iPhone 12 starts to glitch and restart itself after the iOS update
while using my iphone 12 after ios 18 update while my phone is 27% its the 2nd time it glitches and restarts its self
[Re-Titled by Moderator]
iPhone 12, iOS 18
What's the battery health in Settings>Battery>Battery Health?
If it's at 80% or below, the battery needs to be replaced. The system may be unstable when the battery reaches the end of its useful life.