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Samsung Galaxy S25 Ultra vs Samsung Galaxy Z Flip6

The Samsung Galaxy S25 Ultra comes out ahead on 11 counts and the Samsung Galaxy Z Flip6 on 2.

Which should you buy?

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
  • Thinner folded: 8.2 mm vs 14.9 mm
  • Bigger main screen: 6.9" vs 6.7"
  • Higher-resolution main camera: 200 MP vs 50 MP
  • Optical zoom (5×), which the other lacks
  • 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
  • Better water resistance: IP68 vs IP48
  • Newer: launched February 2025

Pick the Samsung Galaxy Z Flip6 for

  • Lighter: 187 g vs 218 g (31 g less)
  • More compact folded: 77.7 mm shorter

Size comparison

Folded, the Samsung Galaxy S25 Ultra is 77.7 mm taller, 5.7 mm wider, 6.7 mm thinner and 31 g heavier than the Samsung Galaxy Z Flip6. Its main screen is 0.2" larger. Unfolded, the Samsung Galaxy Z Flip6 opens to 165.1 × 71.9 mm and 6.9 mm thick.

  • Samsung Galaxy S25 Ultra162.8 × 77.6 × 8.2 mm
  • Samsung Galaxy Z Flip685.1 × 71.9 × 14.9 mm folded

Specs side by side

LaunchSamsung Galaxy S25 UltraSamsung Galaxy Z Flip6
AnnouncedJanuary 22, 20251July 10, 20241
ReleasedFebruary 7, 20251July 31, 20241
Launch price$1,3001—
BodySamsung Galaxy S25 UltraSamsung Galaxy Z Flip6
Size162.8 × 77.6 × 8.2 mm85.1 × 71.9 × 14.9 mm folded1
Unfolded size—165.1 × 71.9 × 6.9 mm1
Thickness8.2 mm (better)14.9 mm folded, 6.9 mm open1
Weight218 g187 g1 (better)
FrameTitaniumMatte aluminum1
Water resistanceIP68 (better)IP48
ColoursTitanium Silverblue, Titanium Black, Titanium Whitesilver, Titanium Gray, Titanium Jadegreen, Titanium Jetblack, Titanium Pinkgold1Yellow, Silver Shadow, Mint, Blue, Crafted Black, White, Peach1
DisplaySamsung Galaxy S25 UltraSamsung Galaxy Z Flip6
Size6.9"6.7"
Cover screen—3.4"
TypeDynamic LTPO AMOLED 2XDynamic LTPO AMOLED 2X
Resolution1440 × 3120 (better)1080 × 2640
Refresh rate120 Hz120 Hz
Peak brightness2,600 nits2,600 nits
ProtectionCorning Gorilla Armor 2Ultra Thin Glass (UTG) inner; Corning Gorilla Glass Victus 2 cover1
Performance and softwareSamsung Galaxy S25 UltraSamsung Galaxy Z Flip6
ChipsetSnapdragon 8 Elite Mobile Platform for GalaxyQualcomm Snapdragon 8 Gen 3 for Galaxy
CPU2x 4.47 GHz Oryon (Phoenix L) and 6x 3.53 GHz Oryon (Phoenix M)1Octa-core (1×3.3 GHz Cortex-X4 & 3×3.2 GHz Cortex-A720 & 2×3.0 GHz Cortex-A720 & 2×2.3 GHz Cortex-A520)
Process3 nm1 (better)4 nm
Ships withOne UI 7Android 14 with One UI 6.1.1
OS updates7 years (to Feb 2032) (better)7 years (to Jul 2031)1
Security updates7 years (to Feb 2032) (better)7 years (to Jul 2031)1
MemorySamsung Galaxy S25 UltraSamsung Galaxy Z Flip6
RAM12 GB / 16 GB (better)12 GB
Storage256 GB / 512 GB / 1 TB (better)256 GB / 512 GB
Card slotNo1No1
CamerasSamsung Galaxy S25 UltraSamsung Galaxy Z Flip6
Rear200 MP Main 50 MP Ultrawide 50 MP Telephoto (5× optical) 10 MP Telephoto (3× optical)50 MP Main, OIS 12 MP Ultrawide
Main camera200 MP (better)50 MP
Optical zoom5× (better)None
Front12 MP10 MP
Video8K at 30 fps4K@60fps
BatterySamsung Galaxy S25 UltraSamsung Galaxy Z Flip6
Capacity5,000 mAh (better)4,000 mAh
Wired charging45 W (better)25 W1
Wireless charging15 W115 W1
Reverse wirelessYesYes1
ConnectivitySamsung Galaxy S25 UltraSamsung Galaxy Z Flip6
5GYesYes
Wi-FiWi-Fi 7 (802.11 a/b/g/n/ac/ax/be tri-band)Wi-Fi 802.11 a/b/g/n/ac/6e, tri-band, Wi-Fi Direct
Bluetooth5.41Bluetooth 5.3
NFCYes1Yes1
USBUSB Type-C 3.2 (5Gbps)USB Type-C 3.2, OTG
Headphone jackNo1No1
eSIMYes1Yes
FeaturesSamsung Galaxy S25 UltraSamsung Galaxy Z Flip6
FingerprintUltrasonic under-displaySide-mounted1
Stereo speakersYes1Yes
StylusYes—

Highlighted: the better value where one is clearly better. Sources for each phone are listed on the Samsung Galaxy S25 Ultra and Samsung Galaxy Z Flip6 pages.

Quick answers

Is the Samsung Galaxy S25 Ultra bigger than the Samsung Galaxy Z Flip6?
Folded, the Samsung Galaxy S25 Ultra is 77.7 mm taller, 5.7 mm wider, 6.7 mm thinner and 31 g heavier than the Samsung Galaxy Z Flip6. Its main screen is 0.2" larger. Unfolded, the Samsung Galaxy Z Flip6 opens to 165.1 × 71.9 mm and 6.9 mm thick.
Which has the bigger battery, the Samsung Galaxy S25 Ultra or the Samsung Galaxy Z Flip6?
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 July 2031 for the Samsung Galaxy Z Flip6.

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