Which has the bigger battery, the Samsung Galaxy S24 or the Samsung Galaxy S25 Ultra?

The Samsung Galaxy S25 Ultra has the bigger battery: 5,000 mAh against 4,000 mAh. Real battery life also depends on the chip and screen.

Which gets software updates for longer?

The Samsung Galaxy S25 Ultra: its maker promises OS updates until around February 2032, against January 2031 for the Samsung Galaxy S24.

Samsung Galaxy S24 vs Samsung Galaxy S25 Ultra

Which should you buy?

Pick the Samsung Galaxy S24 for

Lighter: 168 g vs 218 g (50 g less)
Thinner: 7.6 mm vs 8.2 mm
More compact: 15.8 mm shorter

Pick the Samsung Galaxy S25 Ultra for

Bigger battery: 5,000 vs 4,000 mAh (25% more)
Faster wired charging: 45 W vs 25 W
Bigger screen: 6.9" vs 6.2"
Higher-resolution main camera: 200 MP vs 50 MP
Longer optical zoom: 5× vs 3×
OS updates for longer, until Feb 2032
More RAM: up to 16 GB vs 12 GB
More storage: up to 1 TB vs 512 GB
Newer: launched February 2025

Size comparison

The Samsung Galaxy S24 is 15.8 mm shorter, 7 mm narrower, 0.6 mm thinner and 50 g lighter than the Samsung Galaxy S25 Ultra. Its screen is 0.7" smaller.

Samsung Galaxy S24147 × 70.6 × 7.6 mm
Samsung Galaxy S25 Ultra162.8 × 77.6 × 8.2 mm

Specs side by side

Launch	Samsung Galaxy S24	Samsung Galaxy S25 Ultra
Announced	January 17, 20241	January 22, 20251
Released	January 31, 20241	February 7, 20251
Launch price	—	$1,3001

Body	Samsung Galaxy S24	Samsung Galaxy S25 Ultra
Size	147 × 70.6 × 7.6 mm	162.8 × 77.6 × 8.2 mm
Thickness	7.6 mm (better)	8.2 mm
Weight	168 g (better)	218 g
Frame	aluminum	Titanium
Back	matte glass1	—
Water resistance	IP681	IP68
Colours	Cobalt Violet, Amber Yellow, Onyx Black, Marble Gray	Titanium Silverblue, Titanium Black, Titanium Whitesilver, Titanium Gray, Titanium Jadegreen, Titanium Jetblack, Titanium Pinkgold1

Display	Samsung Galaxy S24	Samsung Galaxy S25 Ultra
Size	6.2"	6.9"
Type	Dynamic AMOLED 2X	Dynamic LTPO AMOLED 2X
Resolution	1080 × 23401	1440 × 3120 (better)
Refresh rate	120 Hz	120 Hz
Peak brightness	2,600 nits	2,600 nits
Protection	Corning Gorilla Glass Victus 21	Corning Gorilla Armor 2

Performance and software	Samsung Galaxy S24	Samsung Galaxy S25 Ultra
Chipset	Samsung Exynos 2400 (worldwide); Qualcomm Snapdragon 8 Gen 3 (North America, East Asia)	Snapdragon 8 Elite Mobile Platform for Galaxy
CPU	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	2x 4.47 GHz Oryon (Phoenix L) and 6x 3.53 GHz Oryon (Phoenix M)1
Process	4 nm1	3 nm1 (better)
Ships with	Android 14 with One UI 6.11	One UI 7
OS updates	7 years (to Jan 2031)1	7 years (to Feb 2032) (better)
Security updates	7 years (to Jan 2031)1	7 years (to Feb 2032) (better)

Memory	Samsung Galaxy S24	Samsung Galaxy S25 Ultra
RAM	8 GB / 12 GB	12 GB / 16 GB (better)
Storage	128 GB / 256 GB / 512 GB	256 GB / 512 GB / 1 TB (better)
Card slot	—	No1

Cameras	Samsung Galaxy S24	Samsung Galaxy S25 Ultra
Rear	50 MP Main, OIS 10 MP Telephoto (3× optical) 12 MP Ultrawide	200 MP Main 50 MP Ultrawide 50 MP Telephoto (5× optical) 10 MP Telephoto (3× optical)
Main camera	50 MP	200 MP (better)
Optical zoom	3×	5× (better)
Front	12 MP	12 MP
Video	—	8K at 30 fps

Battery	Samsung Galaxy S24	Samsung Galaxy S25 Ultra
Capacity	4,000 mAh1	5,000 mAh (better)
Wired charging	25 W	45 W (better)
Wireless charging	15 W	15 W1
Reverse wireless	Yes1	Yes

Connectivity	Samsung Galaxy S24	Samsung Galaxy S25 Ultra
5G	Yes1	Yes
Wi-Fi	Wi-Fi 6E1	Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be tri-band)
Bluetooth	5.31	5.41
NFC	Yes1	Yes1
USB	USB-C 3.2 (5Gbps)1	USB Type-C 3.2 (5Gbps)
Headphone jack	—	No1
eSIM	Yes1	Yes1

Features	Samsung Galaxy S24	Samsung Galaxy S25 Ultra
Fingerprint	ultrasonic under-display1	Ultrasonic under-display
Stereo speakers	Yes1	Yes1
Stylus	—	Yes

Highlighted: the better value where one is clearly better. Sources for each phone are listed on the Samsung Galaxy S24 and Samsung Galaxy S25 Ultra pages.

Quick answers

Is the Samsung Galaxy S24 bigger than the Samsung Galaxy S25 Ultra?: The Samsung Galaxy S24 is 15.8 mm shorter, 7 mm narrower, 0.6 mm thinner and 50 g lighter than the Samsung Galaxy S25 Ultra. Its screen is 0.7" smaller.
Which has the bigger battery, the Samsung Galaxy S24 or the Samsung Galaxy S25 Ultra?: The Samsung Galaxy S25 Ultra has the bigger battery: 5,000 mAh against 4,000 mAh. Real battery life also depends on the chip and screen.
Which gets software updates for longer?: The Samsung Galaxy S25 Ultra: its maker promises OS updates until around February 2032, against January 2031 for the Samsung Galaxy S24.