Quick checks
- Confirm the model on Apple's compatibility list.
- Check free storage, power and connection.
- Review banking/work app requirements.
Safe next steps
- Create and verify a recent backup.
- Install from the phone's official Software Update screen.
- If the update fails, use Apple's support guidance before considering a restore.
What to verify
- If these checks do not change the symptom, consult the manufacturer's support before a reset.
Sources & verification
Last checked: . Official guidance is the primary source. Steps can differ by model, carrier and software version.
- iOS 27 compatibility ↗Apple · 2026-09-26 · PH2-APPLE-IOS27
- Major updates for Apple's software platforms are now available ↗Apple Newsroom · 2026-09-26 · PH2-APPLE-IOS27-RELEASE