Screen size
Mi 9 Explorer6.4"
Redmi K90 MaxWinner: 6.8"+6.4%
Quick verdict
Redmi K90 Max leads the measured specs 14-3.
Measured wins
Mi 9 Explorer
3
spec wins
Ties
6
equal specs
Redmi K90 Max
14
spec wins
Overall winner
Screen size
Technology
Mi 9 Explorer
GSM / CDMA / HSPA / LTE
Redmi K90 Max
GSM / HSPA / LTE / 5G
2G bands
Mi 9 Explorer
GSM 850 / 900 / 1800 / 1900 , CDMA 800 & TD-SCDMA
Redmi K90 Max
GSM 850 / 900 / 1800 / 1900
3G bands
Mi 9 Explorer
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Redmi K90 Max
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Mi 9 Explorer
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 39, 40
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
Front camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
5G support
NFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Redmi K90 Max
1, 3, 4, 5, 7, 8, 19, 28, 34, 38, 39, 40, 41, 42, 43, 48, 66
Speed
Mi 9 Explorer
HSPA 42.2/5.76 Mbps, LTE (5CA) Cat18 1200/150 Mbps
Redmi K90 Max
HSPA, LTE, 5G
5G bands
Mi 9 Explorer
-
Redmi K90 Max
1, 3, 5, 7, 8, 28, 34, 38, 39, 40, 41, 48, 77, 78 SA/NSA
Announced
Mi 9 Explorer
2019, February. Released 2019, June
Redmi K90 Max
2026, April 21
Status
Mi 9 Explorer
Discontinued
Redmi K90 Max
Available. Released 2026, April 21
Dimensions
Mi 9 Explorer
157.5 x 74.7 x 7.6 mm (6.20 x 2.94 x 0.30 in)
Redmi K90 Max
162.9 x 77.9 x 8.2 mm (6.41 x 3.07 x 0.32 in)
Weight
Mi 9 Explorer
173 g (6.10 oz)
Redmi K90 Max
227 g (8.01 oz)
Build
Mi 9 Explorer
Glass front (Gorilla Glass 6), glass back (Gorilla Glass 5), aluminum frame (7000 series)
Redmi K90 Max
Glass front (Dragon Crystal Glass), aluminum frame, glass-fiber reinforced plastic back or silicone polymer back
SIM
Mi 9 Explorer
Nano-SIM + Nano-SIM
Redmi K90 Max
Nano-SIM + Nano-SIM
Other
Mi 9 Explorer
-
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 9 Explorer
Super AMOLED, HDR10
Redmi K90 Max
AMOLED, 68B colors, 165Hz, Dolby Vision, HDR10+, HDR Vivid, 3500 nits (peak)
Size
Mi 9 Explorer
6.39 inches, 100.2 cm2 (~85.2% screen-to-body ratio)
Redmi K90 Max
6.83 inches, 114.5 cm2 (~90.3% screen-to-body ratio)
Resolution
Mi 9 Explorer
1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Redmi K90 Max
1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density)
Protection
Mi 9 Explorer
Corning Gorilla Glass 6
Redmi K90 Max
Dragon Crystal Glass
OS
Mi 9 Explorer
Android 9.0 (Pie), MIUI 10
Redmi K90 Max
Android 16, HyperOS 3
Chipset
Mi 9 Explorer
Qualcomm SM8150 Snapdragon 855 (7 nm)
Redmi K90 Max
MediaTek Dimensity 9500 (3 nm)
CPU
Mi 9 Explorer
Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485)
Redmi K90 Max
Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)
GPU
Mi 9 Explorer
Adreno 640
Redmi K90 Max
Mali-G1 Ultra MC12
Card slot
Mi 9 Explorer
No
Redmi K90 Max
No
Internal
Mi 9 Explorer
256GB 8GB RAM, 256GB 12GB RAM
Redmi K90 Max
256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
Other
Mi 9 Explorer
UFS 2.1
Redmi K90 Max
UFS 4.1
Triple
Mi 9 Explorer
48 MP, f/1.5 (12GB RAM model) or f/1.8 (8GB RAM model), (wide), 1/2.0", 0.8µm, PDAF 12 MP, f/2.2, 54mm (telephoto), 1/3.6", 1.0µm, PDAF, 2x optical zoom 16 MP, f/2.2, 13mm (ultrawide), 1/3.0", 1.0µm, AF
Redmi K90 Max
-
Features
Mi 9 Explorer
Laser AF, Dual-LED flash, HDR, panorama
Redmi K90 Max
LED flash, HDR, panorama
Video
Mi 9 Explorer
4K@30/60fps, 1080p@30/120/240fps, 1080p@960fps
Redmi K90 Max
8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS
Dual
Mi 9 Explorer
-
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 9 Explorer
20 MP, f/2.0, (wide), 1/3", 0.9µm
Redmi K90 Max
20 MP (wide)
Features
Mi 9 Explorer
HDR
Redmi K90 Max
HDR
Video
Mi 9 Explorer
1080p@30fps
Redmi K90 Max
1080p@30/60fps
Loudspeaker
Mi 9 Explorer
Yes
Redmi K90 Max
Yes, with stereo speakers (with Dolby Atmos)
3.5mm jack
Mi 9 Explorer
No
Redmi K90 Max
No
Other
Mi 9 Explorer
-
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 9 Explorer
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Redmi K90 Max
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct
Bluetooth
Mi 9 Explorer
5.0, A2DP, LE, aptX HD
Redmi K90 Max
5.4, A2DP, LE, LHDC 5, Auracast, ASHA, MIHC
Positioning
Mi 9 Explorer
GPS (L1+L5), GLONASS (L1), BDS (B1), GALILEO (E1+E5a), QZSS (L1+L5)
Redmi K90 Max
GPS (L1+L5), BDS (B1I+B1c+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), GLONASS, NavIC
NFC
Mi 9 Explorer
Yes
Redmi K90 Max
Yes
Infrared port
Mi 9 Explorer
Yes
Redmi K90 Max
Yes
Radio
Mi 9 Explorer
No
Redmi K90 Max
No
USB
Mi 9 Explorer
USB Type-C 2.0, OTG
Redmi K90 Max
USB Type-C
Sensors
Mi 9 Explorer
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Redmi K90 Max
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass
Type
Mi 9 Explorer
Li-Po 3300 mAh, non-removable
Redmi K90 Max
8550 mAh
Charging
Mi 9 Explorer
27W wired, QC4 20W wireless
Redmi K90 Max
100W wired, 100W PPS, PD3.0 22.5W reverse wired
Colors
Mi 9 Explorer
Transparent Black
Redmi K90 Max
Silver, Blue, Black
Price
Mi 9 Explorer
About 530 EUR
Redmi K90 Max
About 440 EUR