Xiaomi Redmi K90 Pro Max vs Samsung Galaxy S23 Ultra

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PHONES
Phone Names Xiaomi Redmi K90 Pro Max Samsung Galaxy S23 Ultra
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42, 48, 661, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International
5G bands1, 3, 5, 7, 8, 18, 26, 28, 38, 40, 41, 48, 66, 77, 78, 80, 81, 83, 84, 89 SA/NSA1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International
SpeedHSPA, LTE, 5GHSPA, LTE (up to 7CA), 5G
TechnologyGSM / HSPA / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 -1, 7, 28, 41, 66, 71, 78, 258, 260, 261 SA/NSA/Sub6/mmWave - USA
Launch
Announced2025, October 232023, February 01
StatusAvailable. Released 2025, October 23Available. Released 2023, February 17
Body
BuildGlass front (Dragon Crystal Glass), aluminum alloy frame, fiber-reinforced plastic back or silicone polymer backGlass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frame
Dimensions163.3 x 77.8 x 7.9 mm (6.43 x 3.06 x 0.31 in)163.4 x 78.1 x 8.9 mm (6.43 x 3.07 x 0.35 in)
SIMNano-SIM + Nano-SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Weight218 g (7.69 oz)234 g (8.25 oz)
 -IP68 dust/water resistant (up to 1.5m for 30 min) Armor aluminum frame with tougher drop and scratch resistance (advertised) Stylus (Bluetooth integration, accelerometer, gyro)
Display
ProtectionXiaomi Dragon Crystal GlassCorning Gorilla Glass Victus 2
Resolution1200 x 2608 pixels, 19.5:9 ratio (~416 ppi density)1440 x 3088 pixels, 19.3:9 ratio (~500 ppi density)
Size6.9 inches, 116.6 cm2 (~91.8% screen-to-body ratio)6.8 inches, 114.7 cm2 (~89.9% screen-to-body ratio)
TypeAMOLED, 68B colors, 2560Hz PWM, 120Hz, Dolby Vision, HDR Vivid, HDR10+, 3500 nits (peak)Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (HBM), 1750 nits (peak)
 -Always-on display
Platform
CPUOcta-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)Octa-core (1x3.36 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)
ChipsetQualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm)
GPUAdreno 840Adreno 740
OSAndroid 16, HyperOS 3Android 13, up to 4 major Android upgrades, One UI 8
Memory
Card slotNoNo
Internal256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM
 -UFS 4.0
Main Camera
FeaturesColor spectrum sensor, LED flash, HDR, panoramaLaser AF, LED flash, auto-HDR, panorama
Quad-200 MP, f/1.7, 24mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS 10 MP, f/2.4, 70mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 230mm (periscope telephoto), 1/3.52", 1.12µm, PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video
Single-12 MP, f/2.2, 26mm (wide), Dual Pixel PDAF
Triple50 MP, f/1.7, 23mm (wide), 1/1.31", 1.2µm, dual pixel PDAF, OIS 50 MP, f/3.0, 115mm (periscope telephoto), 1/2.76", 0.64µm, PDAF (30cm - ∞), OIS, 5x optical zoom 50 MP, f/2.4, 18mm, 102˚ (ultrawide), 1/2.88", 0.61µm-
Video8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, 720p@1920fps, gyro-EIS, HDR10+8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
Selfie camera
Features-HDR, HDR10+
Single32 MP, f/2.2, 21mm (wide), 1/3.44", 0.64µm12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
Video4K@30fps, 1080p@30/60fps4K@30/60fps, 1080p@30fps
Sound
3.5mm jack -No
35mm jackNoNo
Loudspeaker Yes, with stereo speakers (with Dolby Atmos)Yes, with stereo speakers
 -32-bit/384kHz audio Tuned by AKG
Comms
Bluetooth5.4, A2DP, LE, LHDC 5.0, ASHA, MIHC5.3, A2DP, LE
Infrared portYes-
NFCYesYes
PositioningGPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC, GLONASSGPS, GALILEO, GLONASS, BDS, QZSS
RadioNoNo
USBUSB Type-C 3.2, Display Port, OTGUSB Type-C 3.2, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6e, tri-band, Wi-Fi Direct
Features
SensorsFingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compassFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
 -Samsung DeX, Samsung Wireless DeX (desktop experience support) Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified) Ultra Wideband (UWB) support
Battery
Charging100W wired, PD3.0, QC3+, 100W PPS 50W wireless 22.5W reverse wireless45W wired, PD3.0, 65% in 30 min 15W wireless (Qi) 4.5W reverse wireless
TypeSi/C Li-Ion 7560 mAhLi-Ion 5000 mAh
Misc
ColorsBlack, White, Denim Blue, Lamborgini WhitePhantom Black, Green, Cream, Lavender, Graphite, Sky Blue, Lime, Red, BMW M Edition
Models-SM-S918B, SM-S918B/DS, SM-S918U, SM-S918U1, SM-S918W, SM-S918N, SM-S9180, SM-S918E, SM-S918E/DS
PriceAbout 500 EUR€ 549.90 / $ 454.99 / £ 433.00
SAR-1.12 W/kg (head)     0.92 W/kg (body)
SAR EU-0.96 W/kg (head)     1.40 W/kg (body)
Tests
Battery life- Endurance rating 126h
Camera- Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker- -25.6 LUFS (Very good)
Performance- AnTuTu: 1241531 (v9) GeekBench: 4927 (v5.1) GFXBench: 67fps (ES 3.1 onscreen)
OUR TESTS
Battery-Active use score 13:24h
Battery (old)-Endurance rating 126h
Camera-Photo / Video
Display-1274 nits max brightness (measured)
Loudspeaker--25.6 LUFS (Very good)
Performance-AnTuTu: 1241531 (v9) GeekBench: 4927 (v5.1) 3DMark: 3790 (Wild Life Extreme)