Recently updated the phone 3a to latest software now telephoto lens supports video .
But the major limitations is that it supports lens switching till 1080 30fps at 60 fps if we zoom while recording telephoto is not used and at 4k if we start recording from zoom < 2x we are unable to switch to telephoto. Only possible to record 4k in telephoto lens if we start from 2x or more zoom.
It’s understandable asking for lens switching at 4k in this price range is too much but lens switching should be provided for 1080 60 fps