I've had intermittent https issues on 4G with v20 and v22, ref.:
[ Invalid Attachment ]
I also had intermittent locking of the screen during active use.
So i have just carried out a manual installation of v22, over the v22 from over-the-air, and hopefully that resolves those two issues.
(I took a backup beforehand, but lost no user data on the device from the upgrade.)