Multiple Bluetooth connections? - Xiaomi Mi Mix 3 Questions & Answers

So, I bought myself a smartwatch and I was happy, but not for long. The moment I sat in my car I realized my phone (now being connected to the smartwatch via Bluetooth) doesn't connect to my car.
Is there any way of making it connect to both devices at the same time?
I tried going to developer options and to enable more devices but it already shows two by default and it's grayed out so I cannot change this setting.
Any help would be appreciated.

it would be strange if it couldnt.. you can connect to many devices. a have a smartwatch too and have no problems

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[Q] Tethering / driver problem N5 vs Win 8

Hi all
I've had my N5 a couple of weeks now, and it's working nicely, except for getting bluetooth and USB tethering to work smoothly. I wonder if anyone has any suggestions?
I can connect the phone to my laptop via USB (I'm running W8 x64, for my sins), and use MTP and PTP without a problem. Selecting USB tethering results in the phone saying "tethered", but nothing appearing in the list of network adapters.
I can pair the phone with the laptop, but the only services that seem to be offered are file-transfer and audio stuff.
If I enable USB debugging, the network shows on the laptop, and seems to work OK for a while. Sometimes the phone wants to reboot while doing this (typically after a couple of minutes).
Interestingly, Device Manager shows the phone as a Nexus 5 under the 'Other Devices' category only when USB debugging is enabled, otherwise it displays as 'ADB Device' only if 'PTP' is selected, and the phone is absent when 'MTP' is selected.
I'm guessing that this is a driver issue of some sort (I hate Windows), and have had a go at installing the LG United driver, to no avail. Any pointers gratefully received.
Cheers
Charlie
I'm having issues tethering with Windows 8, both wifi hotspot and USB tethering. I can connect and it will show up as internet connected then just die. Connection even goes on my phone.
However when USB tethering with OS X all I had to do was download a package from here http://joshuawise.com/horndis, after that it pops up straight away and I don't have any problems. Can tether for ages no problems.
Will probably try a custom rom soon see if it is to do with the Nexus 5 stock rom.
Hi Charlie,
I'm having the very same problem. With my Galaxy S3, I would tether (via BT, as it was a fast connection that didn't drain my battery like WiFi hotspot!) all day long with a Win8 ultrabook. Worked brilliantly!
Just picked up a Nexus 5 last night. My Nexus 7 tablet can use the phone's internet no problem, but my Win8 machine gives no such options. All I have is a "direct connection" service visible to the laptop, I suppose for file sharing.
Has anyone made any progress on this issue at all? It seems that the problem lies with Windows8. It boggles my mind why the Nexus 5's BT tethering implementation is so different than the GS3's...
Progress report: it seems I have tethering over BT working!
I've tried a bunch of different things... the challenge now, is to figure out what it was that worked...
I would try this first: remove the Bluetooth pairing between your PC and your Nexus 5. Ensure that "Bluetooth Tethering" is indeed checked in "Tethering and Portable Hotspot" menu (under Android settings) BEFORE pairing. That might be what I did wrong, in fact.
I restarted my PC, and voila, when right-clicking on the phone pairing on my PC, under the "Connect" menu, suddenly there's an "Access Point" service visible.
I'm pretty confident the above might fix you up.
[PS: If not, the only other thing I did differently when I first tried, was I paired the phone through Win8's buried bluetooth devices menu (avoiding the alternative MetroUI interface at all costs, as I normally do). I don't see any reason why using either UI should provide different results, but hey.]

Bluetooth device reconnect issues

running bone stock - successfully paired and used two different sets of headphones, but after powering off, or turning off bt, the devices will not auto-reconnect (or manually reconnect, for that matter). The previously paired devices show in the list...but do not connect when turned on. When I select the name to manually reconnect, its says connecting, briefly, then fails to connect. Only way to re-establish connection is to put the headphones in pairing mode, remove the device, and add as new again.
These headphones (both sets) always reconnected without a hitch on my previous phones? Looking through the forum, looks like an uncommon issue.

Android Auto on Galaxy S7 not working with Pioneer AVH-X8700BT

i have a Pioneer AVH-X8700BT and it is both IOS Auto & Android Auto compatible.
Problem is it works fine with an iphone 6s but when i tried it with my new samsung galaxy s7 nothing works!
i tried using both Android Auto and the Mirrolink mode but both nothing.
Tried restarting both car device and phone but nothing.
Also tried with a samsung galaxy s6 and also nothing.
Any ideas?
Same issue here.
My S7 won't connect via Android Auto either. (VW Golf)
Do you have a setting inside the radio for pairing? At least with my radio you have to activate pairing to see the radio
Had the same problem with my S7 Edge from Verizon with my Pioneer 8100NEX. Finally figured out that I have to change the USB options to get it work. After you connect the USB cable, pull down the notification drawer and look for "Connected for charging" notification". Tap that and change "Use USB for" to "Transferring media files". Android Auto worked after that for me.
I didn't have to do this with my S4. Unfortunately for the S7 I have to do this every time I connect my phone. I found this thread because I'm looking for a way to make it the default but haven't had any luck yet.
I had the same problem. Thanks for posting this. Now I also am looking to set the default functionality. Crazy to have to manually switch this every time.
Thanks,
kt
marshmallow problem
[email protected] said:
I had the same problem. Thanks for posting this. Now I also am looking to set the default functionality. Crazy to have to manually switch this every time.
Thanks,
kt
Click to expand...
Click to collapse
If this works for you to connect - the default functionality can be found under developer options. You can manually force charging, MTP etc there. USB debugging - off / USB configuration - MTP
This is a known official marshmallow issue not isolated to GS7 , LGG5 has same issue listed in google support page. some devices (like my GS7) will not connect after switching USB connection options. I have tried every mode and mine will not work - need a more advanced workaround. I also can't root phone because of corporate network restrictions.
Anyone have an update on this? I have the same issue using Galaxy S6 Edge Plus. I've enabled the developer options and enabled USB Debugging and MTP for the USB connection type with no success. I also can't change options with the connection type in the notification panel.
S-P-R-O-U-T said:
Anyone have an update on this? I have the same issue using Galaxy S6 Edge Plus. I've enabled the developer options and enabled USB Debugging and MTP for the USB connection type with no success. I also can't change options with the connection type in the notification panel.
Click to expand...
Click to collapse
My S7 Edge Duos seemed to require the disabling of Car Mode as it was interfering with AA's connection. It's a default Samsung piece of unneeded. You can download "Package Disabler Pro for Samsung" from the Playstore. It will allow you to disable apks and stubs without root. I disabled Car Mode and now AA works with the Pioneer 8100 I have. the S7 worked fine with the wife's '16 Accord and AA which was my sticking point. I guess the Pioneers support Car Mode and Mirrorlink so it confuses the hell out of the deck. It's worth the 0.99 cents to see if this works for you. You can also disable all the other bloatware you don't want with it. So it's kind of a win/win for a buck.
Hi I have a Pioneer AVH X8890bt and I want to connect my s6 edge to appradio, however, everytime i plug my phone to the usb it gets connected to android auto, Could anyone guide me as to how to establish a connection. Also, there is a HDMI port at the back of my system and I have learnt that to connect a samsung device you need miracast dongle, so if I buy a dongle will i be able to use the touch function of my car audio or everytime I will have to be dependent on my phone. Please advice.

Gear S3 Frontier and Nexus 6p connection problems

Hi all,
I'm growing increasingly frustrated with this watch because of connection issues.
When I received this watch in January, I was able to set it up no problem. Everything worked great. I just had two issues-
1. The Bluetooth car system would no longer work because the phone would use the watch as the default headset.
2. Google duo would go bonkers when I was getting a call if the watch was connected.
Both of these issues were solved with a solution found here in the forums-by unchecking the option to use the watch for phone connection.
I noticed immediately after doing that that the connection became unstable. I would disconnect randomly then reconnect. As the weeks went on the disconnections became more frequent i.e. Every 2-3 minutes. Then the watch wouldn't connect anymore. Once the watch wouldn't connect anymore neither would my car. Nothing related to Bluetooth would work on my phone. My Tiles wouldn't connect anymore either.
So I went through and deleted all data and cache related to the three Samsung apps and uninstalled the apps. I deleted all Bluetooth connections. Then reinstalled the apps and connected the watch. Within an hour I was still in the same situation. (With no other things connected to Bluetooth.)
I figured out that if I restart my phone everything works again for about 20-30 minutes.
I'm at the point where I don't feel like it is worth keeping anymore. I can't have anything else connected to Bluetooth and I have to restart the phone so often that it just doesn't make sense.
After reading through the forums here it doesn't sound like this is a common problem. Is there something I am missing? Is the watch defective? Any suggestions is greatly appreciated.
Thank you.
You could well find the issue is with your phone and not the watch. I initially used my S3 with a Samsung phone that went bust. I went back to my Nexus 5 and found I had some issues and one app had disappeared from the app store. I contacted the app firm who told me that they were aware of it but it was Samsung that was blocking the app. On going back to a Samsung phone the app was available again and works fine. Can you check your S3 with a different phone?
I also have a S3 and a 6P. Disconnect the S3 Bluetooth from your phone Bluetooth settings and it should connect to your car. You should still see the "Gear S Plugin" notification if you swipe down on the the phone. You should still receive notifications on your phone but the Bluetooth will connect to your car. Connect the S3 to your phones Bluetooth again if you want to answer calls via your watch. Hope this helps.
I have the Mate 9 and the Frontier... when i enter my truck i just press airplan mode on the watch turning off all connection. bluetooth from phone to truck connects 1-2-3....
Clarification
Hi all,
Thanks for the responses. Probably because of my long rambling post there is a little misunderstanding of where I'm at now.
Right now my problem is that my phone can't stay connected to my watch. I have nothing else connected via Bluetooth to my phone. Once it can't connect anymore, I have to restart my phone in order for it to connect again. And then it only stay connected for a couple of minutes before disconnecting.
It is like the Bluetooth gets locked up on my phone by the Samsung gear apps.
Maybe it's my phone. Maybe time to get a Pixel.
Any suggestions are greatly appreciated.
Try this. I do it when I lose notifications. Go to Bluetooth on your phone. "forget your watch" it will disconnect. Reboot phone. Then re pair watch and phone after reboot using your phone and the watch (not the gear app). That usually fixes most problems for me.
Sent from my ONEPLUS A3000 using Tapatalk

Question Bluetooth connectivity issues

I have been experiencing issues connecting to devices over Bluetooth. Sometimes it just works, other times it doesn't work at all, and some times it kinda works but not right.
All of these issues are resolved by restarting the phone, but that isn't a solution because the issue comes back.
3 Devices I have been having issues with
1. S Pen - Sometimes it won't connect to the phone, I get an "S-Pen Missing" message and it will not connect. If I t ry to connect to it manually via nRF Connect (The Nordic Semiconductors Bluetooth App) it tells me that the BLE device has a GATT error. It happens semi-randomly but I can always make it happen by doing #2
2. Car Stereo - This is the weird one, it will connect and play music, but it will not do "calls" if I connect to Discord it won't recognise the car as a Bluetooth device it can route to.
3. Raspberry Pi - This one it appears it will connect to ONCE, and then after a disconnect it will not connect again.
Again, each of these can be fixed by restarting the device, but they happen again after a while. The pen & RPi use BLE, I don't know what the car uses for calls.
Turn off global power management completely in Device Care.
Network reset, reboot and clear system cache from the boot menu.
Ok, I've done a network reset, and cleared the cache partition. I checked Device Care for something like global power management, and I couldn't find anything. Most of the pwm settings are off except the "optomise daily" setting.
I'll let you know later if I have the same issue again.
These, this is a N10+ running on Pie.
To check if you have disabled global power go to Developer options>standby apps, all buckets should show as active otherwise power management is enable.
KindarConrath said:
I have been experiencing issues connecting to devices over Bluetooth. Sometimes it just works, other times it doesn't work at all, and some times it kinda works but not right.
All of these issues are resolved by restarting the phone, but that isn't a solution because the issue comes back.
3 Devices I have been having issues with
1. S Pen - Sometimes it won't connect to the phone, I get an "S-Pen Missing" message and it will not connect. If I t ry to connect to it manually via nRF Connect (The Nordic Semiconductors Bluetooth App) it tells me that the BLE device has a GATT error. It happens semi-randomly but I can always make it happen by doing #2
2. Car Stereo - This is the weird one, it will connect and play music, but it will not do "calls" if I connect to Discord it won't recognise the car as a Bluetooth device it can route to.
3. Raspberry Pi - This one it appears it will connect to ONCE, and then after a disconnect it will not connect again.
Again, each of these can be fixed by restarting the device, but they happen again after a while. The pen & RPi use BLE, I don't know what the car uses for calls.
Click to expand...
Click to collapse
Are those the only three devices you connect via BT? What other apps do you use that need to use BT (i.e. Galaxy Wear, Apple Music, etc.).
You mentioned "Nordic Semiconductors Bluetooth App." I looked it up. Why do you need a third party generic BLE connecting app? It seems to me that could be the problem. You shouldn't need a third-party app to connect your BLE devices. The S22U's native pairing will work with any BT device that adheres to BT standards.
Try uninstalling the nRF Connect app and see what happens.
The only other Bluetooth devices I have are other in-house hardware, running on SiliconLabs BGM13P chips or NRF52840 chips...
The NRF app isn't a replacement for your bluetooth pairing app, its a debugging app... it can connect to BLE devices and show their GATT profiles, update devices that have Nordic's OTA update code and copy a devices GATT profile to act as a BLE Server.
We use it for testing and debugging.
KindarConrath said:
The only other Bluetooth devices I have are other in-house hardware, running on SiliconLabs BGM13P chips or NRF52840 chips...
The NRF app isn't a replacement for your bluetooth pairing app, its a debugging app... it can connect to BLE devices and show their GATT profiles, update devices that have Nordic's OTA update code and copy a devices GATT profile to act as a BLE Server.
We use it for testing and debugging.
Click to expand...
Click to collapse
Ok. I recommend uninstalling nRF Connect anyway. If anything, to rule out the app. How old is your car and the Raspberry Pi? Even though BT 5.2 is backwards compatible, sometimes older BT devices won't work with newer devices. That doesn't account for the S Pen issue though.
I uninstalled nRF connect, and changed all the settings you both recommended. Exactly the same behaviour when I went to leave work. My car stereo would do music but not calls, then when I restarted my phone, it worked. Then when I got home, my S Pen would not connect to my phone, then I restarted my phone and it worked.
Its not a problem of not being compatible, its a problem of something stops working.
Please also note that these devices worked fine together in the past. I am concered that it is either a change made by an update or a Bluetooth chip that is faulty....
OP- Have you debloated at all and if so maybe you've removed something relevant that might be causing these issues?
No, stock image, no OS modification beyond the things that Samsung offers (GoodLock and Stock customisation)
I have our in-house apps for interacting with our equipment (over Bluetooth) installed, but #1 they shouldn't affect anything if they are not open and #2 they don't do this to ANY of our other test equipment.
I would just like to say, that I appreciate the assistance that you are all offering! I have used many forums over the years when looking for support on things and I rarely find a place that is more ready to try and help than XDA forums!
KindarConrath said:
I have been experiencing issues connecting to devices over Bluetooth. Sometimes it just works, other times it doesn't work at all, and some times it kinda works but not right.
All of these issues are resolved by restarting the phone, but that isn't a solution because the issue comes back.
3 Devices I have been having issues with
1. S Pen - Sometimes it won't connect to the phone, I get an "S-Pen Missing" message and it will not connect. If I t ry to connect to it manually via nRF Connect (The Nordic Semiconductors Bluetooth App) it tells me that the BLE device has a GATT error. It happens semi-randomly but I can always make it happen by doing #2
2. Car Stereo - This is the weird one, it will connect and play music, but it will not do "calls" if I connect to Discord it won't recognise the car as a Bluetooth device it can route to.
3. Raspberry Pi - This one it appears it will connect to ONCE, and then after a disconnect it will not connect again.
Again, each of these can be fixed by restarting the device, but they happen again after a while. The pen & RPi use BLE, I don't know what the car uses for calls.
Click to expand...
Click to collapse
I've seen the issue of the spen disconnecting but only a couple of times and the issue worked itself out within a couple of minutes with me not having to do anything.
I've also have had a couple of wonky issues when connecting a new Samsung phone to my car. I've narrowed down my issue to the fact that when I transfer my data & settings via Samsung smart switch, it includes the details of my Bluetooth pairings. To fix it, I have to go in and delete my Bluetooth phone settings from the car and from my phone and re-pair them.
Rubby1025 said:
I've seen the issue of the spen disconnecting but only a couple of times and the issue worked itself out within a couple of minutes with me not having to do anything.
I've also have had a couple of wonky issues when connecting a new Samsung phone to my car. I've narrowed down my issue to the fact that when I transfer my data & settings via Samsung smart switch, it includes the details of my Bluetooth pairings. To fix it, I have to go in and delete my Bluetooth phone settings from the car and from my phone and re-pair them.
Click to expand...
Click to collapse
As cool as I think Smart-Switch is as a program, I actually never use it when moving from one phone to another. The junk that Google drags with me from one phone to the next is already too much, I like to use a new device as a chance to do some housecleaning. So no old-data oddities here.
KindarConrath said:
I uninstalled nRF connect, and changed all the settings you both recommended. Exactly the same behaviour when I went to leave work. My car stereo would do music but not calls, then when I restarted my phone, it worked. Then when I got home, my S Pen would not connect to my phone, then I restarted my phone and it worked.
Its not a problem of not being compatible, its a problem of something stops working.
Please also note that these devices worked fine together in the past. I am concered that it is either a change made by an update or a Bluetooth chip that is faulty....
Click to expand...
Click to collapse
Hmmm.. Ok. You're probably right about the suspect causes. I know there is a code you can dial to get into diagnostic mode, I just don't know what it is.
The only other option you can try (as a last resort) is to factory reset it. If it is update caused, a factory reset MAY fix it. If you take it to a service center, send it in for repairs, or do a warranty replacement, they're going to factory reset it, or have you reset it.
have you tried running diagnostics in device care ?
or check with this dc
android
Bluetooth test*#*#232331#*#*
samsung
Bluetooth Test Mode*#232331#
I still haven't done a factory reset, but I continue to have the issue.
I have run the BT Test in device care, it always reports good.
I tried the codes, neither of them work as the first one is for vanilla android and the second is for older versions of Samsung firmware.
I've tried completely unpairing from the car radio and re-pairing, disconnecting and connecting from the other device to no avail.
KindarConrath said:
I still haven't done a factory reset, but I continue to have the issue.
I have run the BT Test in device care, it always reports good.
I tried the codes, neither of them work as the first one is for vanilla android and the second is for older versions of Samsung firmware.
I've tried completely unpairing from the car radio and re-pairing, disconnecting and connecting from the other device to no avail.
Click to expand...
Click to collapse
I'm not entirely sold on the idea that it is a hardware fault. It could be a hardware limitation; meaning you cannot connect to more than a certain number of devices simultaneously. I don't know how many BT devices you can connect to at once. I know at least two simultaneous connections (I've only had two simultaneous connections at a time).
You said you have other BT devices in your house other than those three your having issues with. How many are there? How many are you connected to at any given moment?
Is it possible that you have too many simultaneous connections?
When you try to connect to your car.. Did you check under BT connection (your vehicle) to make sure both audio and calls are checked..
doubledragon5 said:
When you try to connect to your car.. Did you check under BT connection (your vehicle) to make sure both audio and calls are checked..
Click to expand...
Click to collapse
Yes, and I've disconnected, reconnected and even unpaired and re-paired the phone to the car.
gernerttl said:
I'm not entirely sold on the idea that it is a hardware fault. It could be a hardware limitation; meaning you cannot connect to more than a certain number of devices simultaneously. I don't know how many BT devices you can connect to at once. I know at least two simultaneous connections (I've only had two simultaneous connections at a time).
You said you have other BT devices in your house other than those three your having issues with. How many are there? How many are you connected to at any given moment?
Is it possible that you have too many simultaneous connections?
Click to expand...
Click to collapse
Unless having multiple connections causes the BT to fail completely, no. Even after turning the car off and walking away, it still will not connect to the S Pen. The only BT devices I use with that phone regularly are:
S Pen, Car (Music & Calls)
At work I develop devices that use Bluetooth and I sometimes connect to them, but only ever one at a time.

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