Which has the bigger battery, the Apple iPhone 15 or the Samsung Galaxy S24?

The Samsung Galaxy S24 has the bigger battery: 4,000 mAh against 3,349 mAh. Real battery life also depends on the chip and screen.

Which gets software updates for longer?

The Samsung Galaxy S24: its maker promises OS updates until around January 2031, against September 2028 for the Apple iPhone 15.

No clear advantage on the specs we have.

The Apple iPhone 15 is 0.6 mm taller, 1 mm wider, 0.2 mm thicker and 3 g heavier than the Samsung Galaxy S24. Its screen is 0.1" smaller.

Body	Apple iPhone 15	Samsung Galaxy S24
Size	147.6 × 71.6 × 7.8 mm	147 × 70.6 × 7.6 mm
Thickness	7.8 mm	7.6 mm
Weight	171 g	168 g (better)
Frame	Aluminum	aluminum
Back	Color-infused glass	matte glass1
Water resistance	IP68	IP681
Colours	Black, Blue, Green, Yellow, Pink	Cobalt Violet, Amber Yellow, Onyx Black, Marble Gray

Display	Apple iPhone 15	Samsung Galaxy S24
Size	6.1"	6.2"
Type	Super Retina XDR OLED	Dynamic AMOLED 2X
Resolution	1179 × 2556 (better)	1080 × 23401
Refresh rate	60 Hz	120 Hz (better)
Peak brightness	2,000 nits	2,600 nits (better)
Protection	Ceramic Shield	Corning Gorilla Glass Victus 21

Performance and software	Apple iPhone 15	Samsung Galaxy S24
Chipset	A16 Bionic	Samsung Exynos 2400 (worldwide); Qualcomm Snapdragon 8 Gen 3 (North America, East Asia)
CPU	6-core CPU with 2 performance and 4 efficiency cores	Exynos: Deca-core (1x3.2GHz Cortex-X4 & 2x2.9GHz Cortex-A720 & 3x2.6GHz Cortex-A720 & 4x1.95GHz Cortex-A520); Snapdragon: Octa-core (1x3.3 GHz Cortex-X4 & 5x3.2 GHz Cortex-A720 & 2x2.3 GHz Cortex-A520)1
Process	4 nm1	4 nm1
Ships with	iOS	Android 14 with One UI 6.11
OS updates	5 years (to Sep 2028)1	7 years (to Jan 2031)1 (better)
Security updates	—	7 years (to Jan 2031)1

Cameras	Apple iPhone 15	Samsung Galaxy S24
Rear	48 MP Main, OIS 12 MP Ultrawide	50 MP Main, OIS 10 MP Telephoto (3× optical) 12 MP Ultrawide
Main camera	48 MP	50 MP
Optical zoom	None	3× (better)
Front	12 MP	12 MP
Video	4K Dolby Vision at 60 fps	—

Connectivity	Apple iPhone 15	Samsung Galaxy S24
5G	Yes	Yes1
Wi-Fi	Wi-Fi 6 (802.11ax) with 2x2 MIMO	Wi-Fi 6E1
Bluetooth	5.3	5.31
NFC	Yes	Yes1
USB	USB-C with USB 2 (up to 480Mb/s) and DisplayPort	USB-C 3.2 (5Gbps)1
Headphone jack	No1	—
eSIM	Yes	Yes1
Satellite messaging	Yes	—

Features	Apple iPhone 15	Samsung Galaxy S24
Fingerprint	—	ultrasonic under-display1
Stereo speakers	—	Yes1

Highlighted: the better value where one is clearly better. Sources for each phone are listed on the Apple iPhone 15 and Samsung Galaxy S24 pages.

Is the Apple iPhone 15 bigger than the Samsung Galaxy S24?: The Apple iPhone 15 is 0.6 mm taller, 1 mm wider, 0.2 mm thicker and 3 g heavier than the Samsung Galaxy S24. Its screen is 0.1" smaller.
Which has the bigger battery, the Apple iPhone 15 or the Samsung Galaxy S24?: The Samsung Galaxy S24 has the bigger battery: 4,000 mAh against 3,349 mAh. Real battery life also depends on the chip and screen.
Which gets software updates for longer?: The Samsung Galaxy S24: its maker promises OS updates until around January 2031, against September 2028 for the Apple iPhone 15.