Compare / Xiaomi 17 Ultra vs Xiaomi Redmi K100
Xiaomi 17 Ultra vs Xiaomi Redmi K100
A side-by-side comparison of the Xiaomi 17 Ultra and the Xiaomi Redmi K100, covering display, chipset, memory, camera, battery and build.
Overview
Specifications
Xiaomi 17 Ultra
- Technology
- GSM / HSPA / LTE / 5G
- 2G bands
- GSM 850 / 900 / 1800 / 1900
- 3G bands
- HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
- 4G bands
- 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
- 5G bands
- 1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 48, 66, 71, 75, 77, 78, 79 SA/NSA
- Speed
- HSPA, LTE, 5G
Xiaomi Redmi K100
- Technology
- GSM / HSPA / LTE / 5G
- 2G bands
- GSM 850 / 900 / 1800 / 1900
- 3G bands
- HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
- 4G bands
- 1, 3, 4, 5, 7, 8, 19, 28, 34, 38, 39, 40, 41, 42, 48, 66
- 5G bands
- 1, 3, 5, 7, 8, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA
- Speed
- HSPA, LTE, 5G
Xiaomi 17 Ultra
- Announced
- 2026, February 28
- Status
- Available. Released 2026, March 10
Xiaomi Redmi K100
- Announced
- 2026, October 27
- Status
- Available. Released 2026, October 27
Xiaomi 17 Ultra
- Dimensions
- 162.9 x 77.6 x 8.3 mm (6.41 x 3.06 x 0.33 in)
- Weight
- 218.4 g or 223.4 g (7.69 oz)
- Build
- Glass front, glass-fiber reinforced plastic back / silicone polymer back (eco leather), aluminum frame
- SIM
Nano-SIM + Nano-SIM + eSIM + eSIM + eSIM (max 2 at a time)
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 6m for 30 min)
Aerospace-grade glass fiber
Xiaomi Redmi K100
- Dimensions
- 162.9 x 77.9 x 8.7 mm (6.41 x 3.07 x 0.34 in)
- Weight
- 234.5 g (8.29 oz)
- Build
- Glass front, aluminum frame
- SIM
Nano-SIM + Nano-SIM
IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
Xiaomi 17 Ultra
- Type
- LTPO AMOLED68B colors120Hz2160Hz PWMDolby VisionHDR10+3500 nits (peak)
- Size
- 6.9 inches, 116.6 cm2 (~92.3% screen-to-body ratio)
- Resolution
- 1200 x 2608 pixels, 19.5:9 ratio (~416 ppi density)
- Protection
- Xiaomi Shield Glass 3.0
Xiaomi Redmi K100
- Type
- AMOLED68B colors165HzDolby VisionHDR VividHDR10+3500 nits (HBM)9000 nits (peak)*
- Size
- 6.83 inches, 114.5 cm2 (~90.3% screen-to-body ratio)
- Resolution
1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density)
* Measured at an isolated spot during video playback only
Xiaomi 17 Ultra
- OS
- Android 16, upgradable to Android 17, HyperOS 3
- Chipset
- Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)
- CPU
- Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
- GPU
- Adreno 840
Xiaomi Redmi K100
- OS
- Android 17, HyperOS 4
- Chipset
- Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm)
- CPU
- Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
- GPU
- Adreno 840
Xiaomi 17 Ultra
- Card slot
- No
- Internal
512GB 16GB RAM, 1TB 16GB RAM
UFS 4.1
Xiaomi Redmi K100
- Card slot
- No
- Internal
256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM
UFS 4.1
Xiaomi 17 Ultra
- Triple
50 MP, f/1.7, 23mm (wide), 1.0"-type, 1.6µm, dual pixel PDAF, OIS
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
50 MP, f/2.2, 14mm, 115˚ (ultrawide), 1/2.76", 0.64µm, dual pixel PDAF
TOF 3D, (depth)
- Features
- Laser AFcolor spectrum sensorLeica lensesDual-LED flashHDRpanorama
- Video
- 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)
Xiaomi Redmi K100
- Dual
50 MP, f/1.7, (wide), 1/1.55", 1.0µm, PDAF, OIS
8 MP, f/2.2, 15mm, 120˚ (ultrawide), 1/4.0", 1.12µm
- Features
- Color spectrum sensor, LED flash, HDR, panorama
- Video
- 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS, HDR10+
Xiaomi 17 Ultra
- Single
- 50 MP, f/2.2, 21mm (wide), 1/2.7", 0.61µm, AF
- Features
- HDR, panorama
- Video
- 4K@30/60fps, 1080p@30/60/120fps, gyro-EIS
Xiaomi Redmi K100
- Single
- 20 MP, (wide), 1/2.0", 0.8µm
- Video
- 1080p@30/60fps
Xiaomi 17 Ultra
- Loudspeaker
- Yes, with stereo speakers
- 3.5mm jack
No
24-bit/192kHz Hi-Res & Hi-Res Wireless audio
Xiaomi Redmi K100
- Loudspeaker
- Yes, with stereo speakers (with Dolby Atmos)
- 3.5mm jack
No
Tuned by Bose
24-bit/192kHz Hi-Res & Hi-Res wireless audio
Xiaomi 17 Ultra
- WLAN
- Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
- Bluetooth
- 6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5, MIHC
- Positioning
- GPS (L1+L5)BDS (B1I+B1c+B2a)GALILEO (E1+E5a)QZSS (L1+L5)NavIC (L5)GLONASS
- NFC
- Yes
- Infrared port
- Yes
- Radio
- No
- USB
- USB Type-C 3.2 Gen 2, DisplayPort, OTG
Xiaomi Redmi K100
- WLAN
- Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct
- Bluetooth
- 5.4, A2DP, LE, LHDC 5.0, ASHA, Auracast
- Positioning
- GPS (L1+L5)BDS (B1I+B1c+B2a)GALILEO (E1+E5a)QZSS (L1+L5)NavICGLONASS
- NFC
- Yes
- Infrared port
- Yes
- Radio
- No
- USB
- USB Type-C 2.0, OTG
Xiaomi 17 Ultra
- Sensors
- Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
Xiaomi Redmi K100
- Sensors
- Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass
Xiaomi 17 Ultra
- Type
- Si/C Li-Ion 6000 mAh
- Charging
90W wired, 90W PPS, PD3.0, QC3+
50W wireless
22.5W reverse wired
10W reverse wireless
Xiaomi Redmi K100
- Type
- Si/C Li-Ion 10000 mAh
- Charging
100W wired, PD3.0, QC3+, 100W PPS
27W reverse wired
Bypass charging
Xiaomi 17 Ultra
- Colors
- Black, White, Starlit Green
- Models
- 25128PNA1G, 2512BPNDAG
- Price
- £ 1,099.00 / € 1,199.90 / $ 1,205.61
Xiaomi Redmi K100
- Colors
- Black, White, Green
- Price
- About 470 EUR
Xiaomi 17 Ultra
- Performance
AnTuTu: 2777490 (v10), 3863387 (v11)
GeekBench: 10896 (v6)
3DMark: 6948 (Wild Life Extreme)
- Display
- 1132 nits max brightness (measured)
- Loudspeaker
- -24.1 LUFS (Very good)
- Battery
- Active use score 19:09h
Xiaomi Redmi K100
Not listed for this device
How the Xiaomi 17 Ultra and Xiaomi Redmi K100 differ
- The Xiaomi Redmi K100 has a larger battery, 10000 mAh against 6000 mAh on the Xiaomi 17 Ultra.
- The Xiaomi 17 Ultra has the bigger screen, 6.9 inches against 6.83 inches.
- The Xiaomi Redmi K100 is the newer of the two, released in October 2026.