Two devices. One clear decision.

LAUNCH DATE3 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Announced	2026, August 11	February 17, 2023
Released	2026, August 11	2023-02-17
Status	Available	Available

NETWORK6 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
2G Bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Bands	HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100; CDMA2000 1xEV-DO
4G LTE	1, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42, 43, 48, 66	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International; 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71 - USA
5G	1, 3, 5, 7, 8, 18, 26, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA	1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International; 1, 7, 28, 41, 66, 71, 78, 258, 260, 261 SA/NSA/Sub6/mmWave - USA
Speed	HSPA, LTE, 5G	LTE, 5G
Technology	GSM / WCDMA / LTE / 5G	5G/4G/LTE/GSM

BODY5 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Build	Glass front, Aluminum frame	Glass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frame
Dimensions	163.5 x 78 x 8.5 mm (6.44 x 3.07 x 0.33 in)	163.4 x 78.1 x 8.9 mm (6.43 x 3.07 x 0.35 in)
IP Rating	IP68/IP69 dust tight and Water resistant (high pressure water jets; immersible up to 1.5m for 30 min)	IP68 dust/water resistant (up to 1.5m for 30 min)
SIM	Nano-SIM + Nano-SIM	Nano-SIM + eSIM Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Weight	238 g	234 g (8.25 oz)

DISPLAY7 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Brightness	4500 nits peak	1200 nits (HBM), 1750 nits (peak)
Protection	Xiaomi Dragon Crystal Glass	Corning Gorilla Glass Victus 2
Refresh Rate	185Hz	120Hz
Resolution	1200 x 2608 pixels, 19.5:9 ratio (~416 ppi density)	1440 x 3088 pixels, 19.3:9 ratio (~500 ppi density)
Screen-to-body	~91.5%	~89.9%
Size	6.9 inches	6.8 inches, 114.7 cm2 (~89.9% screen-to-body ratio)
Type	AMOLED	Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (HBM), 1750 nits (peak)

PLATFORM4 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
CPU	Octa-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)
Chipset	Qualcomm Snapdragon 8 Elite Gen 5	Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm)
GPU	Adreno 840	Adreno 740
OS	Android; 16; HyperOS 3	Android 13, up to 4 major Android upgrades, One UI 6.1.1

MEMORY5 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Card slot	No	No
Internal	256 / 512 GB / 1 TB	256GB, 512GB, 1TB
RAM	12 / 16 GB	8GB RAM, 12GB RAM
Storage Type	UFS 4.1	—
Storage/RAM variants	256 / 512 GB / 1 TB; 12 / 16 GB RAM	256GB, 512GB, 1TB; 8GB RAM, 12GB RAM

MAIN CAMERA3 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Features	Color spectrum sensor, LED Flash, Panorama, HDR	Laser AF, LED flash, auto-HDR, panorama
MAIN CAMERA	200 MP main with OIS; 50 MP telephoto; 50 MP ultrawide	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, 1
Video	8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960/1920fps, gyro-EIS, HDR10+	8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS

SELFIE CAMERA3 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Features	HDR	HDR, HDR10+
Selfie camera	32 MP, (wide)	12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
Video	1080p@30fps	4K@30/60fps, 1080p@30fps

SOUND2 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
3.5mm jack	No	No
Loudspeaker	Yes, with Stereo Speakers	Yes, with stereo speakers

COMMUNICATION6 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Bluetooth	6.0, A2DP, LE, LHDC 5.0, ASHA, MIHC, Auracast	5.3, A2DP, LE
NFC	Yes	Yes
Positioning	Yes	GPS, GALILEO, GLONASS, BDS, QZSS
Radio	No	No
USB	USB Type-C 2.0	USB Type-C 3.2, OTG
WLAN	Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac/6e, tri-band, Wi-Fi Direct

FEATURES1 field

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Sensors	Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass	Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer

BATTERY3 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Capacity	9070mAh	5000 mAh
Charging Type	100W wired; 50W wireless; 22.5W reverse wired	45W wired, PD3.0, 65% in 30 min 15W wireless (Qi) 4.5W reverse wireless
Type	Non-removable Si/C Li-Ion Battery	Li-Ion 5000 mAh

ADDITIONAL INFORMATION5 fields

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Colors	Black, White, Blue, Red (Burgundy)	Phantom Black, Green, Cream, Lavender, Graphite, Sky Blue, Lime, Red, BMW M Edition
Compatibility	China	—
Launch Price (USD)	—	$571.00 (reference only — see Price in Nigeria above for the actual retail price)
Models	Redmi K100 Pro Max	SM-S918B, SM-S918B/DS, SM-S918U, SM-S918U1, SM-S918W, SM-S918N, SM-S9180, SM-S918E, SM-S918E/DS
Price in Nigeria	₦1,300,000 (Stored estimate)	₦1,300,000 (Seller price)

SECURITY1 field

Specification	Redmi K100 Pro Max	Galaxy S23 Ultra
Security	Biometric security: Fingerprint (under display, ultrasonic).	Biometric security: Fingerprint (under display, ultrasonic).