iam_shivam , via OnePlus 7 Pro , May 15, 2021 : Never thought will be facing these types of issues having an OnePlus device. I am a OnePlus 7 Pro user and after updating my device to android 11 i think i have done the worst thing in my life. The phone is super buggy and laggy. I would like to share my experience below : 1. Dialer app bug : when someone calls to me the dialer does't show the contact name instantly rather it takes 4-5 seconds then name appears on the screen. 2. Restarting issue : previously when i restart my phone it just takes few seconds to do that but now it keeps on taking time more and more. 3.Frame rate drops : the reason to purchase a oneplus device was speed which is now a gimmick claimed by company. Too much frame drops in UI and most apps. 4. Overheating issue in camera app : when i used camera for 15 to 20 minutes continuosly it shows phone is heating too much due to which i was not able to click photos and videos as the button also was not pressing. 5. Battery Draining Fast : When my phone was working on android 10 i was the most satisfied person when it comes to battery but now...it doesn't even lasts for half day if i use continuosly for 3-4 hours. 6. Notification Panel drop down bug : whenever i open any music app and then exit from the app it always shows on notification panel drop down. 7. Google assistant misbehaves : i don't know why but when i am talking to some other person google assistance automatically activates. These are the major issues which i am facing in my day to day life and many more minor bugs which is ignored. I think oneplus should again think about the devices which they have sold previously as they are focusing mainly on the newest ones. Oneplus brand was famous because of their software and speedy devices which is lost in today's time. Kindly look into these issue and try to sort it out if possible.