Customers who are using some of the Android smartphone such as Huawei may encounter the issue that the screen wake up time can only set to be 10 minute the longest. In case the screen cannot awake underwater, please set up the phone following the below link.
Thanks for using SeaTouch series underwater touchscreen housing. To avoid any accidental error occurs to the housing or your smartphone, here is the important note for you to read before use.
Also, it's suggested to read the user manual before launching the housing.