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WhichPhoneToBuy

Samsung Galaxy S25 vs Xiaomi 15

The Xiaomi 15 comes out ahead on 6 counts and the Samsung Galaxy S25 on 5.

Which should you buy?

Pick the Samsung Galaxy S25 for

  • Lighter: 162 g vs 191 g (29 g less)
  • Thinner: 7.2 mm vs 8.1 mm
  • More compact: 5.4 mm shorter
  • Optical zoom (3×), which the other lacks
  • Newer: launched February 2025

Pick the Xiaomi 15 for

  • Bigger battery: 5,240 vs 4,000 mAh (31% more)
  • Faster wired charging: 90 W vs 25 W
  • Faster wireless charging: 50 W vs 15 W
  • Brighter display: 3,200 vs 2,600 nits peak
  • More RAM: up to 16 GB vs 12 GB
  • More storage: up to 1 TB vs 512 GB

Size comparison

The Samsung Galaxy S25 is 5.4 mm shorter, 0.7 mm narrower, 0.9 mm thinner and 29 g lighter than the Xiaomi 15. Its screen is 0.16" smaller.

  • Samsung Galaxy S25146.9 × 70.5 × 7.2 mm
  • Xiaomi 15152.3 × 71.2 × 8.08 mm

Specs side by side

LaunchSamsung Galaxy S25Xiaomi 15
AnnouncedJanuary 22, 20251October 29, 20241
ReleasedFebruary 7, 20251October 29, 20241
BodySamsung Galaxy S25Xiaomi 15
Size146.9 × 70.5 × 7.2 mm1152.3 × 71.2 × 8.1 mm
Thickness7.2 mm1 (better)8.1 mm
Weight162 g1 (better)191 g?
Frame—aviation-grade aluminum1
Water resistanceIP681IP68
ColoursIcyblue, Mint, Navy, Silver Shadow, Pinkgold, Coralred, Blueblack1Liquid Silver, White, Black, Green
DisplaySamsung Galaxy S25Xiaomi 15
Size6.2"6.36"
TypeDynamic LTPO AMOLED 2XCrystalRes AMOLED
Resolution1080 × 234011200 × 2670 (better)
Refresh rate120 Hz1120 Hz
Peak brightness2,600 nits13,200 nits (better)
ProtectionGorilla Glass Victus 21—
Performance and softwareSamsung Galaxy S25Xiaomi 15
ChipsetQualcomm Snapdragon 8 Elite For Galaxy1Snapdragon 8 Elite Mobile Platform
CPU2x 4.47 GHz Oryon (Phoenix L) and 6x 3.53 GHz Oryon (Phoenix M)12 x Prime Core up to 4.32GHz, 6 x Performance Core up to 3.53GHz
Process3 nm13 nm
Ships withAndroid 15 with One UI 71Xiaomi HyperOS 2
OS updates7 years (to Feb 2032)1—
Security updates7 years (to Feb 2032)1—
MemorySamsung Galaxy S25Xiaomi 15
RAM12 GB18 GB / 12 GB / 16 GB (better)
Storage128 GB / 256 GB / 512 GB256 GB / 512 GB / 1 TB (better)
CamerasSamsung Galaxy S25Xiaomi 15
Rear50 MP Main, OIS 12 MP Ultrawide 10 MP Telephoto (3× optical), OIS50 MP Main 50 MP Telephoto 50 MP Ultrawide
Main camera50 MP50 MP
Optical zoom3× (better)None
Front12 MP132 MP
Video8K at 30 fps18K (7680x4320) at 24/30fps
BatterySamsung Galaxy S25Xiaomi 15
Capacity4,000 mAh15,240 mAh (better)
Wired charging25 W190 W (better)
Wireless charging15 W150 W (better)
Reverse wirelessYes1—
ConnectivitySamsung Galaxy S25Xiaomi 15
5GYes1Yes1
Wi-FiWi-Fi 71Wi-Fi 7
Bluetooth5.416.0
NFCYes1Yes
USBUSB Type-C 3.21USB Type-C
eSIMYes1Yes
FeaturesSamsung Galaxy S25Xiaomi 15
FingerprintUltrasonic under-display1Ultrasonic in-screen
Stereo speakersYes1Yes

Highlighted: the better value where one is clearly better. Sources for each phone are listed on the Samsung Galaxy S25 and Xiaomi 15 pages.

Quick answers

Is the Samsung Galaxy S25 bigger than the Xiaomi 15?
The Samsung Galaxy S25 is 5.4 mm shorter, 0.7 mm narrower, 0.9 mm thinner and 29 g lighter than the Xiaomi 15. Its screen is 0.16" smaller.
Which has the bigger battery, the Samsung Galaxy S25 or the Xiaomi 15?
The Xiaomi 15 has the bigger battery: 5,240 mAh against 4,000 mAh. Real battery life also depends on the chip and screen.

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