Short answer
Update to iOS 27.0.1 — it fixed a freeze involving Control Center and Notification Center — then work through the list below.
A brand-new A20 Pro iPhone should never feel slow. When it does, the cause is almost always software.
10 things to try
- Update to iOS 27.0.1 or later.
- Give it 48 hours after setup for background indexing to finish.
- Update all apps — older versions may not be optimised for iOS 27.
- Restart the phone.
- Force-restart: press volume up, volume down, then hold the side button until the Apple logo appears.
- Free up storage — keep at least 10–15% free.
- Check Settings › Battery for an app hogging background power.
- Remove and re-add widgets that misbehave.
- Reset All Settings (Settings › General › Transfer or Reset iPhone › Reset) — this keeps your data.
- If freezes continue, back up and restore as a new phone, or contact Apple Support.
Sources
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