Samsung Galaxy S25 Ultra vs. Samsung Galaxy S21 Ultra (SD888)

Samsung Galaxy S25 Ultra
  • 6.8" (3120x1440) AMOLED
  • 12GB/16GB
    Snapdragon 8 Elite for Galaxy SoC     256GB/512GB/1024GB Storage
  • 200-MP, f/1.7, OIS 4 Rear Cameras
  • 5000 mAh W-Charge
Galaxy S25 Ultra
News (2)
Samsung Galaxy S21 Ultra (SD888)
  • 6.8" (3200x1440) AMOLED
  • 12GB/16GB
    Snapdragon 888 SoC     128GB/256GB/512GB Storage
  • 108-MP, f/1.8 4 Rear Cameras
    CAMERA HW score: 201
  • 5000 mAh W-Charge
Galaxy S21 Ultra (SD888)
News (2)
Galaxy S21 Ultra (SD888) Price
$1199. Search

Specifications Highlights
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
ProductGalaxy S25 UltraGalaxy S21 Ultra (SD888) (Launched 2021-01-14)
Display6.8" 3120x1440 AMOLED 6.8" 3200x1440 AMOLED
Rear Camera(s)
  • 23mm 200-MP f/1.7 (Primary) +OIS
  • 13mm 50-MP f/1.9
  • 69mm 10-MP f/2.4 +OIS
  • 115mm 50-MP f/3.4 +OIS
  • 24mm 108-MP f/1.8 (Primary)
  • 13mm 12-MP f/2.2
  • 72mm 10-MP f/2.4
  • 240mm 10-MP f/4.9
Selfie Camera(s)
  • 25mm 12-MP f/2.2
  • 40-MP f/2.2
Computing
  • Snapdragon 8 Elite for Galaxy SoC
  • 12GB/16GB RAM
  • 256GB/512GB/1024GB Storage
  • Snapdragon 888 SoC
  • 12GB/16GB RAM
  • 128GB/256GB/512GB Storage
Battery5000 mAh, Wireless Charging5000 mAh, Wireless Charging,
DesignIP68, 218g (7.7oz), 77.6x162.8x8.2 mm (3.06 x 6.41 x 0.32 inches)IP68, 229g (8.1oz), 75.6x165.1x8.9 mm (2.98 x 6.50 x 0.35 inches)
Price (Market)$1199
Price at Launch$1199.99
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Display
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
TypeAMOLEDAMOLED
display_refresh_Ühz_Ünum1120
Diagonal (inches)6.8"6.8"
Display/Body Ratio89.8%89.4%
Resolution3120x14403200x1440
Sharpness (PPI)505 PPI516 PPI
Brightness (specs)2600 NITs1600 NITs
Display Glass TypeGorilla Glass
Features
  • Multitouch
  • Glossy
  • Always-On
  • HDR
  • Multitouch
  • Glossy
  • Always-On
  • HDR
Color Depth24 bit (16,777,216 Colors)24 bit (16,777,216 Colors)
Primary Camera
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
Megapixel200-MP108-MP
Aperturef/1.7f/1.8
Focal Length (35mm) 23mm24mm
Sensor SizeEnormousEnormous
Autofocus Features
  • Phase Detection
  • Phase Detection
  • Laser-Assisted
Hardware Features
  • Autofocus
  • Nona Bayer
  • OIS
  • Autofocus
  • Nona Bayer
Video Resolutions
  • 1080p/120fps
  • 1080p/240fps
  • 2160p/120fps
  • 4320p/30fps
  • 4320p/24fps
Short-Zoom Camera
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
Megapixel10-MP10-MP
Aperturef/2.4f/2.4
Focal Length (35mm) 69mm72mm
Sensor SizeSmallSmall
Autofocus Features
  • Phase Detection
  • Dual-Pixel Phase Detection
Hardware Features
  • OIS
Long-Zoom Camera
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
Megapixel50-MP10-MP
Aperturef/3.4f/4.9
Focal Length (35mm) 115mm240mm
Sensor SizeSmallSmall
Autofocus Features
  • Phase Detection
  • Dual-Pixel Phase Detection
Hardware Features
  • OIS
Ultrawide Camera
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
Megapixel50-MP12-MP
Aperturef/1.9f/2.2
Focal Length (35mm) 13mm13mm
Sensor SizeSmallSmall
Autofocus Features
  • Phase Detection
Battery
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
Battery TypeLi-IonLi-Poly
Battery Capacity (mAh)5000 mAh5000 mAh
Battery Features
  • Wireless Charging Integrated
  • Fast Charge
  • Non-Removable
  • Qi
  • PMA
  • USB PD
  • Wireless Charging Integrated
  • Fast Charge
  • Non-Removable
  • Qi
  • PMA
  • Wireless Reverse Charging
  • USB PD
Computing
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
Processor BrandQualcommQualcomm
Processor NameSnapdragon 8 Elite for GalaxySnapdragon 888
Processor ModelSM8750-AC
Processor # Cores88
Main Processor Frequency (GHz)4.47 GHz2.84 GHz
RAM Options12GB/16GB12GB/16GB
Internal Storage Options256GB/512GB/1024GB128GB/256GB/512GB
Operating System + VersionAndroid 15Android 11
Communications
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
LTE Category (Download)LTE CAT20 2.0 Gbps/316 Mbps
LTE Bands1, 12, 13, 17, 2, 20, 28, 3, 34, 38, 39, 4, 40, 41, 5, 7, 81, 12, 13, 17, 2, 20, 28, 3, 34, 38, 39, 4, 40, 41, 5, 7, 8
Modem Features
  • UMTS
  • EDGE
  • GPRS
  • HSPA+
  • LTE
  • 5G SA
  • 5G NSA
  • UMTS
  • EDGE
  • GPRS
  • HSPA+
  • LTE
  • 5G NSA
  • 5G SA
WiFi Speed
  • a
  • b
  • g
  • n
  • ac
  • 6e
  • 7
  • a
  • b
  • g
  • n
  • ac
WiFi Features
  • WiFi Direct
  • Hotspot
  • Dual-band
  • Hotspot
  • WiFi Direct
Bluetooth VersionBluetooth 5.4Bluetooth 5.2
Bluetooth Features
  • A2DP
  • AVRCP
  • DIP
  • HFP
  • HID
  • HSP
  • BT LE
  • MAP
  • OPP
  • PAN
  • PBAP/PAB
  • A2DP
  • AVRCP
  • DIP
  • HFP
  • HID
  • HSP
  • BT LE
  • MAP
  • OPP
  • PAN
  • PBAP/PAB
NFC Features
  • NFC Supported
  • NFC Supported
Connector TypeUSB Type CUSB Type C
Connector Features
  • USB OTG
  • USB OTG
SAR US Head0.77 W/Kg
SAR US Body1.02 W/Kg
SAR EU Head0.714 W/Kg
SAR EU Body1.58 W/Kg
Sim Card 0
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
NameSIM0SIM0
SIM TypeNano SIMNano SIM
Sim Card 1
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
NameSIM0
Multimedia
Product NameGalaxy S25 UltraGalaxy S21 Ultra (SD888)
Speaker channelsStereo
Audio Features
  • Loudspeaker
  • FM Radio
  • Loudspeaker
  • FM Radio
Audio Formats
  • AAC
  • 3GA
  • AMR
  • RA
  • FLAC
  • M4A
  • MID
  • MIDI
  • MP3
  • OGA
  • OGG
  • WMA
  • WAV
  • AWB
  • XMF
  • MXMF
  • IMY
  • RTTTL
  • OTA
  • DSF
  • AAC
  • 3GA
  • AMR
  • RA
  • FLAC
  • M4A
  • MID
  • MIDI
  • MP3
  • OGA
  • OGG
  • WMA
  • WAV
  • AWB
  • XMF
  • MXMF
  • IMY
  • RTTTL
  • OTA
  • DSF
Video Formats
  • MPEG-4
  • MP4
  • MPEG-4
  • MP4
Sensors
  • Proximity
  • Accelerometer
  • Compass
  • Gyroscope
  • Barometer
  • Fingerprint
  • GPS
  • A-GPS
  • GLONASS
  • BeiDou
  • Galileo
  • Proximity
  • Accelerometer
  • Compass
  • Gyroscope
  • Barometer
  • Fingerprint
  • GPS
  • A-GPS
  • GLONASS
  • BeiDou
  • Galileo

Samsung Galaxy S25 Ultra vs. Samsung Galaxy S21 Ultra (SD888) Specs & Speed Benchmarks

Geekbench 5 Single

Higher is better
Google Pixel 7 ProGalaxy S21 Ultra (SD888)Samsung Galaxy S23 UltraSamsung Galaxy S22 UltraSamsung Galaxy S24 Ultra850900950100010501100115012001250130013501400145015001550160016501700

Geekbench 5 Multi

Higher is better
Galaxy S21 Ultra (SD888)Google Pixel 7 ProSamsung Galaxy S22 UltraSamsung Galaxy S23 UltraSamsung Galaxy S24 Ultra2750300032503500375040004250450047505000525055005750600062506500

GFXBench Manhattan (Offscr.)

Higher is better
Google Pixel XLGalaxy S21 Ultra (SD888)Google Pixel 7 ProSamsung Galaxy S22 Ultra255075100125150175200225

GFXBench Manhattan 3.1 (Offscr.)

Higher is better
Google Pixel XLGalaxy S21 Ultra (SD888)Google Pixel 7 ProSamsung Galaxy S22 UltraSamsung Galaxy S23 UltraSamsung Galaxy S24 Ultra255075100125150175200225250275

GFXBench T-Rex (Offscr.)

Higher is better
Google Pixel XLGalaxy S21 Ultra (SD888)Samsung Galaxy S22 Ultra75100125150175200225250275300325

Battery Capacity (mAh)

Higher is better
Lenovo A PlusGoogle Pixel XLApple iPhone 11 Pro MaxSamsung Galaxy S25 UltraGalaxy S21 Ultra (SD888)Samsung Galaxy S24 UltraSamsung Galaxy S22 UltraSamsung Galaxy S23 UltraGoogle Pixel 7 Pro150017502000225025002750300032503500375040004250450047505000

Battery Charge Speed (mAh/mn)

Higher is better
Google Pixel XLGoogle Pixel 7 ProGalaxy S21 Ultra (SD888)Samsung Galaxy S23 UltraSamsung Galaxy S22 Ultra404550556065707580859095100105110115