topic Re: Bluetooth vs Wifi issue in XPERIA archive

Bluethooth vs Wifi issue

Wolfgang_Kemper — Wed, 05 Jun 2013 13:33:11 GMT

Hi, can anybody confirm to see a similar problem ?

I have connected a bluetooth mouse and a bluetooth keyboard to the Z Tablet.

My Wifi seems to have then interferences and can not get data in or out even if the signal strength is on full bars.

When I switch off my Bluetooth devices the WIFI is back on right away.

Also just one Bluetooth device is causing the problem however it looks to me as not as severe.

Re: Bluethooth vs Wifi issue

Wolfgang_Kemper — Sun, 09 Jun 2013 17:38:09 GMT

The firmware upgrade has not fixed this problem.

I can reproduce it anytime I connect a Bluetooth keyboard and Mouse.

The WiFi just looses connection.

If I turn bluetooth off, the WiFi is back.

Please fellow owners, check this and report back.

I do not believe this is a unique case .

Re: Bluethooth vs Wifi issue

Johan — Thu, 20 Jun 2013 10:29:31 GMT

I tried but wasn't able to replicate the issue on my Tablet Z. And it seems that no other user have replied saying that they have the very same issue. I therefore suggest that you contact your local support team to have this examined at a repair center because you should of course be able to use Bluetooth and Wi-Fi connections at the same time. Even though I have seen cases of these two disturbing each other since they tend to run on the same frequencies but BT shouldn't be able to completely block Wi-Fi or vice versa.

http://www.sonymobile.com/global-en/support/contact-us/contact-info/

Re: Bluethooth vs Wifi issue

dsidlauskas — Fri, 21 Jun 2013 18:41:19 GMT

I just received my Z tablet and am having the same problem with bluetooth interfering with wifi. I have an Anker bluetooth keyboard and whenever it's on, my wifi disconnects.

Also, with bluetooth off, the ping time is very long, about 44 ms average using the FING Network application to ping my router via WIFI. My Kindle Fire in the same location with the same app has an average ping time of 4 ms.

How can I resolve these issues?

Thanks,

Dave

Re: Bluethooth vs Wifi issue

Wolfgang_Kemper — Sun, 23 Jun 2013 21:08:23 GMT

Johan,

thanks a lot for your reply.

I have investigated more into this issue.

Just to make clear, Bluetooth works fine, no trouble at all.

I can connect headphones, mouse, keyboard all works fine.

The issue is that the Bluetooth is impacting the WiFi .

It gets very slow and eventyelly disconnects.

As soon as I switch off my Bluetooth mouse and keyboard it works fine.

Now another update, it looks like it is only happen when I connect both the mouse and the keyboard.

I do not believe that this issue is an isolated incident.

Maybe it is the hardware I use and the specific keyboard and/or mouse is causing this issue (Unlikely but an option)

I will try to get my hands on a diffrent keyboard and mouse and will report back.

Just to let you know, I am really happy with the Tablet Z, that's why I am so interested in helping to improve it.

Maybe not the Z if this is a hardware problem but whaterver tablet comes after it.

Re: Bluethooth vs Wifi issue

Stephan80 — Fri, 28 Jun 2013 08:45:58 GMT

Hello Wolfgang,

any news concerning your problem? Couple days ago, I also bought the Xperia Tablet Z and I had the same problem. I tried two bluetooth keyboards but it didn't work anyway. I asked the hotline for advice but I didn't get any help respectively they pretend not to know about the problem. Finally I returned the tablet.

Re: Bluethooth vs Wifi issue

wesley_liao — Fri, 28 Jun 2013 09:15:42 GMT

Hi Johan,

I'm using the XBA-BT75 & is encountering the same problem. Wifi performance dropped drastically till the state where it even disconnects at times. Having such issues is making it impossible to stream videos via DLNA with BT devices connected as an audio device.

Re: Bluethooth vs Wifi issue

Wolfgang_Kemper — Sat, 29 Jun 2013 02:33:50 GMT

Hi Stephan,

no not any news other than that I can reproduce this problem.

It looks it is a problem when the Bluetooth device is bidirectional (means does send and receive) I have no problem with headphones, however I have not tried headsets. I will try this weekend and see how this goes (Skype would be a good testcase).

I believe that if more Xperia Z tablets are sold (Which is a good thing) some users will encounter this problem when they want to use blootooth keyboards, Mouse, etc.

Just because not many of use try to use it as a more professional tool does not mean that the problem does not exist.

No punch at Johan but I have some doubts if he really gave it a thorough test.

Bluetooth is working just fine, the effect is that the WiFi gets slowed down and in some cases even disconnects or gets time outs.

One other comment

You don't know what you miss, this tablet is awsome and I learn every day something new about it which relly distinct it from the pack.

I have an IPad and compared to it Sony's tablet is rock and roll !

Everything I was missing on the IPad, Sony has it.

Maybe they can not fix the problem on the Z but I am a hot candidate for the next generation.

The sound system is just breathtaking ,expandable memory, USB connection, HDMI.... I can go on and on...not to forget that my IPad feels like it is filled with lead compared to the Z.

Re: Bluethooth vs Wifi issue

Wolfgang_Kemper — Sun, 30 Jun 2013 21:30:05 GMT

Just want to say this is not "Assumed Answered"

I checked now also Sony's Dualshock bluetooth joystick and it is causing the same effect.

Also headsets with bluetooth sterieo will kill the WiFi !

So no answer at all!!!!!

I see more and more users complaining about that Bluetooth devices cause trouble.

SONY please some feedback if this is a serious issue and if it can be fixed by an update.

So single me out and tell me to go to a repair center is not working here, you will get into trouble very soon.

Re: Bluethooth vs Wifi issue

dsidlauskas — Sun, 30 Jun 2013 22:01:27 GMT

As mentioned above, I have had the same problem with my Xperia Z tablet. I finally returned it and got something else.

After doing a lot of online research this appears to be a Google problem with Jelly Bean. A lot of Nexus users have been complaining of wifi/bluetooth issues. Like Sony, Google has been pretty unresponsive.

Dave

Re: Bluethooth vs Wifi issue

Michel4632 — Mon, 01 Jul 2013 11:09:31 GMT

Hi,

Same issue here : connecting a Microsoft Wedge Mobile Keyboard prevents the wifi to work properly (although connection seems to remain open).

There is no issue with a mono directional bluetooth speaker.

Very annoying as I use my tablet for professional reasons too.

Regards

Michel

Re: Bluethooth vs Wifi issue

bydavidrosen — Mon, 01 Jul 2013 22:57:00 GMT

same issue here! just got my motorola bluetooth keyboard an mouse. while they are connected, wifi, although it shows it as having a nice strong signal, is basically dead. this really sucks. please come up with a fix for this sony.

Re: Bluethooth vs Wifi issue

bydavidrosen — Wed, 03 Jul 2013 16:26:32 GMT

i and a lot of other people would really appreciate it if this issue was given some more attention. i'm really getting upset about not being able to use any bluetooth devices AND the internet at the same time...

Re: Bluethooth vs Wifi issue

Georgius — Wed, 03 Jul 2013 18:57:46 GMT

Hello,

I would like to contribute with the following elements.

The interference of Wifi and bluetooth is a generally known problem e.g. http://www.cisco.com/en/US/prod/collateral/wireless/ps9391/ps9393/ps9394/prod_white_paper0900aecd807395a9.pdf
All smartphone / tablet providers (including Apple) have problems with this e.g https://discussions.apple.com/thread/3813436?start=0&tstart=0
A possibility is that the Wifi signal is at the limit, so that when you startup a Bluetooth connection (and certainly 2 of them), these signals interfere with the Wifi signal, so that the Wifi connection drops beneath a minimum level and detection of the internet data is no longer possible
I personally have an Xperia P that I use for streaming Internet radio via Wifi and send it to Bose loudspeakers via Bluetooth with no problem at all
I have noticed that some Tablet Z owners have a problem with the Wifi / Bluetooth combination, others not (see Amazon US)

My advice :

Check the status of your Wifi signal (use for example inSSider on your PC or Wifi Analyzer (see Google play) on your Android)
Change the Wifi channel on your router if too many other Wifi networks use the same channel
Check if the Wifi signal of your network is strong enough (typically - 60 dBm)
Check what happens when you activate Bluetooth

Regards

Re: Bluethooth vs Wifi issue

Kem-El — Wed, 03 Jul 2013 20:44:48 GMT

I too am having this problem when connecting my bluetooth keyboard and my bluetooth headset.

- Microsoft Bluetooth Mobile Keyboard 5000

- LG HBS700

Re: Bluethooth vs Wifi issue

bydavidrosen — Wed, 03 Jul 2013 20:59:27 GMT

thanks for your response... a lot of stuff to go over there... and i will check my network signal strength and channel... but just wanted to throw in:

- i haven't yet attempted to connect the bluetooth keyboard & mouse from a different house with a different wifi network yet... i'd assume unelss the next wifi network has issues too, it shouldn't be a problem elsewhere if it's my network, right?

- my galaxy s3 i use all the time to stream music over wifi and stream out to a bluetooth jambox speaker. so the s3 obviously doesn't have this wifi + bluetooth issue at home...

edit: and one other thing, I just installed a wifi signal analyzer and it pretty much fluctuates between -40 and -60... this is on my phone though, not the tablet, but i'd imagine signal strength is signal strength, regardless of what you're reading it from...

Re: Bluethooth vs Wifi issue

Georgius — Thu, 04 Jul 2013 18:43:29 GMT

Hello,

point 1 : it would be a good experience to try this in different networks, as you said if you have the same problem in different networks, this would point in the direction of an Xperia problem

point 2 : electromagnetic interference is an awkward thing : under different conditions (e.g. other Wifi channel, other antenna position, other electromagnetic sources) the Xperia might perform better than the Galaxy - if the Samsung would perform in most circumstances better than the Xperia, this would point again in the direction of an Xperia problem

point 3 : a level between -40 and -60 dBm is an excellent level, however if too many Wifi networks would use the same channel, this situation still can lead to a bad performance, so check this out

Regards

Re: Bluethooth vs Wifi issue

Michel4632 — Sun, 07 Jul 2013 11:37:36 GMT

Let's put it the other way around :

Dear Sony, I recently bought a Wifi 32Gb tablet Z. For professional reasons, I need to browse the internet with an external wireless (presumably bluetooth) keyboard.

As I can't find a list of compatible accessories on the web, let me ask the following question :

Which model of external keyboard can I use to browse the web on my Tablet Z ?

Thanks beforehand,

Michel

Edit August 8 : I've asked the customer service by mail. I got the automated replay and then...nothing (6 weeks now)

Re: Bluethooth vs Wifi issue

raydotron — Tue, 16 Jul 2013 09:10:07 GMT

I have the same issue with a Microsoft wedge keyboard. If I use the speedtest app without the keyboard connected I get 8Mb. With the keyboard connected I get 150Kb max with it only working for small periods of time.

Re: Bluethooth vs Wifi issue

rwparsons — Tue, 23 Jul 2013 00:03:44 GMT

I just discovered this problem today. Bought my Experia Z about a month ago. Decided to do a Google search for the problem. Imagine my surprise when my Google search screen is filled with lots of folks having the same issue. No, it is not my home network, since so many other folks have the problem.

Only the tablet is common to all of us. I don't have this problem with my iPad or my S3 using the same network and the same wireless keyboard. Only happens on the Sony.

If they don't fix it soon, it is going back in the box and back to Best Buy. This is a deal breaker for me.