Sorry for this repeated topic but the last time this was happening with my Xperia X it seemed to sort itself out after rubbing the lens with my finger then with my sleeve (this was even following more techy suggestions like back-up/reset which had very mixed reviews from others with the same problem!) and occasionally clear the camera app data as well though this didn't seem to make a big difference, if any at all but obviously wasn't bad.
It's now happening again and even my advanced solution of wiping the lens won't suffice.
What's happening is I open the camera, the screen is black, the back/home/open programmes icons at the bottom are greyed out so can't be used, to close camera I have to sleep the screen and unlock again then the icons work.
Although it seems stuck with a black screen, it does seem to be able to show something WHILE I'm running the lens but when I stop and take my finger off it goes black again.
Selfie camera has no problem at all and works fine.
