Samprix

iPhone 15vs Galaxy S21 Ultra

Weighted overall score across performance, camera, battery, RAM, storage and display — plus the full spec sheet below.

Rank #2
76 Score
iPhone 15
Apple
Rank #1
85 Score
Galaxy S21 Ultra
Samsung

Score breakdown

How each phone scores per category, out of 100.

Performance
iPhone 15 90
Galaxy S21 Ultra 68
Camera
iPhone 15 49
Galaxy S21 Ultra 73
Battery
iPhone 15 75
Galaxy S21 Ultra 91
RAM
iPhone 15 61
Galaxy S21 Ultra 100
Storage
iPhone 15 100
Galaxy S21 Ultra 100
Display
iPhone 15 92
Galaxy S21 Ultra 100

Full specifications

Every field on record — collapse a category to skip it.

RAM Differs
iPhone 15 6GB RAM
Galaxy S21 Ultra 8-16GB RAM
Body Differs
iPhone 15 171g, 7.8mm thickness
Galaxy S21 Ultra 227g (Sub6), 229g (mmWave), 8.9mm thickness
Video Differs
iPhone 15 2160p
Galaxy S21 Ultra 4320p
Camera Differs
iPhone 15 48MP
Galaxy S21 Ultra 108MP
Battery Differs
iPhone 15 3349mAh
Galaxy S21 Ultra 5000mAh
Chipset Differs
iPhone 15 Apple A16 Bionic
Galaxy S21 Ultra Exynos 2100
OS Differs
iPhone 15 iOS 17, up to iOS 26.6
Galaxy S21 Ultra Android 11, up to 4 major OS updates
Storage
iPhone 15 128GB/256GB/512GB storage, no card slot
Galaxy S21 Ultra 128GB/256GB/512GB storage, no card slot
Battery type Differs
iPhone 15 PD2.015W
Galaxy S21 Ultra 25W15W
Display resolution Differs
iPhone 15 1179x2556 pixels
Galaxy S21 Ultra 1440x3200 pixels
Display size Differs
iPhone 15 6.1"
Galaxy S21 Ultra 6.8"
Release date Differs
iPhone 15 Released 2023, September 22
Galaxy S21 Ultra Released 2021, January 29
Technology
iPhone 15 GSM / CDMA / HSPA / EVDO / LTE / 5G
Galaxy S21 Ultra GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands
iPhone 15 GSM 850 / 900 / 1800 / 1900
Galaxy S21 Ultra GSM 850 / 900 / 1800 / 1900
3G bands
iPhone 15 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Galaxy S21 Ultra HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
iPhone 15 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 34, 38, 39, 40, 41, 42, 46, 48, 53, 66 - A3090
Galaxy S21 Ultra 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1
5G bands
iPhone 15 1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 30, 38, 40, 41, 48, 53, 66, 70, 77, 78, 79 SA/NSA/Sub6 - A3090
Galaxy S21 Ultra 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1
Speed
iPhone 15 HSPA, LTE, 5G, EV-DO Rev.A 3.1 Mbps
Galaxy S21 Ultra HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)
Announced
iPhone 15 2023, September 12
Galaxy S21 Ultra 2021, January 14
Status
iPhone 15 Available. Released 2023, September 22
Galaxy S21 Ultra Available. Released 2021, January 29
Dimensions
iPhone 15 147.6 x 71.6 x 7.8 mm (5.81 x 2.82 x 0.31 in)
Galaxy S21 Ultra 165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)
Weight
iPhone 15 171 g (6.03 oz)
Galaxy S21 Ultra 227 g (Sub6), 229 g (mmWave) (8.01 oz)
Build
iPhone 15 Glass front, glass back, aluminum frame
Galaxy S21 Ultra Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
SIM
iPhone 15 · Nano-SIM + eSIM + eSIM (max 2 at a time; International)· eSIM + eSIM (8 or more, max 2 at a time; USA)· Nano-SIM + Nano-SIM (China)
Galaxy S21 Ultra · Nano-SIM + eSIM· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Type
iPhone 15 Super Retina XDR OLED, HDR10, Dolby Vision, 1000 nits (HBM), 2000 nits (peak)
Galaxy S21 Ultra Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)
Size
iPhone 15 6.1 inches, 91.3 cm2 (~86.4% screen-to-body ratio)
Galaxy S21 Ultra 6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio)
Resolution
iPhone 15 1179 x 2556 pixels, 19.5:9 ratio (~461 ppi density)
Galaxy S21 Ultra 1440 x 3200 pixels, 20:9 ratio (~515 ppi density)
Protection
iPhone 15 Ceramic Shield glass
Galaxy S21 Ultra Corning Gorilla Glass Victus
OS
iPhone 15 iOS 17, upgradable to iOS 26.6
Galaxy S21 Ultra Android 11, up to 4 major OS updates, One UI 7
Chipset
iPhone 15 Apple A16 Bionic (4 nm)
Galaxy S21 Ultra Exynos 2100 (5 nm) - InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
CPU
iPhone 15 Hexa-core (2x3.46 GHz Everest + 4x2.02 GHz Sawtooth)
Galaxy S21 Ultra Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - InternationalOcta-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
GPU
iPhone 15 Apple GPU (5-core graphics)
Galaxy S21 Ultra Mali-G78 MP14 - InternationalAdreno 660 - USA/China
Card slot
iPhone 15 No
Galaxy S21 Ultra No
Internal
iPhone 15 128GB 6GB RAM, 256GB 6GB RAM, 512GB 6GB RAM
Galaxy S21 Ultra 128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM
Dual
iPhone 15 48 MP, f/1.6, 26mm (wide), 1/1.56", 1.0µm, dual pixel PDAF, sensor-shift OIS 12 MP, f/2.4, 13mm, 120˚ (ultrawide), 0.7µm
Galaxy S21 Ultra —
Features
iPhone 15 Dual-LED dual-tone flash, HDR (photo/panorama)
Galaxy S21 Ultra Laser AF, LED flash, auto-HDR, panorama
Video
iPhone 15 4K@24/25/30/60fps, 1080p@25/30/60/120/240fps, HDR, Dolby Vision HDR (up to 60fps), stereo sound rec.
Galaxy S21 Ultra 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
Quad
iPhone 15 —
Galaxy S21 Ultra 108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, OIS 10 MP, f/2.4, 72mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video
Single
iPhone 15 12 MP, f/1.9, 23mm (wide), 1/3.6", 1.0µm, PDAF SL 3D, (depth/biometrics sensor)
Galaxy S21 Ultra 40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
Features
iPhone 15 HDR, Dolby Vision HDR
Galaxy S21 Ultra HDR
Video
iPhone 15 4K@24/25/30/60fps, 1080p@25/30/60/120fps, gyro-EIS
Galaxy S21 Ultra 4K@30/60fps, 1080p@30fps
Loudspeaker
iPhone 15 Yes, with stereo speakers
Galaxy S21 Ultra Yes, with stereo speakers
3.5mm jack
iPhone 15 No
Galaxy S21 Ultra No
WLAN
iPhone 15 Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, hotspot
Galaxy S21 Ultra Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Bluetooth
iPhone 15 5.3, A2DP, LE
Galaxy S21 Ultra 5.2, A2DP, LE
Positioning
iPhone 15 GPS, GLONASS, GALILEO, BDS, QZSS
Galaxy S21 Ultra GPS, GLONASS, BDS, GALILEO
NFC
iPhone 15 Yes
Galaxy S21 Ultra Yes
Radio
iPhone 15 No
Galaxy S21 Ultra FM radio (Snapdragon model only; market/operator dependent)
USB
iPhone 15 USB Type-C 2.0, DisplayPort
Galaxy S21 Ultra USB Type-C 3.2, OTG
Sensors
iPhone 15 Face ID, accelerometer, gyro, proximity, compass, barometer
Galaxy S21 Ultra Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Type
iPhone 15 Li-Ion 3349 mAh
Galaxy S21 Ultra Li-Ion 5000 mAh
Charging
iPhone 15 Wired, PD2.0, 50% in 30 min 15W wireless (MagSafe) 15W wireless (Qi2) - requires iOS 17.2 update 4.5W reverse wired
Galaxy S21 Ultra 25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
Colors
iPhone 15 Black, Blue, Green, Yellow, Pink
Galaxy S21 Ultra Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy
Models
iPhone 15 A3090, A2846, A3089, A3092, iPhone15,4
Galaxy S21 Ultra SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980
SAR
iPhone 15 1.12 W/kg (head)     1.14 W/kg (body)
Galaxy S21 Ultra 0.77 W/kg (head)     1.02 W/kg (body)
SAR EU
iPhone 15 0.98 W/kg (head)     0.98 W/kg (body)
Galaxy S21 Ultra 0.71 W/kg (head)     1.58 W/kg (body)
Price
iPhone 15 $ 347.00 / £ 355.00 / € 429.00
Galaxy S21 Ultra $ 254.98 / £ 209.00 / € 257.96
Performance
iPhone 15 AnTuTu: 1354651 (v10) GeekBench: 6526 (v6) GFXBench: 60fps (ES 3.1 onscreen)
Galaxy S21 Ultra AnTuTu: 657150 (v8) GeekBench: 3518 (v5.1) GFXBench: 33fps (ES 3.1 onscreen)
Display
iPhone 15 1643 nits max brightness (measured)
Galaxy S21 Ultra 1023 nits max brightness (measured)
Camera
iPhone 15 Photo / Video
Galaxy S21 Ultra Photo / Video
Loudspeaker
iPhone 15 -26.2 LUFS (Good)
Galaxy S21 Ultra -25.5 LUFS (Very good)
Battery
iPhone 15 Active use score 13:20h
Galaxy S21 Ultra —
Battery (old)
iPhone 15 Endurance rating 98h
Galaxy S21 Ultra Endurance rating 114h
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