Blackview Admin, please alert factory that they are currently churning out phones missing o-rings from the four torx screws on the back cover.
I have opened two BV8000's to service in past two days, and each has been missing one o-ring.
Needless to say neither of these phones will survive an immersion test.
It would be good if Blackview could immediately make avail packets of the o-rings from its Aliexpress store so customers can check and fix before causing their phones water damage.
And tell the factory to do better QC...two units across my desk in 2 days...shouldn't happen.