Hello, I have the IU stop problem, why? How can I solve this? When I reboot the phone, I can touch normally in the phone, but after 2 minutes the error appears and the phone block and stay very, very slow. I already did factory reset, but after a while the error come back. Image in attachment, are i...

After update to BV8000Pro_Blackview-V0.1_20170718_20170718-1901, I can register a new fingerprint but I can't unlock with fingerprint.