iOS 27 — which iPhones stay supported? Full compatibility list

Short answer: iOS 27 downloaded on September 14, 2026. Every iPhone from iPhone 11 (2019) upward stays supported — 33 models, zero drops. The catch is AI features — Siri AI and Apple Intelligence need iPhone 15 Pro and up. Older models update but get no AI.

1. The full iOS 27 supported list

Apple surprised everyone — rumors said the iPhone 11 would be cut, but the list is pixel-identical to iOS 26:

• iPhone 18 / Duo: 18 Pro, 18 Pro Max, iPhone Duo (first foldable)
• iPhone 17: 17, 17e, 17 Pro, 17 Pro Max, iPhone Air
• iPhone 16: 16, 16 Plus, 16 Pro, 16 Pro Max, 16e
• iPhone 15: 15, 15 Plus, 15 Pro, 15 Pro Max
• iPhone 14: 14, 14 Plus, 14 Pro, 14 Pro Max
• iPhone 13: 13, 13 mini, 13 Pro, 13 Pro Max
• iPhone 12: 12, 12 mini, 12 Pro, 12 Pro Max
• iPhone 11: 11, 11 Pro, 11 Pro Max
• iPhone SE: 2nd and 3rd generation

The floor is the A13 chip and up. Models dropped back in iOS 26 (XS, XR) stay out.

2. Updating is not the same as getting AI

The most confused point — three tiers:

• Can install iOS 27: iPhone 11 and up (33 models)
• Gets Siri AI / Apple Intelligence: iPhone 15 Pro and up (A17 Pro chip + 8GB RAM and up)
• Heavy AI (full on-device model, custom Siri voices): iPhone 17 Pro, iPhone Air and up

iPhone 15 / 15 Plus update fine but get no AI — Pro and up only

If your reason for holding an iPhone 12–14 is "want to try Siri AI", updating won't help — only a new device will. Check your old phone's price first.

3. Apple Watch got hit far harder

The'Overshadowed headline: watchOS 27 makes the deepest cut in Watch history:

• Apple Watch Series 6, 7, 8 — all out
• Apple Watch SE 2nd gen — out
• Apple Watch Ultra 1st gen — out (only ~3.5 years old)

This hits second-hand prices directly — watches that lose updates usually fall faster after launch events. On a Series 7/8 or Ultra 1 and thinking of switching, check the buyback price before the market reprices.

4. iPhone 18 Pro + iPhone Duo launched — how does that move market prices?

At the September 9 event Apple launched the iPhone 18 Pro and the iPhone Duo (first foldable) together. Every new launch reprices older second-hand models across the board — especially direct predecessors like the 17 Pro and 16 Pro.

5. Checklist before tapping Update on iOS 27

1. Back up first (iCloud or computer) against a stuck update
2. Battery above 50% or stay plugged in while updating
3. Free 8–10GB of space
4. Check banking/work apps support the new version yet
5. Selling after updating? Erase the right way before handover

Know where you stand — find out what your phone still fetches with a 30-second check. Just model and condition.

Preliminary estimate — final price depends on actual condition.

Sources