I have an iPhone 12 which I charge on an Apple Wireless charger and I’ve had an issue twice since upgrading to IOS16.3. The phone was on charge all night and it has the MagSafe so I know it’s attached properly but in the morning it has not charged and I only had 3% battery left. I tried reattaching to the MagSafe several times but it would not show the charging symbol, so I plugged in via the hard wire charging cable and got the same, it refused to charge. I then did a hard reset and as soon as it rebooted it charged fine on both wire and wireless. This has happened again since and is really frustrating.
More annoyingly, my wife recently upgraded her iPhone XR to IOS16.3, and she is getting the problem occur frequently! 2-3 times a week! She uses a hard wire to charge her phone, when the issue occurs and I try to use the wireless pad, the phone just continuously Reboots itself. After a few attempts at getting some charge via The cable and a hard reboot it appears to sort itself for a while again.
There is clearly an issue somewhere with IOS13?