rizwanqureshi786 , via OnePlus 8T Aquamarine Green , Mar 5, 2021 : it is due to corruption of system file. Now you need to flash your System Software and Update it manually. said: Download latest Full OTA Update from oneplus official website https://www.oneplus.in/support/softwareupgrade/details?code=PM1605596915581 move downloaded file to root directory, now go-to settings>>system>>system update>>gear sign at right upper corner>>local upgrade>> select downloaded file now wait system will update your software.
BEsco83 , via OnePlus 8T T-Mobile , Mar 5, 2021 : I have not had any legs or slow problems with my new OnePlus 8t I really like it
StefanStark , via OnePlus 8T Aquamarine Green , Mar 5, 2021 : Is it a lag or is it an UI error message? Maybe scroll the forums for the error message and read the tips there. A few topics already opened.
eastbay , via OnePlus 8T T-Mobile , Mar 6, 2021 : Try to clear cache and reset wifi. Then try the other suggestions
