Wifi dropping while Bluetooth activity - Xperia SP Q&A, Help & Troubleshooting

I started to use Bluetooth (developing an app) on my phone, but my WiFi connection drops every time when BT is active. If I turn it off, WiFi recovers.
CynogenMod 12-20150120-UNOFFICIAL-lbhuashan
Android 5.0.2

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[PROBLEM] BT won't turn on

As described in title bluetooth won't turn on. Stock rooted JB 4.1.1 It says BT turning on, but it goes to off by itself
I have flashed the stock rooted ATT zip through SafeStrap in a different slot and BT works alright
Any suggestions?
Wifi working? Usually they go out the same time.
WiFi working fine. Just BT. It's a major annoyance cause I relay on my BT headset too much to get work done.
I have a stock HD that is having similar problems. The BT will turn on but randomly disconnects and turns off/on randomly. This is my second HD (cracked the first one) and the first one worked great. when I connect to my car I usually can't even complete a 1-2 minute call without BT turning off.

[Q]Does anyone know why the Tethering or hotspot can be turned on automatically?

When I am using a Bluetooth earphone, and turn on the WIFI, the WIFI will be turned off by itself after several seconds. And then the Tethering or hotspot is active. If I don't turn on the Bluetooth, it won't occur.
So, I think maybe the Bluetooth can make the Tethering or hotspot to be active, and then force turn off the WIFI. That means I can't turn on the Bluetooth and WIFI at the same time !!!!
Have anyone ever met this issue ?? Anyone who knows how to fix it ?

What is the app that keeps Hotspot alive?

Connected my android phone to my android head unit. Everytime a call comes through it disconnects the WiFi Hotspot. I saw there is an app that keeps the Hotspot alive or at least auto reconnects it but I can't find it now. Anyone know of this app?

P7 - Wifi gets connected but no connectivity when Bluetooth is ON

Do you guys have this problem with Wifi + BT activated?
I go on WIFI and all is fine
I go BT+3g/4g and all is fine
Since i got a smartband, as BT is 24/7, wifi is not working properly.
Been reading about this issue, its kind of generic due to band frequencies.
I have noticed that if BT + WLAN are ON the issue is not really there, it is when the smartband-app is installed.
The app has permissions on WLAN + BT, if i remove those permisions, the issue is semi-solved, but then no notifications are working 100% and Wifi fails from time to time.
Its like when BT syncs it may swith on/off the wlan so the wlan gets >.<
Any Solution/Workaround out of tasker to deactivate BT if WIFI or viceversa .... ?
I tried too changing the Wifi channel in the router from channel 11 to channel 1 (so they are far away) but nothing.
Thanks

WiFi Hotspot / tethering repeatedly restarting

I have a rooted XT1052 which is used solely as an in car OBD2 reader and WiFi hotspot (for my Android car stereo head unit). It seems to have a problem whereby sometimes when the WiFi hotspot is activated, it repeatedly turns on and off the WiFi hotspot. The only way to get it to work is to reboot the phone.
Here's a video showing the fault:
Any ideas how to fix?

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