madhav_kaushal , via OnePlus 7 Pro , Oct 23, 2020 : The phone doesn't seem as seamless as it formerly was. Since the last few updates there has been a persistent issue with it lagging while clearing out the notification drawer. In addition to that, it is especially bad when WhatsApp is open/running in the background. I've been a OP user for such a long time and this is very off-putting. Recently it came back from the repair centre but still the issue hasn't been resolved.