Good morning all.
After some hours perfect function with new update to 8.0 , sim stopped to work.
I'd go to the local dealer and him change my sim with a sostitute, wait all the night and nothing net on the BV8000 Pro.
Test the sim on other phone and it work well.
Go to buy another sim from a different operator, and nothing to do.
This morning downgrade to BV8000Pro_blackview_20180308 (7.0)and all go right , two sim on my phone and all it's ok.
Not a good experience.
I'm from Italy