I'm using iqoo Z3 5G since December (2021). After Android 13 OTA update this handset facing so many bugs like (charging animation sometimes not appearing during charging, charging sound and vibration option not working even it was enabled, during standby at night time it consumes around 7 to 10% even I'm using single sim (4G), in my area signal strength also very good but I'm facing this problem also, Ram management was very poor. I installed only social media apps, online payment apps and PUBG. When this handset comes to multitasking it performs good but at the time of playing PUBG I'm facing utter lag guys one of the worst experience during game play. IQOO offers ULTRA GAME MODE but seriously I don't know what was the use. When you switch to performance mode there was no change in perfomance device getting overheat, frames are dropping during gameplay. Any IQOO Z3 users facing these problems please comment. 

         IQOO I don't know why you are not giving as much importance to the update. But seriously IQOO Z3 handset is very worst after this Android 13 update. The size of the package was around (4.52 GB) 😖 . Very very very disappointed........