Samsung Galaxy Note 21 vs Xiaomi 17 Ultra

1,370 USD

1,349 USD

Discontinued

Available

Samsung Mobile

Xiaomi Mobiles

Note 21

25128PNA1G, 2512BPNDAG

2021, October 31

2026, February 28

GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only)

GSM / HSPA / LTE / 5G

CDMA 800 / 1900 & TD-SCDMA

GSM 850 / 900 / 1800 / 1900

HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO

HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100

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

1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 42, 48, 66, 71

SA/NSA/Sub6/mmWave

1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 48, 66, 71, 75, 77, 78, 79 SA/NSA

HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G

HSPA, LTE, 5G

165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)

162.9 x 77.6 x 8.3 mm (6.41 x 3.06 x 0.33 in)

227 g (Sub6), 229 g (mmWave) (8.01 oz)

218.4 g or 223.4 g (7.69 oz)

Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)

Nano-SIM + Nano-SIM + eSIM + eSIM + eSIM (max 2 at a time)

Phantom Black, Phantom Silver

Black, White, Starlit Green

Glass front, fiber-reinforced plastic back / silicone polymer back (eco leather), aluminum alloy frame

Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)

LTPO AMOLED, 68B colors, 120Hz, 2160Hz PWM, Dolby Vision, HDR10+, 3500 nits (peak)

6.8 inches

6.9 inches, 116.6 cm2 (~92.3% screen-to-body ratio)

1440 x 3200 pixels, 20:9 ratio

1200 x 2608 pixels, 19.5:9 ratio (~416 ppi density)

Android 11 One UI 3.1

Android 16, HyperOS 3

Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 (5 nm) - USA/China

Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)

Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680 - USA/China

Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)

Mali-G78 MP14 - International Adreno 660 - USA/China

Adreno 840

12GB/16GB

16GB

128GB/256GB/512GB

512GB/1TB

No

108 MP, f/1.8, 26mm (wide), 1/1.33", 0.8µm, PDAF, Laser AF, OIS

50 MP, f/1.7, 23mm (wide), 1.0"-type, 1.6µm, dual pixel PDAF, OIS

10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom

200 MP, f/2.4-3.0, 75-100mm (periscope telephoto), 1/1.4", 0.56µm, multi-directional PDAF (30cm - ∞), OIS, 3.2-4.3x continuous optical zoom, zoom ring

10 MP, f/2.4, 70mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom

50 MP, f/2.2, 14mm, 115˚ (ultrawide), 1/2.76", 0.64µm, dual pixel PDAF TOF 3D, (depth)

12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super

LED flash, auto-HDR, panorama

Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama

8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS

8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240/480/960/1920fps, gyro-EIS, Dolby Vision HDR 10-bit rec. (4K@60fps, 1080p)

40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF

50 MP, f/2.2, 21mm (wide), 1/2.7", 0.61µm, AF

Dual video call, Auto-HDR

HDR, panorama

4K@30/60fps, 1080p@30fps

4K@30/60fps, 1080p@30/60/120fps, gyro-EIS

5000 mAh Non-Removable

Si/C Li-Ion 6000 mAh

Fast battery charging 25W Wireless Charging USB Power Delivery 3.0 Fast Qi/PMA wireless charging 15W Reverse wireless charging 4.5W

90W wired, 90W PPS, PD3.0, QC3+ 50W wireless 22.5W reverse wired 10W reverse wireless

Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+ Bixby natural language commands and dictation

Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer

32-bit/384kHz audio Tuned by AKG

Yes

3.5mm Audio Jeck

Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot

Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct

5.2, A2DP, LE

6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5, MIHC

Yes, with A-GPS, GLONASS, BDS, GALILEO

GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS

Yes

Yes

USB Type-C 3.2, USB On-The-Go

USB Type-C 3.2 Gen 2, DisplayPort, OTG