[Q] Wifi performance when using Bluetooth - Xperia Tablet Z Q&A, Help & Troubleshooting

Hi
Just got my 16GB WiFi Tablet Z running 4.1.2 (build 10.1.C.0.370) a few days ago and I've noticed that while I have my Bluetooth headphones connected (to avoid using those pesky port covers ) the WiFi performance of the tablet becomes very poor and erratic. The tablet doesn't disconnect from any networks, it maintains a connection and the signal strength shows no change but pages become very slow to load (if they load at all) and YouTube videos will not buffer properly. It will then work fine for a few minutes but then have issues and become unusable afterwards.
I've had this issue every WiFi network I've tried. 2 in the house (2.4Ghz) and a 5GHz one along with the mobile hotspot on my phone.
I've never had this issue on any other device I've had (OG Nexus 7, HTC One, HTC One X+, Samsung Galaxy Note, ASUS Transformer TF100) so
I'm wondering if this is a software issue that may be fixed with the upcoming 4.2 update or a custom ROM or is it still there on other ROMs and it is a hardware issue?
Thanks

573W1E said:
Hi
Just got my 16GB WiFi Tablet Z running 4.1.2 (build 10.1.C.0.370) a few days ago and I've noticed that while I have my Bluetooth headphones connected (to avoid using those pesky port covers ) the WiFi performance of the tablet becomes very poor and erratic. The tablet doesn't disconnect from any networks, it maintains a connection and the signal strength shows no change but pages become very slow to load (if they load at all) and YouTube videos will not buffer properly. It will then work fine for a few minutes but then have issues and become unusable afterwards.
..
Thanks
Click to expand...
Click to collapse
First Time i connect with Bluetooth (Keyboard) the Wifi connect was lost...i had to restart the Tablet.. I hope it is only a Software Problem

This is a known issue for this specific tablet. It's on the Sony mobile discussion forums for tab z. Bluetooth and wifi work fine separately it's just when they are on together that issues appear. For me, wifi didn't stop working all together, it just took far too long to even load the most basic of websites. No response from one just yet.
Sent from my SGP311 using Tapatalk 4

UPDATE: Just updated to 4.2.2 and from what I have experienced, it seems as if they have fixed the issue. I can use my Bluetooth headphones and listen to music without any Wifi problems
Could anyone else confirm this?

573W1E said:
UPDATE: Just updated to 4.2.2 and from what I have experienced, it seems as if they have fixed the issue. I can use my Bluetooth headphones and listen to music without any Wifi problems
Could anyone else confirm this?
Click to expand...
Click to collapse
I am still facing this issue.

Related

Finding the reason for Bluetooth/WiFi Issues- Need more Information

Hello people,
This is not the normal complaint thread about WiFi and Bluetooth issues, so please don't flame without reading.
I have managed to reproduce and NOT reproduce the WiFi speed issues when streaming data or audio thru Bluetooth, and I have found a pattern.
I'm almost sure it is a Software issue. With the Prime running WiFi and Bluetooth over the same chip/antenna it is normal to have a speed drop when using both, but not to bring WiFi speed to a crawl (300kbps tops).
So, what I'm asking for is information about the Bluetooth device you are using, if you can give me brand and specific model better, the more information I have about the device the merrier
Second, I need information about your Wifi speed with stream and without stream or at leleast if you have major speed drops or your if Prime works well.
Ill be going this weekend to Saturn or something to try top-notch super expensive Bluetooth devices and see the results.
What is the pattern you found? It might explain why some people bt/wifi works fine and others dont.
demandarin said:
What is the pattern you found? It might explain why some people bt/wifi works fine and others dont.
Click to expand...
Click to collapse
Something about the Bluetooth profile being used by the tablet when connecting to devices.
I posted some videos about my prime being able to stream HD video while listening to it through Bluetooth. And some speed tests while using my AKG 830BT headphones.
What was my surprise when using the cheaper Motorola DC800 Bluetooth receiver or headphones? The issue everyone was complaining about here, WiFi speeds of 150K... which of course is useless for anything but chatting.
Doing some research I've found out that those motorola devices use older BT versions (2.0) and one of them does not have HQ A2DP audio.
Long story made short, after testing a few of the BTdevices I own, I found out some of them cause issues while others not.
That's why I'm asking now here, users with and without issues to post their BT Device Models/Brand so I can search which BTprofiles are being used and if some of them are causing issues.
Zephyrot said:
Something about the Bluetooth profile being used by the tablet when connecting to devices.
I posted some videos about my prime being able to stream HD video while listening to it through Bluetooth. And some speed tests while using my AKG 830BT headphones.
What was my surprise when using the cheaper Motorola DC800 Bluetooth receiver or headphones? The issue everyone was complaining about here, WiFi speeds of 150K... which of course is useless for anything but chatting.
Doing some research I've found out that those motorola devices use older BT versions (2.0) and one of them does not have HQ A2DP audio.
Long story made short, after testing a few of the BTdevices I own, I found out some of them cause issues while others not.
That's why I'm asking now here, users with and without issues to post their BT Device Models/Brand so I can search which BTprofiles are being used and if some of them are causing issues.
Click to expand...
Click to collapse
This makes sense though since it most likely is a hardware issue. A2DP is high bandwidth. The identified cause of our woes is the fact that wifi and bluetooth are on a single module. So when A2DP is being used, most of the modules time is used on bluetooth and less on wifi, thus slowing down speeds. The solution from ASUS was using RMAs to add another module so that one is dedicated to wifi and the other to bluetooth.
I could be wrong though.
st33med said:
This makes sense though since it most likely is a hardware issue. A2DP is high bandwidth. The identified cause of our woes is the fact that wifi and bluetooth are on a single module. So when A2DP is being used, most of the modules time is used on bluetooth and less on wifi, thus slowing down speeds. The solution from ASUS was using RMAs to add another module so that one is dedicated to wifi and the other to bluetooth.
I could be wrong though.
Click to expand...
Click to collapse
It would make sense, if it wasn't backwards!
The High Quality A2DP Profile audio is the one NOT killing my WiFi speeds. Every time my Prime connects to an older device using one of the other profiles the WiFi speeds go to hell.
Both WiFi/Bluetooth being in the same Module can cause speed drops, but not completely kill WiFi Speeds.
These are my speeds when using the AKGs Headphones:
No BT stream: 24.91 Mbps.
BT Audio streaming: 18.13 Mbps.
(video and stuff here)
That speed difference IS the one caused by both running on the same chip.
Same tablet, same router, but I change the headphones and the speed wont go past 150kbps. Doesnt matter if the prime is sitting on the router.
Anyways, I'm asking the people who was complaining about the speed (and those whose Primes do work)to feed some info, it is not like I'm gonna waste others time Ill do the research and tests. Just need a bigger data pool.
Go for it. Good luck
Sony DR-BT101 (headset, not an ear piece)
I was told by Asus they have a "fix" with new hardware if I wanted to RMA my device. I just don't know how effective the "fix" is.
fsured said:
Go for it. Good luck
Sony DR-BT101 (headset, not an ear piece)
I was told by Asus they have a "fix" with new hardware if I wanted to RMA my device. I just don't know how effective the "fix" is.
Click to expand...
Click to collapse
How bad is your WiFi loss, partial loss (normal from using WiFi/BT on same chip) or total, like going down to 150K~?
I have never measured as I just don't use the combo anymore. I know it happens, got frustrated, and use my wired ear buds after the first few weeks of owning the tablet. It does have the signal degrade though. The headset is about 2yrs old.
I can test it out when I get home. The work wifi is limited to 750kb download speeds per user.
I have a Netgear WNDR3700V1 with fibre 35/35mbit
Using the Plantronics BT300 headset the wifi drop to under 1 mbit or almost zero, YouTube buffers.
Without BT I have full speed above 30mbit at least.
The only way to "avoid buffering and dropouts" is to use a WN3000 Netgear Extender in same room where the Prime is.
This way I manage to listen to Youtube without drops.
So if the signal is still stron the loss is "not bad", but how many do have 35mbit up and down with fibre.
Those with low speed, will still have drops.

Bluetooth skipping with screen off

Hello people, I'm glad to join this forum!
I caught my Thor right in time before the latest update and successfully towelrooted. Many thanks to the local geniuses!
Everything works peachy after the root, google play, etc.
The only issue I encountered after rooting is that a couple of apps stopped working - Yandex Disk and Apps&Game (for 4pda forums). Deleting cache didn't help, had to remove both. I haven't tried to reinstall the yet.
And as for the title issue. If I use the bluetooth headset with hdx it works great, until the screen times out or turned off. Then the audio starts skipping randomly, through any app.
Also I tried using a BT mouse with the device, but it's pretty much useless for browsing - it starts to interfere with wifi, pages won't load, or load very slowly.
Just thought to ask if it's just my device or such BT issues are "normal" for HDX.
Thanks!
Sent from my KFTHWI using Tapatalk
Bluetooth skipping
"And as for the title issue. If I use the bluetooth headset with hdx it works great, until the screen times out or turned off. Then the audio starts skipping randomly, through any app."
I have had the same issue too. Both on stock rom and Cpasjuste/ggow's rom on Apollo. So no, this isn't just you.
I have tons of tablets and on each one certain Bluetooth devices will slow or even outright break wifi. It's the most annoying thing. At any rate the only solution I know of is to have 2 routers, one a 2.4 ghz b, g, n for the whole house to use and one 5 ghz router placed near where you primarily use your devices while on bluetooth. Bluetooth devices interfere with wifi on 2.4 ghz and 20/40 mhz frequencies so a 5 ghz router will still run your device and Bluetooth will work well. Yea it blows. One thing that REALLY makes this worse in tablets and laptops is when the manufacturer puts the radios on the same chip, or even real close together. Totally blows up the functionality of the device, and it happens way you more than it should. Cheap manufacturers make mistakes.

[Q] Galaxy S4 Supercell Servers Connection Problem

So I have been playing Clash of Clans for quite some time now (over a year now), and this has always been a problem with this particular device, and the router (idk if it's the router causing the problem) that this wi-fi network uses.
I will try to specify my problem to the best of my abilities.
So what is going on is my Galaxy S4 on this particular wi-fi network I am on has very frequent connection problems on Supercell games.
With the recent updates they released, they added the connectivity issue icon that pops up in the middle of the screen when it begins to lose connection. This happens frequently. Most of the time, anytime I move to a different screen while this icon is active, it will then display the little loading icon (orange circular icon). At this point in time, I will have to completely reload my game in order to regain a connection. This also happens on Hay Day too, except Hay Day doesn't have the connectivity issue icons. I can get onto my 1st Generation Nexus 7 and play Clash, and I notice it actually "nexts" faster than my Galaxy S4, as well as never having these connectivity issues. It's weird because I am almost certain the Galaxy S4's CPU is much faster than the first generation Nexus 7's. I am wondering if perhaps this is some sort of an issue with the firmware version I am on. I have tried turning on airplane mode and turning only wi-fi on, and it still has the same issues.
Device: Sprint Galaxy S4
OS: Jellybean 4.2.2
Router: Tenda W311R
My phone IS rooted on the stock rom.
I read that S4s have connectivity issues with certain D-Link routers, but I have no idea if this is one.
Does anyone have similar issues, or have seen similar issues with this phone on Supercell games?
Bump! Does anyone know what this might be?

Slow 2.4 ghz Wifi when listening to BT speakers.

My phone is usually connected to wifi ac and i curently have no issues with it. (two or more past vendor versions had serious problems as well).
Long story short, I thought that newly buried ethernet wire was defected but it turned out that my Spotify (and all other listenting apps) will plummet the download speed over wifi n when using bt audio. Curiously, only download seems to be affected.
Tried some recent vendors, and the last two stabl miui roms and no fix.
I distinctly remember, two months ago when I had no signal in a foreign village because a broken beta rom/vendor. It didn't grab reception when it should have been back...
So...what vendor to try? Preferably, one that works with latest pixel experience rom and has l1 certificatio. (Because who knows hat happens then...my GPS won't work because reasons unknown).
I had some similar BT/wifi related drama once. Turned out my BT mouse and wifi router were fighting each other over the 2.4ghz radio band. Mouse was choppy, wifi was unstable. You know what to do

wifi connection interrupts automatically when not using the tablet for a few minutes

Hey there!
Ever since the official Android 10 update I'm experiencing interrupts in my wifi connection whenever I put my tablet away for a few minutes. I'd guess that's probably some new feature for battery saving, at least it's called "sleep mode" on my OnePlus 5T, but I haven't found anything similar on my tablet yet. The patch notes for the Android 10 update also don't mention anything wifi or battery related as far as I can tell....
It's not my wifi since my phone and my bf's phone all work as usual.
Any ideas or anyone experiencing the same issue? Already checked dev options in the settings, but couldn't see anything related. Maybe I missed some settings somewhere?
Samsung Galaxy Tab S6, 256 GB LTE (SM-T865)
push.
I've been experiencing problems with WiFi direct screen share connections too, like Miracast protocol
Yakumichan said:
Hey there!
Ever since the official Android 10 update I'm experiencing interrupts in my wifi connection whenever I put my tablet away for a few minutes. I'd guess that's probably some new feature for battery saving, at least it's called "sleep mode" on my OnePlus 5T, but I haven't found anything similar on my tablet yet. The patch notes for the Android 10 update also don't mention anything wifi or battery related as far as I can tell....
It's not my wifi since my phone and my bf's phone all work as usual.
Any ideas or anyone experiencing the same issue? Already checked dev options in the settings, but couldn't see anything related. Maybe I missed some settings somewhere?
Samsung Galaxy Tab S6, 256 GB LTE (SM-T865)
Click to expand...
Click to collapse
I am having he same issue. did you find some solution?
abdulbasitnawaz said:
I am having he same issue. did you find some solution?
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Click to collapse
Yup! I did a couple of things though, so I don't really know which of them actually helped fixing the issue, or if it's even required to do all.
- I got 2.4 GHz and 5 GHz wifi. They shared the same name, which made my tab switch between them often. I renamed both wifis so they don't share the exact same name (fun fact, they're now called Pizza 2.4 and Pizza 5). My tab is now only using the 5 GHz one, the 2.4 one now is only for devices that don't support 5 GHz (like my New Nintendo 3DS XL or my printer), because I live in an area where many people are, and the more wifi channels are occupied, the messier (and more prone to interferences) it gets. 5 GHz has a smaller range but is also stronger, which is perfect for my small flat. On 2.4 there's way more interferences because it has more range.
- In my router's settings, I've set the tablet's IP to static, because I've read somewhere that this might help.
Can't tell if both steps are required, you might just wanna try out one first if you don't necessarily want a static intern IP for example.
My tablet also used to take ages to find my wifi, which is now fixed for some reason. On my OnePlus 5T it still takes very long to find my 5 GHz wifi, although it also has a static IP. But both devices won't disconnect randomly anymore.

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