Not often, but more than occasionally, my friend in Sprint network (I'm Verizon, unlocked s10) goes directly to voicemail without ringing or popping up. I only know when I get a voicemail notification...
Please try clearing the system cache and rebooting your device.
If issue persists, please send us an error report with screenshots from One UI Beta App (Beta Feedback -> Send feedback-> Error Reports -> "Select Category" -> Input frequency and Description" -> Send (Top Right Icon). We appreciate your help for supporting beta program.
