Contacts

[ayuz]

I've lost all my contacts after updating to 8th beta version, and I can't even sync my phone with my Google account 😡 I'm frustrated 🙃 

[Robin621k]

Try wiping cache partition.
1 Power down phone.
2 while phone is off press power key and Volume up key simultaneously.
When you see the Samsung logo release.
Using volume down key, scroll to Wipe cache partition, and be mindful that wipe/factory reset is right above.
Using power key press ok.
Scroll down to fix apps.
Your phone will now reboot.

Hope this works