yashsingh1/xdaforums huggingface dataset:
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] BarryH_GEG:
Kind of simple really. BT's been broken in AOSP since 4.2.

Bluetooth Is Basically Broken

Known affected devices: Nexus 10, Nexus 7, Galaxy Nexus.

Documented? Android bugs [1] [2], XDA [1] [2], Google+.

We've already received numerous emails about this issue, and I've confirmed it myself: Bluetooth on everything but the Nexus 4 (apparently) is in an absolutely sorry state right now. Audio streams extremely choppily, sounds mediocre, and often loses connectivity entirely. 3rd party Bluetooth apps that create compatibility with devices like the Sixaxis or Wii controllers no longer function at all, and throw an error instead.

This is bad. This is the kind of thing that makes someone return a phone or tablet, because A.) people have no patience for stuff like this, and B.) there's zero reason something as simple as Bluetooth should be broken so badly out of the box. Google needs to mark this one "critical" and fix it ASAP.

http://www.androidpolice.com/2012/1...major-issues-plaguing-googles-newest-release/​

Samsung's 4.2 devices weren't affected which means they had to be using either their own BT s/w or made major modifications to BT in AOSP. As for a "short list," how do we know it's of "working" peripheral's vs. "broken" peripheral's? I've only seen about a half-dozen BT connectivity complaints and really wasn't aware of the problem until it was pointed out to me in another thread. In my case I have about six BT devices I use regularly including speakers, headphones, mice, and keyboards and if asked I'd say they work better on the N10.1-14 then they did on the N10.1-12. I'd define "better" as connecting faster automatically, staying connected, and playing well with others when multiple BT devices are connected. To your point, I could be the anomaly but as posted in this and other threads disabling the onscreen keyboard and checking for conflicting s/w seems to have helped some people so it wouldn't appear BT issues are that widespread (yet).
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] dpersuhn:
I agree that the onscreen keyboard adds much to the frustration, as it's default behavior mimics the problems folks have been reporting on other 4.3 devices. Most of what I've come across cites keyboard issues that many have experienced immediately after upgrading to 4.3, but that doesn't really meet the requirements of being evidence either. I suppose the only real way to know would be to grab the base android build that Sammy used and compare files.

As for compatibility issues beyond keyboard input, I can't really speak to that, as I only have a few audio devices and one gamepad. It isn't really a large enough sampling to suggest that the entire stack is hosed up. My issues have been entirely related to BT keyboards, so I'm more focused on that.

You mention conflicting software, which brings up a question. Since the BT stack would be considered part of the protected core OS, apps would require root to mess with it, wouldn't they? The six axis app being a good example, as it requires root. To hook the BT stack at a low enough level to add profiles or override existing ones for compatibility isn't something that should be possible with a user level app. I could be off base here and the reports of user apps affecting BT are an interesting coincidence, but I'm not sure I can quite see where the two cross paths. The alternative is surely more concerning, as it would imply that core OS functions in this tablet are somehow exposed to being overridden by user space apps.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] BarryH_GEG:
Great post and it touches on one of Android's key weaknesses. "Core" like everything else is nothing but a guideline. OEMs like Samsung and app developers color outside the lines all the time for their own benefit. In Samsung's case it was beneficial because BT in 4.2 was a mess and based on your findings still is so Samsung's meddling helped their audience. Android's kind of like the wild wild West in that regard. Add to that something like BT which itself is kind of like the wild wild West with frequent complaints about incompatibility between devices and you end up with the situation we're discussing. In every phone forum I've seen there's always multiple threads on "can't connect to my [insert brand of car]'s BT system." If the phone and car's BT implementation followed prescribed standards that wouldn't be the case. But who knows who's fault it is - the device OEM or the car manufacturer.

Here's another thing to consider about Samsung devices. ROMs from different regions with the same build and change list number released within days or weeks of each other can have different versions of included apps and s/w. As an example, some users on the N10.1-12 forum couldn't import PDFs in to S Note while the majority could. Those that could successfully imported the same PDFs that those that couldn't were having issues with. With some sleuthing we discovered there were almost a dozen different versions of S Note and that two had the PDF issue. And that was with the N10.1-12 being out for about three months. I'm on a Latin American SM-601 so there's the possibility that my BT might be different from U.S. (and possibly other region) SM-600's.

You might want to try a Samsung BT keyboard that you can return if you want to see if the BT issue is pervasive. If Samsung's KB works then you'll know that BT isn't totally borked and that perhaps updates might correct incompatibility issues with other keyboards.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] dpersuhn:
The OEM customizations necessary to fit android to a particular platform is a necessary part of enabling the OS on vendor specific hardware platforms. I get that part, but replacing the entire stack instead of just creating the kernel driver component would definitely be an aggressive move. If this is the case, I would really be surprised that apps outside of the ones Samsung has written or bundled would be able to interfere with it. Maybe I'm giving samsung too much credit by assuming that they would leave the baseline android security model intact, but to deviate from it that badly is asking for a major vulnerability trainwreck. The inclusion of Knox (I won't get started on that in this thread) would imply that they are trying to prevent such a thing.

I obviously don't have the details necessary to speak decisively about what Samsng May or may not have done, but if what you say is correct and they have inserted some other BT stack, KitKat may not help us either. The stock BT stack in it adds support for HID over GATT (HOGP), enabling A number of BT 4.0 LE devices that currently won't work (MS Arc Touch for Surface Pro, for example). I'm hoping we might see an update to 4.4 in Q1 '14, so it'll be interesting to see how an updated release affects BT functionality.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] matsuru:
Anyone try the app external keyboard helper?
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] LaRoach:
I gave the free version a shot but it didn't work. I tried some of the steps listed for Samsumg devices as well but no go...
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] eddlum25:
I tried it as well with no luck. Bluetooth keyboard connection is very intermittent. Connection still broken while typing.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] ChrisNee1988:
I have a logitech k810 bluetooth keyboard and have no issues with disconnects, whatsoever. Maybe its a problem with the keyboards trying to conserve energy?
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Action B:
Could you describe your device details?

I'm having this problem with logitech k810 keyboard and android mouse. I have the pro version of the keyboard helper and it has no effect.

Here is a video of the issue = http://youtu.be/WlCgFQ0cAO0

It is much worse with the keyboard than the mouse. My Note 3 running android 4.3 has no issue with galaxy gear, keyboard, mouse and allshare cast all connected at once. I expected the same out of this tablet. I may be returning this tablet, I do not find this acceptable.

My device is a 32GB white SM-p600 USA version.

BT problem exists at initial boot, and was tested after each incremental firmware update to still be present.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] ChrisNee1988:
I saw your video (nice nicknames for mouse and note btw). I have the USA p600 16GB wifi only - white. I don't have a bluetooth mouse so I can't try that but it seems to work flawlessly with my K810 keyboard with my limited trials. I haven't done any extensive like write a paper but i've done some messaging and emails. Also i've only tried it with the latest firmware. I'd recommend doing a factory reset, and if that doesn't fix it, maybe exchange it for another unit.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] BarryH_GEG:
Since there's no possible s/w conflicts and I'm assuming you disabled the onscreen keyboard during your testing it might be the keyboard itself. If your keyboard is older/newer than [MENTION=3133381]ChrisNee1988[/MENTION]'s it might have a different chip or f/w in it. Peripherals aren't built to exacting standards whereas it's unlikely for there to be h/w differences between two SM-600's built so close together.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Action B:
The keyboard works great on my note 3 so it's fine.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Barsky:
The first unit I got from Amazon (one of their: You buy new, we send an opened, returned one). It had bt kb disconnects. Got better after the update to mk1 but still happened. The new, unopened replacement I got yesterday seems to be good. I haven't been having any BT kb disconnects. The same cheap Motorola by kb I've used on my original note 10.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Action B:
Are you in US and is it 16GB and 32GB, is it the wifi model? What color?
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Barsky:
US. 16gb.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Action B:
Thanks, I have 32 GB model I intend on either returning or replacing my unit today. I'd prefer to use my Note 10.1 2012 for now.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Barsky:
TBH, I am considering returning it altogether and sticking with my Note 10 original.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Action B:
I thought you said the new one seemed to be good, is that still true?
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Barsky:
This one has the yellowish tinted screen. Noticed it immediately. Put it next to my original note and it is ridiculous :)
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Albertotuchi:
Another one here with BT problems with , keyboard. I have a Logitech K760, working rigth now perfect with my Note10 2012, but imposible with the 2014. Any time you stop using the keyboard more than 5 seconds it disconects. And then after touching any key it reconects. But this doesnt happen with the 2012. And it has nothing to do with battery because I have both tablets together, change the channel of the keyboard and one works and the other not.

If i keep writing fast using the keyboard its doesnt disconect, I stop writing a few seconds and disconects. Very strange this issue of disconnecting because of inactivity.

And I havent noticed other problems connecting to de S4 or my PC blutooth for transfering files.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Action B:
It also appears to work fine with JUST a mouse, but put the mouse and keyboard together and disaster because the mouse will disconnect at the same rate as the keyboard.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] BarryH_GEG:
Sounds like some type of radio interference for the KB to affect the mouse that works fine by itself. Have you tested with Wi-Fi off or connected to 5GHz vs. 2.4GHz?
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Action B:
Yes I tried all of those things, I'm thinking it's causing an error or something in the driver.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] omneity:
I can't get my Motorola Bluetooth & Keyboard to connect at all, in fact they're not even seen by the Note 2014, they both worked OK with the original Note 10.1.

I've just tried my Logitech K400r keyboard/touchpad combo using a cheap Micro USB OTG adapter and that works great - almost perfectly, even the localisations are recognised correctly. The only thing is the hash key does not produce the hash symbol, but rather the backslash symbol, the keyboard blackslash key also produces a backslash so it's not a mapping issue.

Edit: I've just reset my Motorola keyboard to factory (press the keys N, E, & W whilst powering on) and it now pairs to the Note 2014 as does the mouse (both have separate Bluetooth addresses), but the keyboard soon gives up. I notice the hash key issue also happens the same with the bluetooth keyboard so perhaps there is a mapping issue.

I'll have another play when I have more time.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] BarryH_GEG:
Out of curiosity, has anyone using a non-U.S. N10.1-14 had any BT keyboard drop-out issues?
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Action B:
Exactly my question. I'm considering flashing another countries firmware.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Ryangan:
I bought my Note 10.1 2014 (WiFi only, 32GB) from the US and have flashed UK firmware. Still suffering from issues with my Bluetooth keyboard just as I did before (although I changed the firmware for other reasons). Even if I do not have a keyboard connected, but Bluetooth is on, I've noticed that my WiFi will randomly stop functioning properly; only the upstream connection works. The only way to fix this is a restart. Bluetooth is a mess on this at the moment.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] BarryH_GEG:
There's nothing earthshattering about the BT radio in the N10.1-14 and most likely it's the same one (Broadcom) used in the Exynos N3. I haven't seen chip production issues facing BT or combo radio performance in years. So if it's h/w I'm guessing it has something to do with the antenna connection and how it's installed during production. If non-U.S. and U.S. devices are occasionally having issues it's not likely a s/w problem. And if the BT problem still exists when Wi-Fi's disconnected it's not radio interference possibly caused by certain routers or the proximity of outside devices. Again, in 2013, BT isn't cutting edge h/w that would suddenly see production problems in the chips themselves.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] BarryH_GEG:
There's an issue with SD cards on Samsung's newer devices where, especially after an update, the system status is randomly changed to "custom;" even using an official OTA update. Pulling the SD card and rebooting the device (possibly twice) seems to correct the issue. Whatever causes it may have other affects also. There are also issues with the SD card occasionally being corrupted. Your situation may have been caused by SD card issues and not the intermittent BT issue (if you're still experiencing it).

Based on the posts below it looks like a h/w issue on certain individual devices. And one that may only affect U.S. N10.1-14s.

U.S. users who flashed a UK ROM still had the problem while their haven't been any UK users using the same ROM reporting it (yet).

People in the U.S. using the same brand and model of keyboard get different results on the same h/w (SM-P600 across all three s/w versions deployed).

It happens with Wi-Fi on and off (meaning it's most likely not radio interference).

A user had the problem on a device s/he returned and didn't have it using the same exact environment with its replacement.

I'm just guessing like everyone else here but there's really not enough proven yet to specifically confirm or refute a cause.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Action B:
Returned my 32 GB white model. While i was in the store one display model (16GB) worked with my keyboard fine, the other (also 16GB) did not, presenting with the same symptoms as my returned tablet.

I gave a shot at one more 32GB unit and it works perfect now. Bluetooth is solid with my k810 keyboard and mouse, my 32GB sdcard works fine, no issues.

So in short summary:

my original tablet had the issue out of the box and on all version of US firmware

My new tablet does not have any issues out of the box and on any version of the US firmware
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] GeorgeP:
This issue is not new to the Galaxy Note 10.1 (2014). It was a fairly well documented problem with the Galaxy S3 and Galaxy S4. It happens all the time with my Galaxy S4. Actually, from my experience it seems mostly fixed with this tablet. There is routine, sysscope, that is run at startup time. This routine scans for evidence that the system was modified and retuns a code of "custom" if it finds that evidence. It has a bit of a hair trigger and often returns false positives. I'm not sure exactly what triggers it, but I've read that if you have an SD cards that was previously on a rooted device, their may be some remnants that could trigger a custom status. l've also ready that some 64GB cards could trigger it.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] inolvidable:
I own a 16GB Black from Germany and I have this issue with the Logitech K810, which

works flawlessly in any other device I have ever paired it with in the same environment (Pc, Note 3, Galaxy S3, S4 and IPad 3).

On the other hand this Note 10.1 2014 is the only one of the above mentioned that shows no significant wifi performance drop after being paired with my Bluetooth speakers.

iiSo say we all!! from my SM- P600
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] BarryH_GEG:
Since people have posted multiple times that devices they've received on an exchange work in the identical environment the device they returned doesn't you can assume it's h/w. I'd guess either a fault in the antenna or the way it's installed during production.

Has anyone had a BT issue with a SM-P601/5? Because of the cellular radio the antenna configuration would be different.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] GeorgeP:
FWIW, earlier I asked Samsung tech support on their technical support chat line: "I have the samsung galaxy note 10.1 (2014) tablet. Does this tablet work with bluetooth keyboards?"

Their response was: "I have searched for the information. However this tablet is not compatible with bluetooth keyboards."

That said, I have found that most of the time it works pretty well with the Samsung BT keyboard. But there are times when it won't stay connected. At first I thought I had found a pattern, but now it seems random.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] earthtk:
I'm using a P605 and I'm facing random bluetooth disconnection. It not only applies to my keyboard but also to my mouse.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] quser1:
Well, Last week I purchased a US P600 and out of the box could not stay connected to 3 of my bluetooth keyboards. I contacted Samsung and they finger pointed. As with another post I saw a person said they exchanged theirs for a new one to fix the problem without going the root way. I returned mine today because of this and got a better deal with Cyber Monday from Bestbuy and the new one works fine same model and firmware version, so Samsung has issues and they refuse to admit it when cornered on their support site. Glad my new one works because I sure needed multi window and spen for what I do. Stinks they have no fix.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Action B:
Mine actually still disconnects after around 15 seconds often but it's a ton better than my last unit which was every five seconds. The bluetooth keep alive app fixed the second tablet issue but did not work on the first. Samsung is avoiding responsibility here I'm sure. I'm betting once they release the official keyboard it will be fixed because they will be required to make sure it works.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Albertotuchi:
This BT Issue starting to be a X File. My tablet is from Spain, and now I have a German official ROM and having the BT Keyboard disconnection. I have a SanDisk Class 10 SD. I took the SD Card out of the tablet, then reboot without the SD Card and now the Bluetooth works fine without any disconnection.I placed the SD card again and rebooted and the keyboard still working fine without any disconnection :eek:

Cant understand it!!!

Enviado desde mi SM-P605 usando Tapatalk 4
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] earthtk:
By samsung:

You may wish to try updating the firmware of your phone. If after updating software and the issue still persistent, please check with dealer of the Bluetooth keyboard if that accessory is compatible with our firmware. We are sorry to inform you that cannot guarantee the compatibility of non Samsung products with our phones, which is why a minute amount of third party accessories would lose compatibility with our products after a firmware update.

That's their commitment to their customers.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] BarryH_GEG:
It's a pretty valid statement. It's in every manufacturer's BT device manual. You can't go to a forum on XDA where there aren't posts saying "can't connect to "X" device" or "can't pair with my "X car." It seems pretty clear that there are some N10.1-14's that have a h/w problem that's screwing up Wi-Fi and/or BT. This isn't a high-volume device so it'll take a while (if ever) for Samsung to get enough reports to identify it as a h/w problem. Until then the minimum wage, most likely third-party, CSR's that reply to calls, e-mails, and chats will keep reading off the scripts put in front of them.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] earthtk:
Probably it might just be the badly coded TouchWiz system that made everything so problematic. Custom rom in future might solve it I hope!
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] internetpilot:
I've been using my rather ancient Palm bluetooth keyboard with all of my Android devices since back when I first switched from Palm to Android. Works like a charm, even with this tablet. Maybe it's the newer keyboards that aren't compatible more than it being Google or Samsung's fault.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] Finalform:
I just bought a Belkin F5L113tt (the ipad version, since it was heavily discounted)

and it works flawlessly, though i'll need to remap a few of the ipad shortcut keys.

No issues with having bluetooth and wifi on simultaneously, or with disconnections while idling

The flip stand fits the note 10.1 perfectly and the spacing/key action is great.

Even fits the tablet with the poetic slimline on (in an upside down orientation, buttons at the top)

Was really debating between swapping for the transformer t100, i'll definitely be keeping the note with this keyboard.

Great "on the go" keyboard; if you're looking for one and can find this at a decent price, go for it :)
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] inolvidable:
I have had the BT issue with the Logitech k810 since day one. It doesn't bother me much since I usually have no need to pair them both. However I was feeling curious yesterday evening so I gave the universal fixing method a shot (Home + Vol up + power → Reset) and boom, problem solved (so far).

Let's see if it lasts

iiSo say we all!! from my SM-P6OO
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] eddlum25:
For those who has problems with BT, try the following, it works for me.

Go to settings > Connections > Bluetooth > Hit menu button > Visibility Timeout > and change it to Never

Hope this help.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] earthtk:
Wow.. that actually worked lol. Thanks! I tested for about 10 minutes without disconnection.
[Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl] eddlum25:
That's great news. Looks like this will solve most if not all BT problems.