I also had problems when entering the pool, the camera was stuck (lens) and the microphone was bad, after 2 days "returned to normal".
What IP68 is this? I have a Nomu S10 Pro that is much better in the water, so I have not tested the S70's resistance yet. The S10 Pro is excellent.
I do not buy anything from Doogee anymore, I'm only going to buy Nomu now.