I have a nokia 6 on Oreo 8.0.0 (00WW_5_22A), when connected to the the handsfree kit in my car every few minutes the phone call audio goes all glitchy (sounds like the person at the other end is underwater) for a few seconds making it impossible to have a decent conversation.
I have tried all manor of tests at Nokia's support chat request and nothing is making the problem better. The things I have tried so far are;
-Resetting the network settings
-Setting the TTY mode to full
-Doing a soft reset
-Doing a hard reset
Does anyone have any ideas how I can make my phone usable with a bluetooth handsfree kit?
Hi Jason,Maintaining good voice quality in a moving car is a challenge for the cell network and the phone. Depending on the mobile operator, you may get better results if the preferred network type is set to 3G or 2G instead of 4G.
- Did you try this already?
Regarding Bluetooth interoperability issues, it is unfair to blame only the phone, or only the handsfree.
- How does another phone with the same SIM perform with the handsfree kit?
For reference please, and for others to maybe provide better answers, which mobile operator/carrier in what country, and what is the make and model of the handsfree kit?
Thanks for the follow-up Jason. It seems you already tried everything except replace the phone or the handsfree kit.
Plusnet Mobile = EE (Huawei network). Both EE and HMD/Nokia must be aware of the 4G and VoLTE issues with Nokia 6 at EE. There are several posts regarding this in the forum. - Hopefully the Bluetooth call audio quality improves when the basic connectivity issues is sorted out.
Please let the forum know how it goes.
Thank you for posting, it's nice to know it's not just my handset! I've had to go back to using my Samsung as I do a lot of driving for work and it's important for me to be able to take calls whilst driving.
I really like the handset, I even prefer it to my S8 but the software updates just aren't good enough.
FYI, Mercedes-Benz provide a comprehensive mobile support website at
There's an update for SIM Access Protocol and audio quality.
MB has tested and approved Nokia 8 for their 2017 models (with limitations regarding music playback control).
Radio interference may affect Bluetooth audio quality:
Toggle WiFi off during Bluetooth pairing and while troubleshooting.
In Settings > Securiy & location > Location > Scanning = Try toggle off both Wi-Fi and Bluetooth scanning to see if this makes a difference - but keep location On during pairing and use.
In Settings > Connected devices > Bluetooth = Try temporarily delete other devices (that the phone may be searching for) and close other apps that use Bluetooth.
Of course it should 'just work'. I just wanted to repeat, regarding Bluetooth interoperability issues, it is unfair to blame only the phone, or only the handsfree kit.
Car infotainment systems is much more complex than my legacy BH-111 Bluetooth headset and its 4-way remote control box, so I'm out.
Thanks for trying and for feedback.
If the Update_SAP_V4 download from the MB website for the car radio, and the general Bluetooth troubleshooting steps does not improve the call audio stability, then the next step is a Mercedes workshop.
I have the same issue in my wife's LandRover Discovery Bluetooth systems,
continuously broken audio, it is impossible to understand the communication. Maybe there is something I have to disable to improve the audio quality.