Screen size
Mi Mix FoldWinner: 8.0"+15%
Redmi K90 Max6.8"
Quick verdict
Redmi K90 Max leads the measured specs 8-6.
Measured wins
Mi Mix Fold
6
spec wins
Ties
8
equal specs
Redmi K90 Max
8
spec wins
Overall winner
Screen size
Technology
Mi Mix Fold
GSM / CDMA / HSPA / EVDO / LTE / 5G
Redmi K90 Max
GSM / HSPA / LTE / 5G
2G bands
Mi Mix Fold
GSM 850 / 900 / 1800 / 1900 , CDMA 800
Redmi K90 Max
GSM 850 / 900 / 1800 / 1900
3G bands
Mi Mix Fold
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1xEV-DO
Redmi K90 Max
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Mi Mix Fold
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
equal specsMain camera
Front camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
equal specsRedmi K90 Max
1, 3, 4, 5, 7, 8, 19, 28, 34, 38, 39, 40, 41, 42, 43, 48, 66
5G bands
Mi Mix Fold
1, 3, 28, 41, 77, 78, 79 SA/NSA
Redmi K90 Max
1, 3, 5, 7, 8, 28, 34, 38, 39, 40, 41, 48, 77, 78 SA/NSA
Speed
Mi Mix Fold
HSPA, LTE, 5G
Redmi K90 Max
HSPA, LTE, 5G
Announced
Mi Mix Fold
2021, March
Redmi K90 Max
2026, April 21
Status
Mi Mix Fold
Available. Released 2021, April 16
Redmi K90 Max
Available. Released 2026, April 21
Dimensions
Mi Mix Fold
Unfolded: 173.3 x 133.4 x 7.6 mm Folded: 173.3 x 69.8 x 17.2 mm
Redmi K90 Max
162.9 x 77.9 x 8.2 mm (6.41 x 3.07 x 0.32 in)
Weight
Mi Mix Fold
317 g (Glass)332 g (Ceramic) (11.18 oz)
Redmi K90 Max
227 g (8.01 oz)
Build
Mi Mix Fold
Glass front (folded), plastic front (unfolded), glass back (Gorilla Glass 5) or ceramic back, aluminum frame
Redmi K90 Max
Glass front (Dragon Crystal Glass), aluminum frame, glass-fiber reinforced plastic back or silicone polymer back
SIM
Mi Mix Fold
Nano-SIM + Nano-SIM
Redmi K90 Max
Nano-SIM + Nano-SIM
Other
Mi Mix Fold
-
Redmi K90 Max
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Built-in cooling fan
Type
Mi Mix Fold
Foldable AMOLED, 1B colors, HDR10+, Dolby Vision, 600 nits (typ), 900 nits (peak)
Redmi K90 Max
AMOLED, 68B colors, 165Hz, Dolby Vision, HDR10+, HDR Vivid, 3500 nits (peak)
Size
Mi Mix Fold
8.01 inches, 198.7 cm2 (~85.9% screen-to-body ratio)
Redmi K90 Max
6.83 inches, 114.5 cm2 (~90.3% screen-to-body ratio)
Resolution
Mi Mix Fold
1860 x 2480 pixels, 4:3 ratio (~387 ppi density)
Redmi K90 Max
1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density)
Other
Mi Mix Fold
Cover display: AMOLED, 90Hz, HDR10+, Dolby Vision, 650 nits (typ), 900 nits (peak) 6.52 inches, 840 x 2520 pixels, 27:9 ratio
Redmi K90 Max
-
Protection
Mi Mix Fold
-
Redmi K90 Max
Dragon Crystal Glass
OS
Mi Mix Fold
Android 10, MIUI 12
Redmi K90 Max
Android 16, HyperOS 3
Chipset
Mi Mix Fold
Qualcomm SM8350 Snapdragon 888 5G (5 nm)
Redmi K90 Max
MediaTek Dimensity 9500 (3 nm)
CPU
Mi Mix Fold
Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55)
Redmi K90 Max
Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)
GPU
Mi Mix Fold
Adreno 660
Redmi K90 Max
Mali-G1 Ultra MC12
Card slot
Mi Mix Fold
No
Redmi K90 Max
No
Internal
Mi Mix Fold
256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM
Redmi K90 Max
256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
Other
Mi Mix Fold
UFS 3.1
Redmi K90 Max
UFS 4.1
Triple
Mi Mix Fold
108 MP, f/1.8, (wide), 1/1.52", 0.7µm, PDAF 8 MP, 80mm (telephoto/macro), liquid lens, PDAF, 3x optical zoom 13 MP, f/2.4, 123˚ (ultrawide), 1.12µm
Redmi K90 Max
-
Features
Mi Mix Fold
Color spectrum sensor, Dual-LED flash, HDR, panorama
Redmi K90 Max
LED flash, HDR, panorama
Video
Mi Mix Fold
8K@24/30fps, 4K@30/60fps, 1080p@30/60fps, gyro-EIS
Redmi K90 Max
8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS
Dual
Mi Mix Fold
-
Redmi K90 Max
50 MP, f/1.7, 24mm (wide), 1/1.55", 1.0µm, PDAF, OIS 8 MP, f/2.2, (ultrawide), 1/4.0", 1.12µm
Single
Mi Mix Fold
20 MP, (wide)
Redmi K90 Max
20 MP (wide)
Features
Mi Mix Fold
HDR, panorama
Redmi K90 Max
HDR
Video
Mi Mix Fold
1080p@30/60fps, 720p@120fps
Redmi K90 Max
1080p@30/60fps
Loudspeaker
Mi Mix Fold
Yes, with stereo speakers (4 speakers)
Redmi K90 Max
Yes, with stereo speakers (with Dolby Atmos)
3.5mm jack
Mi Mix Fold
No
Redmi K90 Max
No
Other
Mi Mix Fold
24-bit/192kHz Hi-Res audio Tuned by Harman Kardon Snapdragon Sound
Redmi K90 Max
Tuned by Bose Bose 2.1 stereo sound system with a woofer 24-bit/192kHz Hi-Res & Hi-Res wireless audio
WLAN
Mi Mix Fold
Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Redmi K90 Max
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct
Bluetooth
Mi Mix Fold
5.2, A2DP, LE, aptX HD, aptX Adaptive
Redmi K90 Max
5.4, A2DP, LE, LHDC 5, Auracast, ASHA, MIHC
Positioning
Mi Mix Fold
GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
Redmi K90 Max
GPS (L1+L5), BDS (B1I+B1c+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), GLONASS, NavIC
NFC
Mi Mix Fold
Yes
Redmi K90 Max
Yes
Infrared port
Mi Mix Fold
Yes
Redmi K90 Max
Yes
Radio
Mi Mix Fold
No
Redmi K90 Max
No
USB
Mi Mix Fold
USB Type-C
Redmi K90 Max
USB Type-C
Sensors
Mi Mix Fold
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer
Redmi K90 Max
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass
Type
Mi Mix Fold
Li-Po 5020 mAh
Redmi K90 Max
8550 mAh
Charging
Mi Mix Fold
67W wired, PD3.0, QC4, 100% in 37 min
Redmi K90 Max
100W wired, 100W PPS, PD3.0 22.5W reverse wired
Colors
Mi Mix Fold
Black, Ceramic
Redmi K90 Max
Silver, Blue, Black
Models
Mi Mix Fold
M2011J18C
Redmi K90 Max
-
Price
Mi Mix Fold
About 1300 EUR
Redmi K90 Max
About 440 EUR