Hi Abhi9, We regret to hear that you are not satisfied with the noise canceling function of the headphones. Your feedback is greatly appreciated. For optimum performance, make sure that the software version of the headset is up-to-date (via the Sony Headphones Connect app). The Sidetone function's effect makes it easier to talk using the headphones and helps the headphone microphone pick up sounds and play your voice naturally. As a result, the noise canceling function works differently from when playing music. If you hear ambient sounds, headphone operational sounds, or white noise (a slight electrical noise with continuous static sound) from the headphones, that is also an effect of the Sidetone function, not a malfunction. Noise cancellation doesn't transfer during telephone calls. Although it protects the headphones user from the surrounding noise, it doesn't apply to the receiver of the call: they will potentially hear background noise. As a workaround, you can check the settings of your source device or the app that you are using for mic sensitivity if available. Hope this helps. In case you need further assistance, please email the below information to socialsupport@am.sony.com. Name: Username: Model Number: Issue: Telephone Number: Or contact our product support team via phone call or chat through this link: https://us.esupport.sony.com/support/s/support-contact?language=en_US&category=headphones Sincerely, -Ralph

Hi Leofranca, Thank you so much for sharing your great experience with us! We're happy that you enjoyed your long flight using the WH1000XM4 headphones. Nice to know it suits your needs and expectations. Intelligent and intuitive, the WH-1000XM4 headphones offer further improvements to our industry-leading noise cancelation, exceptional sound quality, and smart listening that adjusts to your behavior and your location. Using the Sony Headphones Connect app, Ambient Sound Control lets you adjust the volume of background sound and gives you the option to allow voices alone to be heard. Meanwhile, the Equalizer lets you customize sound levels to suit your music. Thanks for choosing Sony! - Kris

Hi Morghen, Thank you for the feedback on your experience with your new Sony WH-1000XM4 Headphones. While we're glad you like the amazing sound quality and industry-leading noise canceling feature, we regret to hear you're having an uncomfortable experience wearing the headset after a long period. This is usually not the case for our WH-1000XM4 since It features lightweight design, super-soft, pressure-relieving earpads in foamed urethane that evenly distribute pressure you'll barely notice you're wearing them.To ensure a comfortable fit, we do recommend adjusting the left and right headband slider. Should you need further assistance, please email us at socialsupport@am.sony.com with the following details: Name: Username: Model Number: Issue: Telephone Number:  Intelligent and intuitive, the WH-1000XM4 headphones offer further improvements to our industry-leading noise cancelation, exceptional sound quality, and smart listening that adjusts to your behavior and your location. Using the Sony Headphones Connect app, Ambient Sound Control lets you adjust the volume of background sound and gives you the option to allow voices alone to be heard. Meanwhile, the Equalizer lets you customize sound levels to suit your music. Thanks for choosing Sony. -Sam

Hi Raul, That's really cool! We're thrilled to hear that you feel the WH-1000XM4 is the best sounding headphones that you've owned. It's good to know that your investment is worth it and you are enjoying the top-notch sound quality and overall features of our WH-1000XM4. Thank you for leaving us such a wonderful review! Thank you so much for your purchase! -Jess

Hi Rajesh28_dc, Great! We're glad that you are enjoying the sound quality and battery life of the headphones. Intelligent and intuitive, the WH-1000XM4 headphones offer further improvements to our industry-leading noise cancelation, exceptional sound quality, and smart listening that adjusts to your behavior and your location. Using the Sony Headphones Connect app, Ambient Sound Control lets you adjust the volume of background sound and gives you the option to allow voices alone to be heard. Meanwhile, the Equalizer lets you customize sound levels to suit your music. Thanks for choosing Sony! -Ralph

Hi Brizzy, We regret to hear that you're having an issue with your headphones. This is definitely not the experience we'd like you to have. We'd love to help and turn your experience around. First, please ensure the software is updated. You can check the software version by launching the Headphones Connect App. You may also find the link below helpful: https://www.sony.com/electronics/support/articles/00229328?utm_source=glean In addition, you may also reset or initialize the headphones. https://helpguide.sony.net/mdr/wh1000xm4/v1/en/contents/TP0002752743.html If this does not help, please email us at socialsupport@am.sony.com with the following details: Name: sony.com Username: Model Number: Issue: Telephone Number: Sincerely, Erin

Hi Peppe1478969325, While we're glad you like the noise cancelling feature of the WH-1000XM4, we regret to hear you're unable to connect to the app. If the Headphones Connect app does not detect the headphones, please follow the steps below. Check if the issue is resolved after you complete each step. Make sure the Sony | Headphones Connect app is updated to the latest version. Power off your smartphone device and then power it back on. Update the software of your smartphone. Uninstall and reinstall the app. Inititalize the headphones. REF: https://helpguide.sony.net/mdr/wh1000xm4/v1/en/contents/TP0002752746.html If you are unable to resolve your concern, please email us at socialsupport@am.sony.com with the following details: Name: Username: Model Number: Issue: Telephone Number: Sincerely, Sam

Hi jennypoooh, We're glad you love the headphones. To isolate the issue, we recommend resetting the headphones to factory default setting. Check this link on how to. https://helpguide.sony.net/mdr/wh1000xm4/v1/en/contents/TP0002752746.html The WH-1000XM4 is a new design, with intelligent and intuitive Ambient Sound Control features that include improvements to Multipoint connection and our industry-leading Noise Cancelation, exceptional sound quality, and Smart Listening that adjusts to your behavior and location. Thank you for choosing Sony! Regards, David