To prevent hearing loss, please do not listen to music using earphones excessively.
Users with older OnePlus devices (3/3T/5/5T/6 ) must turn on OTG mode before using the Type-C Bullets (OTG Mode is accessible via Settings > System > OTG Storage. (The OnePlus 3/3T will receive call function support by the end of November. The OnePlus 5/5T/6/6T/7/7 Pro supports all functions.)
This function will be automatically turned off after 10 minutes inactivity, it may not be compatible with other Android-based smartphones, please check with your manufacturer.)