My partner calls me after 11pm ever night but it goes straight to voicemail he calls again and it goes through. I have checked do not disturb and can not think of anything else
Have a look for a night time mode that kicks in at around 11pm as on some phones I have seen this route calls to VM and the second time it puts the call through.
- Xperia 1V - o2 and Spusu - Pixel 8 Pro - o2 and Vodafone UK