Software Update Readiness Checklist

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Quick checks

Check the official compatibility list.
Confirm a current backup.
Review work and banking app requirements.

Safe next steps

Install through the official updater.
Keep the phone charged and connected.
Record the installed build if a problem occurs.

What to verify

If these checks do not change the symptom, consult the manufacturer's support before a reset.

Sources & verification

Last checked: September 26, 2026. 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
Android 17 features and rollout ↗Google · 2026-09-26 · PH2-GOOGLE-ANDROID17