
Even a cheap cellphone (Xiaomi Note 7) can produce acceptable underwater images. I took it to Seraya Secrets in Tulamben (Bali, Indonesia), to do a few test wide angle shots. Housing used was a Divevolk Sea Touch Pro 3, . Touchscreen worked at all depths (mostly I was in the Blue, around -15 metres deep), and all the settings (Aperture, Speed, White Balance and ISO) were manually selected.
It was coupled with 2 DivePro Vision Pro+ UW lights (15.000) lumen each, and blue filters.