[Bugreport] Bluetooth instability

ColorSageColorSage Level 3
edited September 2020 in ZenFone 6


Since I've bought Zenfone 6 I could see that bluetooth device connecting takes more time than on some other phones. That was fine though. Recently I've bought BT5.0 True wireless earbuds (chinese, Blitzwolf BW-FYE7) and connecting with these often result in bluetooth crash and timeouts which isn't the case with SGS6 or Huawei Mate 10 Pro. More detailed description below:

-Blitzwolf BW-FYE7: bluetooth hangs while connecting in many cases(especially when enabling bluetooth while earphones are already on), rendering phone almost unusable for a while; entering settings will result in a crash, using Quick Setting may crash SystemUI, fiddleing a minute or two fixes the problem.

-Sony A400BT: establishing the connection can take up to few minutes(!) while using S6 that usually was around 30 seconds.

-JBL Flip 4: a minor issue, doesn't connect immediately (which again, is almost instant on some other phones) and it can take up to 1 minute.

Bluetooth can also hang in about 5% of other connections, provided I'll get sick of waiting and disable/reenable bluetooth. I can provide logs but I need to know which app to use and and when to start collecting them. I am quite certain this is just a software bug.

EDIT1: It seems bug reproduction scenario is a bit harder to make. Now my earphones connect flawlessly when I tried to hcidump bt. I will reply to myself when I'll be able to log it so there's no need to asap replies :)


  • You are aware that certain wifi frequencies and even poorly shielded usb3 ports can interefere with Buetooth, and vice-versa of course.

  • ColorSageColorSage Level 3
    edited October 2019

    I am. There is no wifi in my car though. I can expect prolonged connecting or singal loss in places with many occupied bands but certainly not a systemui-wide crash.

  • I don't know any good app. You can continue trying with hci dump. I haven't noticed any BT issue myself connecting to my daughters bluetooth speaker, my sony wf-1000xm3 inear and Volvo S60. They all connected in a matter of seconds

This discussion has been closed.