Can be powered off charging, powered off charging is better for the mobile phone, charging speed is faster, and the service life of the mobile phone will be relatively extended, but relatively speaking, the mobile phone is always switched on and off will also affect the service life of the mobile phone, it is best to shut down and charge once in a while, usually it can be powered on and charged, but do not charge while playing the mobile phone!
xr can be powered off and charged, this model is generally wireless charging, Apple mobile phone off, the same can be charged, do not know what you are struggling with