Hey @Mansi_ASUS ,
not sure is this Firmware Version: WW_33.0220.0220.89? Serial Number of device is R6AIB700P607935.
And yes, I experience this issue in all apps that can use front camera, behaviours is the same, it works for a few seconds then freezes. I did yesterdays update since it mentioned some fix for camera, but it didn't help, I still have the issue.