Same issue with iOS 10 Beta 4. The pencil worked fine under Beta 1 through 3. I tried rebooting, re-pairing, restoring iOS 10 beta 4 from iTunes, a new tip on the pencil. The pencil pairs, the battery level is displayed in notifications, but no recognition on the iPad pro 12.9. The Notes.app is also very slow, and crashes within 1-2 minutes, even after reloading Beta 4 via iTunes restore. I'm going to stop by an apple store to see if my pencil works with another ipad pro.
Topic:
App & System Services
SubTopic:
Core OS
Tags: