As people who are passionate about the world of earbuds, we created the oneplus buds 4 app to guide share our experiences and knowledge with users of wireless earbuds. The app covers a variety of topics, including how to activate noise cancellation (anc) and how to use buds with multiple devices. Thank you for considering our app for download and we look forward to hearing your feedback. DISCLAIMER: That the information provided in this app is general in nature and should not be construed as professional advice. We try our best to ensure that the information provided is accurate and reliable, but cannot guarantee its suitability for every individual situation. It is better to consult related professionals for a suitable solution. Use of this application is the responsibility of the user himself.