[Q] HDMI disables wifi? - Galaxy S II Q&A, Help & Troubleshooting

Hallo guys ,
I've tried everything . But it's not working. Whenever I connect the HDMI to my SGS2 the internet stops working! I checked everything, no signal loss , router works perfectly , and computer works fine. Interesting is that the internet works fine on 3g but no wifi !
Any idea whats causing that ? I would be very greatfull
PS: I have E7 stock.

The same problem... :-(

There's a thread about here with much more discussion: MHL cuts off the WIFI and Phone signal.

samung galaxy s2 hdmi cable no wifi
Problem solved just change the channel on your router to 13 or go through the different channels on your router

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Seeking solution to the problem described shortly thereafter:
I have a Samsung Galaxy S III - GT I9300 - STOCK ZTO-4.1.1 without root.
I also have a headset bluetooth, Nokia BH-503 model.
When I listen to music via streaming (Rdio for example), and while connected via WiFi with the headset, the WiFi connection starts to disconnect and reconnect randomly. This only happens when I use my bluetooth headset.
I did the full wipe of the phone, I changed the channel of WiFi, static IP, have disabled the WiFi Power Save Mode (via * # 0011 #) and nothing of the problem being solved. Has anyone experienced this or have a solution to this problem?
Thank you.
Have experienced this problem with Sony MW-1. Changing any wifi or bluetooth-related settings did not fix anything.
I have the same problem with a Nokia MD-310 bluetooth receiver. From what I can determine it is a problem with Galaxy s3 and APT-X bluetooth audio. My SGS3 works fine with older A2DP bluetooth devices but as soon as connected to the MD-310 (apt-x) the wifi becomes flakey and eventually drops completely.
Did you have any luck with a solution for this?
I tried the same things as you, wifi channels, factory reset, but no improvement.
Have not had a problem with Samsung HS3000, use it all the time.
I've done some further digging and I believe it is related to WiFi and Bluetooth congestion through the sgs3 radio on the 2.4 GHz frequency.
+ At home I only have a single band WiFi AP (2.4 GHz) and can't maintain AptX Bluetooth streaming and WiFi connection. Audio skips until WiFi drops.
+ At work I have dual band WiFi. When connected on 5 Ghz I can stream AptX and maintain both connections well. Switch the AP to 2.4 Ghz, reconnect, and the audio starts skipping and soon after the WiFi drops.
Same behavior with two i9300s.
Regular A2DP Bluetooth works fine regardless, so it must just be the added bandwidth requirements of AptX that bring the radio to its knees.
I'm going to buy a dual band router for home and see how I go...
I know this is for 6 years ago,
I had this problem but that is solved now and i am going to say how, maybe someone have this problem right now.
I have samsung galaxy s5 and when i connected bluetooth headest and wifi be dissconnect
Now for solveing this problem:
First go to settings and then appliction manager
And show system apps
Then you must find bluetooth app and click that
Then you must click on "force stop" and then go to storage, now you must first clear cache and then clear data and you must restart an end
Now your problem probably is sloved
Sorry for my english because my languge is persian

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Hi everyone,
I noticed that every time I begin to play music via Bluetooth speakers within 2 mins my wifi internet drops. I remain connected to the Wi-Fi but it shows no internet connectivity. Once I disconnect from the Bluetooth device and restart the wifi on the phone, it comes back to normal and works flawless. My wifi runs on 2.4ghz. I tried changing router channels but there was not much improvement. Is this a fault of the device or is anyone else facing similar issues. If someone can suggest a fix for this it'd be great.
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Anyone!!
Hi. I have similar problem. I am using Pebble smartwatch, Mi Band, bluetooth headset, and laso radio in a car, so i have bluetooth always on. Lately i am experiencing massive problems with wifi 2,4 GHz(slow speeds, instability, dropping connection) - 5 GHz is working fine. Yesterday i have read some tips to turn off bluetooth, and EUREKA, wifi 2,4 GHz works fine.... I know that bt, and wifi 2,4 working on similar frequency, but hey, i didn't have those problems with previous Samsungs(S2,S4,N4,S7), so something have to be not ok with my S9+. I've recorded this behaviour https://www.youtube.com/watch?v=VJTPn_GjJs0 . Have you found a solution? I am gathering data for phone service under warranty.

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