Yashsingh29 , via OnePlus 7T , May 7, 2021 : Several issues are being faced after I updated my OnePlus 7T device with OxygenOS 11. Here are the issues: 1. When I connect my phone to WiFi it loses its connectivity very frequently. Wifi gets automatically disconnected with the designated router and search for new devices. This is more concerning because it keeps doing it every 2 minutes, sometimes even once a minute. It is disturbing because my class gets stuck and I miss the content teacher just went through. It creates problems in my presentation and also at my work. If I am streaming Netflix, it loses the connectivity and stream indefinitely. 2. When any text message is sent, the banner which pops up regarding the remaining messages or balance makes a message sound now, which was not the case earlier. It is confusing because it gives the indication like you have got another message. And nobody needs a sound alert of that banner. I haven't figured out rest of the issues, but I am confident that OnePlus Team will look into them and provide solutions at the earliest. Thank You.