iPhone 13 vs iPhone 15
Published March 21, 2026 · Specs from Apple.com
Category Scorecard
Quick Verdict
The iPhone 15 is a meaningful upgrade from the iPhone 13 on nearly every front that matters. The jump from a 12MP to a 48MP main camera alone changes what's possible in low light and for cropping. Add USB-C (ending the Lightning era), Dynamic Island replacing the old notch, A16 Bionic chip, and built-in satellite connectivity — and the 15 is clearly the better phone. Both launched at $799, so if you're comparing used or refurbished prices, the 15 offers substantially more for similar money.
Size Comparison
Scaled at 1.2px per mm. iPhone 15 is 0.9mm taller, 0.1mm wider.
Full Specifications
| Spec | iPhone 13 | iPhone 15 |
|---|---|---|
| Launch year | 2021 | 2023 |
| Chip | A15 Bionic | A16 Bionic |
| Display | 6.1" OLED 60Hz | 6.1" OLED 60Hz |
| Brightness | 800 nits | 1000 nits |
| Notch style | Classic notch | Dynamic Island |
| Main camera | 12MP f/1.6 | 48MP f/1.6 |
| Telephoto zoom | None | 2x (in-sensor crop) |
| Battery (video) | 19 hrs | 20 hrs |
| Charging port | Lightning | USB-C |
| MagSafe | 15W | 15W |
Category Deep-Dives
Display
Both phones share a 6.1-inch OLED panel at 460 PPI and 60Hz — neither gets ProMotion. The iPhone 15 pulls ahead with 1000 nits peak brightness versus 800 nits on the 13, which makes outdoor reading noticeably easier. The bigger visible difference is the Dynamic Island on the iPhone 15, which replaces the classic pill-shaped notch with an interactive cutout that surfaces notifications, timers, and live activities in a more usable way.
Performance
The iPhone 15 runs the A16 Bionic with 6 CPU cores and a 5-core GPU; the iPhone 13 has the A15 Bionic with a 4-core GPU. In day-to-day use both phones feel fast, but the A16 handles video editing, machine learning tasks, and sustained load more efficiently. The extra GPU core in the A16 makes a tangible difference in gaming and computational photography workloads.
Camera
This is where the gap is widest. The iPhone 15 ships with a 48MP main sensor versus the 13's 12MP — that's four times the raw pixel count, enabling lossless 2x zoom via in-sensor cropping and dramatically improved low-light detail. Both have 12MP ultrawide cameras, but the 15 also gains a 2x telephoto option that the 13 entirely lacks. Video tops out at 4K/60fps on both, but the 15 benefits from the A16's improved ISP for better noise reduction.
Battery
Apple rates the iPhone 15 at 20 hours of video playback versus 19 hours for the iPhone 13 — a marginal improvement. Both support 20W wired charging and 15W MagSafe wireless. Neither phone supports fast MagSafe charging beyond 15W, and neither has always-on display. If battery life is your primary concern, neither model distinguishes itself dramatically from the other.
Design & Build
Both phones use an aluminum frame with glass back and carry IP68 water resistance. The iPhone 15 is marginally larger (147.6×71.6×7.8mm vs 146.7×71.5×7.65mm) and slightly lighter at 171g vs 174g. The most consequential design change is the switch from Lightning to USB-C on the 15, which means a single cable for laptops, accessories, and your phone. The 13 also lacks the satellite emergency SOS and Crash Detection features available on the 15.
Value
Both launched at $799. On the used market in 2026, the iPhone 13 sells for around $250–350 while the 15 commands $450–550. If you're buying new, the 15 is the only option — Apple no longer sells the 13 new. For refurbished buyers, the 15 offers a materially better camera, USB-C, and satellite connectivity for roughly $150–200 more, which is defensible given the scope of the upgrade.
Who Should Buy Which
Buy the iPhone 13 if…
- You find a refurbished unit under $250 and just need a reliable daily driver
- You already have a large Lightning accessory ecosystem you're not ready to replace
- Camera quality is not a priority for your use case
- You prefer the classic notch aesthetic
Buy the iPhone 15 if…
- You shoot a lot of photos and want 48MP detail and 2x zoom
- You want USB-C for universal charging and accessories
- You travel and want satellite emergency SOS as a safety net
- You want Dynamic Island and Crash Detection for daily life
Case Compatibility
iPhone 13 cases will NOT fit iPhone 15. The camera module design changed significantly between the 2021 and 2023 generations. The iPhone 15 is also 0.9mm taller, 0.1mm wider, and 0.15mm thicker. If you're upgrading, budget for new cases — none of your existing iPhone 13 cases will transfer.
Frequently Asked Questions
Is upgrading from iPhone 13 to iPhone 15 worth it?
Yes, for most users. The iPhone 15 brings a 48MP main camera (vs 12MP on the 13), USB-C instead of Lightning, Dynamic Island replacing the notch, satellite connectivity, and the A16 Bionic chip. If you use your camera heavily or want USB-C accessories, the upgrade is meaningful and justified.
Will iPhone 13 cases fit iPhone 15?
No. The camera module changed significantly between 2021 and 2023, so iPhone 13 cases will not fit the iPhone 15. The 15 is also 0.9mm taller, 0.1mm wider, and 0.15mm thicker — button cutouts and camera openings will be misaligned.
What chip does the iPhone 15 have compared to iPhone 13?
The iPhone 15 uses the A16 Bionic with a 5-core GPU, while the iPhone 13 uses the A15 Bionic with a 4-core GPU. The A16 is roughly 20–25% faster in GPU tasks and handles the 48MP camera's computational workloads more efficiently than the A15 could manage.