Which has the bigger battery, the Apple iPhone 15 or the Apple iPhone 16?

The Apple iPhone 16 has the bigger battery: 3,561 mAh against 3,349 mAh. Real battery life also depends on the chip and screen.

Apple iPhone 15 vs Apple iPhone 16

No clear advantage on the specs we have.

The Apple iPhone 15 and Apple iPhone 16 are practically the same size.

Body	Apple iPhone 15	Apple iPhone 16
Size	147.6 × 71.6 × 7.8 mm	147.6 × 71.6 × 7.8 mm
Thickness	7.8 mm	7.8 mm
Weight	171 g	170 g
Frame	Aluminum	Aluminum
Back	Color-infused glass	Color-infused glass
Water resistance	IP68	IP68
Colours	Black, Blue, Green, Yellow, Pink	Black, White, Pink, Teal, Ultramarine

Performance and software	Apple iPhone 15	Apple iPhone 16
Chipset	A16 Bionic	A18
CPU	6-core CPU with 2 performance and 4 efficiency cores	6-core CPU with 2 performance and 4 efficiency cores
Process	4 nm1	—
Ships with	iOS	iOS
OS updates	5 years (to Sep 2028)1	—

Connectivity	Apple iPhone 15	Apple iPhone 16
5G	Yes	Yes
Wi-Fi	Wi-Fi 6 (802.11ax) with 2x2 MIMO	Wi-Fi 7 (802.11be) with 2x2 MIMO
Bluetooth	5.3	5.3
NFC	Yes	Yes
USB	USB-C with USB 2 (up to 480Mb/s) and DisplayPort	USB-C, USB 2 (up to 480Mb/s)
Headphone jack	No1	No1
eSIM	Yes	Yes
Satellite messaging	Yes	Yes

Features	Apple iPhone 15	Apple iPhone 16
Fingerprint	—	None (Face ID)1
Stereo speakers	—	Yes

Highlighted: the better value where one is clearly better. Sources for each phone are listed on the Apple iPhone 15 and Apple iPhone 16 pages.

Is the Apple iPhone 15 bigger than the Apple iPhone 16?: The Apple iPhone 15 and Apple iPhone 16 are practically the same size.
Which has the bigger battery, the Apple iPhone 15 or the Apple iPhone 16?: The Apple iPhone 16 has the bigger battery: 3,561 mAh against 3,349 mAh. Real battery life also depends on the chip and screen.