your device is visible to all devices as long bluetooth is enabled. Only in this screen your bluetooth device is visible to other devices.
I hope google fixes this, because its too confusing.
Yes, unfortunately that's the only reference to bluetooth visibility I have found.
My understanding in 5.0 is that your device's Bluetooth is only visible to paired devices, except when the Bluetooth Settings page is open. When the Bluetooth Settings page is open on your device it will be visible to all nearby Bluetooth devices (which is what you need when pairing). Have you paired the Pioneer Bluetooth stereo with your device?
There no longer appears to be an option as there was on 4.4 to permanently set 'Visible to all nearby Bluetooth devices'. However, why would you want that, other than when setting up pairing? It's a security risk.
xxrzdxx said:
I'm pretty sure I remember this setting being available in the preview versions just like in kitkat, but on the recently released images I cannot find the setting to change the bluetooth visibility setting to never time-out. The pioneer bluetooth stereo in my car absolutely will not recognize the presence of my phone unless it is discoverable.
Am I missing something, or has this option simply been removed.
If it has been removed I'm hoping maybe there is something I can modify to get this option back.
Thank you
Click to expand...
Click to collapse
I'm in your same situation, I was googling around and I found this... I'm on CM12 and wish that we can find a solution for make the bluetooth always discoverable on AOSP roms. I own a Lg G3 and on the stock Android 5.0 rom the option (like in KitKat) it still there!
The only reason I was really looking for this features is that my older Pioneer head-unit in my car (DEH-P9800BT) won't connect automatically to my phone unless the phone is discoverable. I've managed to adapt my other bluetooth connections that were set this way to work without the option, but I've tried for years (since my Palm Treo 650p) to get the head unit to connect automatically with no luck.
I am also wondering why they have hid this feature...
Looks like they are trying to go like (cr)Apple, whereas your iPhone is only discoverable within the Bluetooth menu.

HTC U11 MirrorLink on Subaru Legacy 2017 (Or any HeadUnit)

So I can't seem to get this to work. I downloaded Rock Scout, plugged my U11 in plugged it in, it shows "Use USB for MirrorLink" so I switch to file transfer usb and I get a new notification saying "MirrorLink Active", but my "MirrorLink" icon doesn't activate. I know the Legacy has MirrorLink v1.1, does anybody know if I have to do anything else to make MirrorLink work?
Also has anyone gotten MirrorLink to work on any car HU?
I posted a reply b4 didn't seem to work. To mirror htc u11 to a car head unit.
1. turn head unit on select mirror
2. have phone on a homepage
3. swipe up with three fingers this turns on mirroring.
4. select car entertainment system or whatever comes up on your phone.
That should mirror across it worked for me and my kenwood head unit I just installed.
remember every time you leave mirror to listen to music or directions or anything. to get back to mirroring you need to follow the steps again.
Hope that works for you as I said it worked for me. Good luck Chatto
I checked on cert.mirrorlink.com if your htc has mirrorlink and it is not showing up.
if you go on your phone settings at device connection or network connection (i don't remember exactly) can you see MirrorLink service there?
I think Subaru's mirror link version is not compatible with their crap head unit? I don't know. Yes I see "MirrorLink connection" in the USB connection settings. When plugged in, the phone thinks it's on, it just seems like Subaru's implementation doesn't recognize it, and of course a lot if not all the 2018 Subarus come with Android Auto. Guess they got tired of everyone complaining MirrorLink was foobar'd.
I stopped caring/trying. A bit of a shame actually.
What's the benefit of MirrorLink vs just bluetooth pairing? I just use bluetooth with my Kenwood, though I don't think it supports MirrorLink, and the Subi we have is a 2013, which also doesn't support MirrorLink that I know of, but also has good old bluetooth. Is there some secret i'm out of the loop about, or is it more or less trivial prefrence?
Well mirrorlink could let me use, say Waze on my headunit display instead of buying a mount and mounting my phone. The gist of mirrorlink is basically you can get your phone display on the headunit. But yes bluetooth works.
Anyway for those interested in what I see and the "version" of software on my headunit:
Settings showing mirrorlink active: http://imgur.com/a/cNymR
Notifications saying mirrorlink is on: http://imgur.com/a/TYMfM
my headunit version info: http://imgur.com/a/5cl14
Maybe its a version issue and I need an update, but bottom line is, if Subaru says they have it, and my phone has it, it should work. However judging by the feedback around the internet, it would appear Subaru is at fault here somehow. So shame on them for choosing poor technology and/or having engineers implement it poorly.
Double post. Sorry
seba.olah said:
I checked on cert.mirrorlink.com if your htc has mirrorlink and it is not showing up.
if you go on your phone settings at device connection or network connection (i don't remember exactly) can you see MirrorLink service there?
Click to expand...
Click to collapse
You are correct, I didn't see it on there either. But it's clearly on the device. Check my post above. Maybe it has 1.2 on it and Subaru only supports 1.1. (They had the same issue with 1.0 and 1.1). I sent HTC a question about it so we'll see.

Bluetooth issue in car: Stock ROM vs non-stock ROM

Hi all,
I have a 2008 vehicle in which Bluetooth seems to be a problem depending on which ROM I have installed on the device.
I'm currently on Android 9 OB 7 and Bluetooth connects and stays connected through incoming and outgoing calls. Works flawlessly.
However, with for example Lineage (among others), the Bluetooth pairs, but connection drops soon after or drops after the first call with the car stereo showing "Net Search", meaning the car BT lost service but the phone Bluetooth is still connected. I've tried restarting and resetting network settings but no luck at all. Changing dev options doesn't work either.
I'm thinking it could be a Bluetooth stack difference?
Is there a way to replace the lineage Bluetooth with OOS?
There is no bluetooth.default.so file that I could find
Any help or direction is appreciated.
nickelnine said:
Hi all,
I have a 2008 vehicle in which Bluetooth seems to be a problem depending on which ROM I have installed on the device.
I'm currently on Android 9 OB 7 and Bluetooth connects and stays connected through incoming and outgoing calls. Works flawlessly.
However, with for example Lineage (among others), the Bluetooth pairs, but connection drops soon after or drops after the first call with the car stereo showing "Net Search", meaning the car BT lost service but the phone Bluetooth is still connected. I've tried restarting and resetting network settings but no luck at all. Changing dev options doesn't work either.
I'm thinking it could be a Bluetooth stack difference?
Is there a way to replace the lineage Bluetooth with OOS?
There is no bluetooth.default.so file that I could find
Any help or direction is appreciated.
Click to expand...
Click to collapse
I am having the same issue with 9.0.2 OOS. So not sure if this us a compatibility issue with more than 1-2 years old vehicles or something else? Glad to hear that OB7 is working fine for you. Hope fix is coming soon. It's simply annoying.
I am having car connection issues as well. I have a 2010 Ford Edge. Just moved from Sony Xperia XA1 Ultra on Orea to my first OP device - OP6 Pie 9.0.2 - I can connect to my car initially but once I turn off my car, I have to go through a series of reconnect steps. I called tech support and we spent about 45 min troubleshooting - of course I was told I was the only one who had complained of this issue - anyway no resolution. The only way I can "reconnect" is to go into my car's system settings and select "connect to BT device" then toggle bluetooth off and on in the phone - sometimes this works with the first go, other times I have to repeat this cycle 5 or 6 times. Simply selecting "previously paired devices" in the phone app doesn't work either.
Really a pain in the tush, because I am usually in a hurry and don't have time to go through all this scenario to get a connection.
On the other hand, I have a bluetooth ear piece (made by Samsung that is like 5 or 6 years old) that reconnects every time I turn it on, no problems.
Car connections too but was not present in omni
I found for stock, performing a network reset (mobile, wifi Bluetooth) then restarting the device fixed the Bluetooth connection issue.
For custom non-stock ROMs, for my issue at least, I found its not a Bluetooth issue at all but rather the mobile network drops and the car Bluetooth cannot reconnect. The same network reset as above does not work but what does work is toggle off the "automatically select network" and manually select the mobile network from the menu that pops up. This keeps the mobile network intact (until the next device reboot, at which point repeat the steps) with the car and all is good.
I only figured it out by accident; hope this helps others.

Connection widgets not working

Hey guys,
I'm running Hal9K rom on my Xtrons unit and got it all set up the way i like it but i can't find a widget that tells the bluetooth connection status.
I am lokking for a small widget that tells me if and who's phone is connected.
I downloaded Bluetooth connection widget from the playstore and it's exactly what i was looking for......but it doesn't work both ways.
It works on my phone, tells me it's connected to the head unit, but installed on the head unit it doesn't see it's connected to the phone.

Bluetooth functionality for PX30

I got a XTRONS Android 9 PX30 RK3326 MTCE. I'm wondering if there are any ROMs that would work like the Hal9k or Maliysk ROM for instance, that would enable better bluetooth functionality. I am fully able to use the OBD2 TORQUE with Bluetooth (with connection issues after a soft-reboot or going to sleep). I want to also use an RGB controller app to control Bluetooth Rock Lights. However when doing so I cannot find the device no matter what. I am not sure if it is just software (I would assume) that disables this function considering Torque works perfectly and connects to the OBD2. Any feedback would be helpful. I just do not understand (expect software wise) why an RGB app cannot connect to a device but TORQUE can.

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