iPhone7 iOS 14.5.1. Since updating to iOS 14 my phone has annoying things as well. I thought that my phone is damaged but found this thread. Hope there's new firmware update soon. Calls: Voice or any OTT apps Calls-in or Calls-out: Connected but cannot hear any sound or talk , some times i can hear crackling radio sounds ,when press Volume Up/Down it takes a while to apply and show volume icon on the screen, looks like the phone is checking something ,nothing you can do with speaker phone ,some said that you can make calls using bluetooth device but it's not my case, bluetooth headset does not help. ,Voice Memo app cannot record any sound, press Record button then app auto stop recording and save a record of 00:00 length. Restart phone may help some times but it happens all over again Reset with Volume Down + Power does not help as well Erase Alls. I'm backing up ~80GB of photo data then i will try to erase and reset all to see if it solve the problem. Camera: cannot capture Pictures or Videos , there's a flickering as if phone is already captured the picture but then no picture was saved. , some times can take picture but you cannot focus Reset phone could help but then it happen again and again. It's really mad when you need to capture something and the phone is malfunction.Phone is really hot when using. ,Battery drain fast when using Wi-Fi or LTE the same, especially when connecting using VPN I disabled: 'Wi-Fi Assist' (Settings Cellular at the end of App list Wi-Fi Assist) , which means telling the phone that when i'm on Wifi don't try to use LTE to improve connection or anything , i feel it has some improvement