Develop Bugs

HTC one M9 tethering issue .. big one

Device: HTC on M9 Android 5.1 rooted and this issue tested with more than one custom rom + stock one. (Current ROM > LeeDroid )
device version: International, without locks to my service provider.
Main issue: Wi-Fi tethering hot-spot erratic behavior (Simply shuts down when i am in my car.. this was monitored with tablet and wi-fi monitoring software )
After reading and testing 3+ weeks , using 4 usb wi-fi PC dongles, 2 mini routers and every possible solution from forums and sites..... decided to ask for help here.
The story begins 4 weeks ago when i bought HTC one M9.
In my car i have Windows 7 64 PC (Car pc).
The Car Pc was connected to my previous phone (Galaxy S2 Android 4.2.?) with bluetooth dongle for conversations, and PC was using wi-fi tethering provided by the phone.
With Galaxy S2 there was no problems at all.
With HTC one.. no success.. 3 weeks of installing different android roms, changing PC Wi-Fi adapters, installing and uninstalling drivers, connecting routers and so on.
- My home PC (win 7 64) connects to hot-spot without problems.
- My laptop (win XP 32) connects to hot-spot without problems. ( Probably have to try this in car ? )
- My Tablet connects when i am home, but cannot connect when i am in a car.
- My Car PC doesn't connect. Only a few times the PC was able to see the network, but network disappeared after attempt to connect.
- Restarting does not help. Installing and uninstalling drivers does not help. Changing network settings... no success.
Even with external mini router the network simply disappears when the phone is inside the car.
- All Windows network settings changed one by one.. many times without success.
- Many Android APP's tested without success. (Some of them are doing nothing , some of them like WiFi Tether Router are more advanced but again no success)
- There is no problem with bluetooth connection and bluetooth PAN tethering .
- The phone icon for WI-FI tethering is looking ON .. even when network is not available.
- 3G Network is connected and was approved that is OK by successful bluetooth tethering test .
- The problem is the same with Stock, LeeDroid and Android Revolution roms.
- The problem persists regardless of bluetooth state On or Off.
- Default hotspot names and passwords and so on .. doesn't work.
It seems that i have to log something and provide logs to experts here. But i don't know what to log and how to log it.
I know that "Keep it simple and short" rule of this forums is violated by this post - but i am trying to avoid advises to restart the phone and the PC.
Please help... or delete this post.

Solved.. amazingly
Thanks to this forum - the problem was solved.
Why thanks to this forum ?? Because after writting all this things i was able to read and analyze it again, like if the post was not mine.
Following the logic.. the problem was hidden in car itself. By disconnecting the car battery i found that everything is working fine.
Hmmmm, what in my car can cause this?.. and i remembered that the security system of the car have one special item ... microwave proximity sensor
invisibeam-field-disturbance-sensor by Viper alarm systems
This thing caused interference ... but the problem is : - Why the HTC phone was not tested with signals like this ?. ...Samsung S2 have no problems with it.
The funny part is that i have another sensor .. not branded like this one and there is no problem with hotspot now.
(cannot post links sorry)
It is nice idea to call HTC and Viper and ask them some questions about frequency bands usage and interferences.. .. but i am far far away from USA and Korea .. and there is nothing more i can do, than changing this stupid sensor.
Maybe some day i will chahge the HTC one M9 phone, because he is uncapable of handling interferences of this magnitude ........ but not yet... not yet

Wifi cuts out when bluetooth is in use

Whenever I have both bluetooth enabled (and paired with any device) and wifi enabled, and I'm streaming music (Spotify in my case), after several minutes (almost randomly), the internet will stop working. Meaning, the WiFi icon will still show as connected, but it can't connect to anything online. I typically have to disable and re-enable WiFi for it to work, but then it would do the same thing again.
The strange thing is, my Galaxy S4 had the exact same issue/behavior. On both devices, I've seen this behavior regardless of the type of WiFi connection and/or bluetooth device (I've noticed it with my skullcandy headphones as well as my Sync in my car).
Do these devices share the same bluetooth/wireless chipset? Is it an Android thing? I'm forced to either use 4G with bluetooth, or WiFi with wired headphones. Thanks.
EDIT: this is using 5ghz Wifi.

What version of android are you on ?
carrier phone or unlocked. Some times these issues are carrier specific and non existent on others.
If you go into settings - wifi
Uncheck any option that says switch to data if wifi is unavailable.

I can confirm that this is an issue, I experience the same problem on my g4 818p
Sent from my LG-H818 using Tapatalk

WiFi goes on 2.4ghz or 5ghz(most commonly on 2.4ghz) Bluetooth works on 2.4ghz. Unless you are 1m from router, BT is going to butcher your wlan. Had the same problem before. Solved it by buying dual band modem-router.
You could forcing different channel in wlan settings.

http://smallbusiness.chron.com/fix-bluetooth-wifi-interference-71008.html
idea here is reducing interference to bluetooth from competing sources.
- switch off wifi and use data which the OP is doing. Curious that the problems occur even at 5Ghz. Would have thought that band would be relatively immune to 2.4ghz sources.
- reduce the distance between bluetooth device and phone.
- move away from any sources of wifi interference if wanting to use bluetooth.
And now from the ppposite direction. Preventing bluetooth from interfering with wifi
http://www.goldtouch.com/stop-bluetooth-interference-messing-devices/
Read the comments below. similar to the OP.
The key is more management of the problem rather than solution.

One Twelve said:
What version of android are you on ?
carrier phone or unlocked. Some times these issues are carrier specific and non existent on others.
If you go into settings - wifi
Uncheck any option that says switch to data if wifi is unavailable.
Click to expand...
Click to collapse
I'm using the Verizon variant.

this issue hunted me on all software version
Many options live
Router: Try another chanel
Router: Try only 2.4 or 5 Ghz
Router: Try only N or try only b/g/n mixed
App: Delete tunin radio
Last options send back service mainboard change.

i m facing the same problem but only when i do cellular call,
i am using realme wireless earphone , when i used to call my wifi speed gradually decrease , and after that stop working completely..,
after disconnecting the call i need to OFF and ON to work wifi again....,

My wife got the same issue with a Samsung A40 (and before with a Motorola), when using 2.4 wifi and Bluetooth connections (band and speaker for instance) the wifi is hanging. With wifi 5 it's ok. I don't have any issue with my phone using same network. It's crazy.

Bluetooth and Wifi do not work simultaneously in S4 Mini

I have a Galaxy S4 Mini, running on non-rooted 4.4.2. I have lately observed a very peculiar behavior. If I turn on my Bluetooth and WiFi together simultaneously, then try to use both of them, for example stream a song via music app or tunein radio or sound cloud via Bluetooth to speakers and the same time surf the web, I observe that the WiFi signal connection as well as Bluetooth connection drops alternatively.
OR If I try to stream a song from tunein radio or sound cloud using Bluetooth, while downloading the very same song/stream via WiFi it causes the same issue. Either I loose Bluetooth connectivity to the speakers or WiFi connection is dropped.
What can be the cause of this happening and what do I do to rectify this issue?

Same problem here. using bluetooth headset, i can't use it watching youtube on wifi connection. rarely has worked for a couple of minutes, but quite always wifi or bluetooth stops working, and if wifi return to work, bluetooth immediately disconnect the headset...
i've also try to install cyanogenmod 13 official, but still the same problem...

Can't share Data from Android device using bluetooth tethering

Hi folks,
I've got my Xiaomi Mi 9 SE (Global Version) two weeks ago, and I'm very happy with it. There is only one problem:
I can't share my Data Connection via Bluetooth! ..
Neither with my car and its bluetooth speakerphone, nor with my Smartwatch, I can't get managed to share the connection.
So the Bluetooth connection itself is up and running without any problems! Only the data connection is not shared. The car shows me no signal (general network), and the SmartWatch does not get a connection to the Internet.
I looked up the Tutorial here in the old en.miui-Thread but I don't get the "Enable Internet Access"-Button in the paired Device Menu (part#6/7 in the Tutorial). I've activated the Bluetooth Tethering mentioned in part#5..
Is there any other way to share my Smartphone Connection via Bluetooth to paired Devices?
I've re-paired the devices multiple times. I also have done a factory Reset with Phone and SmartWatch. The problem occured with original Global Rom, and still occures with latest xiaomi.EU Rom.
Hope you can help me..
Best Regards

Some news: Occasionally it works. Sometimes I can access the Internet with my Smartwatch, which is connected to my smartphone via Bluetooth. But really rather rarely. And even without me changing anything. I don't even touch the smartphone yet, and suddenly I have Internet access on the Smartwatch, 2 minutes later but then again no more. Damn weird.
EDIT: Solved it! You have to set every Priority for the Wear OS Notifications in the App Manager to "High" and allow everything for this App.. Now I have continous Data Connection via my SmartWatch, Problems are gone

Bluetooth/Wifi issue

Hello
did anyone has the same issue asme with the bluetooth/wifi connecion.
the blutooth is working fine till the wifi coonect or disconnect from the AP either I lost the blutooth connexion or the bluetooth become laggy(using a BT headphone) we have different wifi AP in our building when my phone connect from one the another I lost the BT one.
the other issue is with the WIFI my phone cannot connect to the old Routers, I used my samsung s5 to test the connection to that router and it worked also tested it with a samsung S8 .

try connect your wifi to 5g

2.4g wifi and bluetooth contrast