User level: Level 1 (4 points)17 pro max after update new software running very slow
[Re-Titled by Moderator]
Original Title: Slow iPhone
Posted on Oct 13, 2026 10:01 PM
User level: Level 10 (97,882 points)Oct 14, 2026 2:32 AM in response to Anupaggarwal
Welcome and thank you for reaching out. 🤗
A rapid battery drain after updating to iOS 27.0.1 and slowdown can happen while the system reindexes and optimizes in the background, usually taking a day or two.
According to Apple: If you notice that your battery life has decreased after updating your device, wait a few days and then check again. Even though you can use your device immediately after an update, certain tasks related to the update continue in the background and might affect battery life and thermal performance. While they're ongoing, you might see the Insight Ongoing iOS Update in Settings ➢ Battery.
If you need more help, contact Apple Support directly.
Take care!
Smiliñ 😎 Brian | Community Volunteer
User level: Level 10 (107,674 points)Oct 13, 2026 11:37 PM in response to Anupaggarwal
If you have a VPN then uninstall it and try again.
Originally posted at discussions.apple.com/thread/256375853