O1575282562145 , via OnePlus 7T , Oct 31, 2020 : I face issues like frequently lag, While playing music if I get into a game it stops for a second for no reason. I tried oneplus bullet wireless z Base with different phone and it works fine. I think issue is with mobile OS, Is this because of the update? I face lot of issues with calls as well. Sometimes calls are not connected with headset. Also If I don't play/use anything for a while and start playing music it doesn't play in the headset but, it is still connected. Please look into the issue and resolve it as soon as possible.