iPhone 15 vs iPhone 16: Is It Worth Upgrading?

The iPhone 16 is a solid phone. So is the iPhone 15. And that's exactly the problem: if you already own the 15, the 16 is a hard sell. Apple's improvements are real but incremental, and at $799 for the base model, the cost of upgrading a one-year-old phone is steep. This guide breaks down what's actually different — and who should (and shouldn't) upgrade.

For the full spec-by-spec breakdown, see our iPhone 15 vs iPhone 16 comparison page.

What changed

Chip: A16 Bionic → A18. The A18 is meaningfully faster, with better GPU performance and — more importantly — it's the chip that enables Apple Intelligence features. If you want the full AI suite (writing tools, image generation, Siri upgrades), you need an A18 or newer. The iPhone 15's A16 Bionic gets a stripped-down version of Apple Intelligence.

Camera: same main sensor, better processing. The iPhone 16 keeps the 48MP main sensor and adds a new photonic engine for better low-light processing. The results are visible in challenging light but nearly identical in daylight. The bigger camera change is the new Camera Control button on the side — a hardware shortcut for launching the camera and adjusting settings.

Design: new colors, Action Button. The iPhone 16 gets the Action Button (previously Pro-only), a slightly different color lineup, and vertical camera alignment instead of diagonal. The overall design language is very similar.

Battery: marginally better. Apple claims longer battery life for the 16, but real-world tests show about 30-60 minutes more screen-on time. Not nothing, but not a reason to upgrade.

Display: identical. Both are 6.1-inch Super Retina XDR OLED at 60Hz. No ProMotion, no always-on display. This is the biggest missed opportunity.

Who should upgrade

• iPhone 14 or older owners. The jump from 14 to 16 is two generations and genuinely meaningful: USB-C, 48MP camera, the Action Button, and Apple Intelligence.
• Anyone who wants Apple Intelligence fully featured. The A18 chip runs the full AI suite; the A16 does not.
• Trade-in buyers getting $400+ for their iPhone 15. If your carrier is offering a generous trade-in deal, the effective upgrade cost might be low enough to justify.

Who should skip

• iPhone 15 owners who are happy with their phone. The camera improvement is incremental. The chip difference only matters for AI features. The display is identical. If your 15 works fine, keep it another year.
• Anyone waiting for 120Hz. The standard iPhone 16 still uses a 60Hz display. If ProMotion matters to you, look at the iPhone 16 Pro instead.

The smarter play

If you're buying new today, the iPhone 16 at $799 is obviously the pick over the iPhone 15 (which Apple still sells at $699). The $100 difference gets you the A18 chip and full Apple Intelligence — that's worth it.

But if you already own a 15 and are considering upgrading, save your money. The iPhone 17 is the one to watch — rumored to finally bring ProMotion to the standard model and ship with a major design refresh.

See how both phones compare to the competition: iPhone 16 vs Galaxy S25, iPhone 16 vs Pixel 9.