Compare / Redmi K90 Ultra vs iPhone Air 1st gen
Redmi K90 Ultra vs iPhone Air 1st gen
A side-by-side comparison of the Redmi K90 Ultra and the iPhone Air 1st gen, covering display, chipset, memory, camera, battery and build.
Overview
Specifications
Redmi K90 Ultra
- Technology
- GSM / HSPA / LTE / 5G
- 2G bands
- GSM 850 / 900 / 1800
- 3G bands
- UMTS 2100 / 1700/2100 / 850 / 800 / 900 / 800 - HSUPA, HSUPA 5.8, HSDPA, HSPA+ 21.1, HSPA+ 42.2, DC-HSDPA 42.2
- 4G bands
- LTE bands 1, 3, 5, 7, 8, 19, 28, 34, 38, 39, 40, 41, 42, 48, 66 - 100/50, 150/50, 300/50, 300/75, 300/100, 450/50, 450/100, 600/50, 600/100
- 5G bands
- NR bands 1, 3, 5, 7, 8, 28, 38, 40, 41, 48, 66, 77, 78 - 1500, 2600, 3700 data links
- Dual SIM
- SIM2 supports same bands as SIM1
iPhone Air 1st gen
- Technology
- GSM / HSPA / LTE / 5G
- 2G bands
- GSM 850 / 900 / 1800 / 1900
- 3G bands
- UMTS 2100 / 1900 / 1700/2100 / 850 / 900 - HSUPA, HSUPA 5.8, HSDPA, HSPA+ 21.1, DC-HSDPA 42.2
- 4G bands
- LTE bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 34, 38, 39, 40, 41, 42, 48, 53, 66 - 100/50, 150/50, 300/50, 300/75, 300/100, 400/150, 450/50, 450/100, 600/50, 600/100, 1000/100, 1200/200, 1600, 2000/300
- 5G bands
- NR bands 1, 2, 3, 5, 7, 8, 12, 20, 26, 25, 28, 30, 38, 40, 41, 48, 53, 66, 70, 75, 77, 78, 79 - 1500, 2600, 3700, 4600 data links
- Dual SIM
- SIM2 supports same bands as SIM1
Redmi K90 Ultra
- Announced
- 2026 Jun
- Status
- Available. Released 2026 Jun 29
iPhone Air 1st gen
- Announced
- 2025 Sep 9
- Status
- Available. Released 2025 Sep 19
Redmi K90 Ultra
- Dimensions
- 162.91 × 77.93 × 8.18 mm
- Weight
- 227 g
- Build
- Yes
- SIM
- Nano-SIM (4FF)
- Protection
- IP69 dust/water resistant (150 cm, 30 min)
- Extras
- Haptic touch feedback, Tactile touch feedback
iPhone Air 1st gen
- Dimensions
- 156.2 × 74.7 × 11.3 mm
- Weight
- 165 g
- Build
- Ceramic Shield 2
- SIM
- e-SIM
- Protection
- IP68 dust/water resistant (600 cm, 30 min)
- Extras
- Haptic touch feedback, Tactile touch feedback
Redmi K90 Ultra
- Type
- AM-OLED display, 1073.7M colors, 165 Hz
- Size
- 6.8 inches
- Resolution
- 1280x2772 pixels (~447 PPI density), ~90.2% screen-to-body ratio
- Protection
- Yes
- Touch
- Capacitive multi-touch screen
- Notch/Hole
- 1-hole
iPhone Air 1st gen
- Type
- AM-OLED display, Super Retina XDR, 1073.7M colors, 120 Hz
- Size
- 6.6 inches
- Resolution
- 1260x2736 pixels (~460 PPI density), ~90.1% screen-to-body ratio
- Protection
- Ceramic Shield 2
- Touch
- Capacitive multi-touch screen
- Notch/Hole
- 1-hole
Redmi K90 Ultra
- OS
- Google Android 16 (Baklava)
- Chipset
- Qualcomm Snapdragon 8 Elite SM8750-AB (Sun) 3 nm
- CPU
- 4.32 GHz octa-core
- GPU
- Qualcomm Adreno 830 (1100 MHz)
iPhone Air 1st gen
- OS
- Apple iOS 26
- Chipset
- Apple A19 Pro L APL1V12 T8150 (Thera) 3 nm
- CPU
- 4.26 GHz hexa-core
- GPU
- Apple G18P MP5 (1470 MHz)
Redmi K90 Ultra
- Card slot
- No
- Internal
- 512GB 16GB RAM, 512GB 12GB RAM, 256GB 16GB RAM, 256GB 12GB RAM
- Interface
- UFS 4.1
iPhone Air 1st gen
- Card slot
- No
- Internal
- 1TB 12GB RAM, 1TB 12GB RAM, 512GB 12GB RAM, 256GB 12GB RAM
Redmi K90 Ultra
- Dual
50.1 MP, f/1.68, 24mm, 1.0 x optical zoom, BSI CMOS, 1.00µm, PD AF, EIS, EIS (video), OIS, Pixel unification, HDR photo, HDR video, Red-eye reduction, Slow motion video, Burst mode, Refocus, Touch focus, Macro mode, Panorama Photo, Face detection, Face tagging, Smile detection, Face retouch, Face retouch (video), Intelligent scene detection
8.0 MP, f/2.20, 15mm, (ultrawide), BSI CMOS, 1.12µm, HDR photo, HDR video, Slow motion video, Burst mode, Panorama Photo, Face detection, Face tagging, Smile detection, Face retouch, Face retouch (video), Intelligent scene detection
- Other features
- single LED flash
- Video
- 7680x4320 pixel
iPhone Air 1st gen
- Single
48.0 MP, f/1.60, 26mm, 1.0 x optical zoom, BSI CMOS, 1.00µm, PD AF, EIS (video), OIS, OIS (video), Pixel unification, HDR photo, HDR video, Red-eye reduction, Slow motion video, Burst mode, Touch focus, Macro mode, Panorama Photo, Face detection, Face tagging, Smile detection, Face retouch, Face retouch (video), Intelligent scene detection
- Other features
- single LED flash
- Video
- 3840x2160 pixel
Redmi K90 Ultra
- Single
20.2 MP, f/2.00, BSI CMOS, Pixel unification, HDR photo, HDR video, Slow motion video, Burst mode, Panorama Photo, Face detection, Face tagging, Smile detection, Face retouch, Face retouch (video), Intelligent scene detection
- Video
- 1920x1080 pixel
iPhone Air 1st gen
- Dual
18.0 MP, f/1.90, BSI CMOS, PD AF, EIS, EIS (video), HDR photo, HDR video, Slow motion video, Burst mode, Panorama Photo, Face detection, Smile detection, Face retouch, Face retouch (video), Intelligent scene detection
Mono CMOS sensor (depth/mono)
- Video
- 3840x2160 pixel
Redmi K90 Ultra
- Loudspeaker
- 3
- 3.5mm jack
- No
- Audio features
- Voice speakerSpeakerphoneANCHD VoiceVoLTEViLTE
iPhone Air 1st gen
- Loudspeaker
- mono
- 3.5mm jack
- No
- Audio features
- Voice speakerSpeakerphoneANCHD VoiceVoLTEViLTE
Redmi K90 Ultra
- WLAN
- 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac, 802.11ax, 802.11be
- Bluetooth
- Bluetooth 5.4
- Positioning
- Simultaneous GPSA-GPSDual-frequency GPSGeotaggingQuickGPSQZSSNavIC
- Satellite details
- GLONASS (L1OF); Galileo (E1, E5a); BeiDou (B1c, B1I, B2a BeiDou receiver)
- NFC
- Yes
- USB
- USB C reversible USB 2.0
- USB features
- USB chargingUSB fast chargingUSB HostUSB OTG 1.3USB OTG 2.0USB PDUSB PD 2.0USB PD 3.0
- Wireless features
- Miracast, Wi-Fi Direct, Wi-Fi Tethering, WiDi, Wi-Fi Calling
- IR
- Yes
iPhone Air 1st gen
- WLAN
- 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac, 802.11ax, 802.11be
- Bluetooth
- Bluetooth 6.0
- Positioning
- Simultaneous GPSA-GPSDual-frequency GPSGeotaggingQuickGPSQZSSNavICSatellite MessageSatellite SOS
- Satellite details
- GLONASS (L1OF); Galileo (E1); BeiDou (B1I BeiDou receiver)
- NFC
- Yes
- USB
- USB C reversible USB 2.0
- USB features
- USB chargingUSB fast chargingUSB HostUSB OTG 1.3USB PDUSB PD 2.0
- Wireless features
- UMA, Wi-Fi Calling
Redmi K90 Ultra
- Sensors
- AccelerometerGyroCompassIn-screen FP sensorL sensorP sensorStep counterNFC
- Software
- Voice CommandBusiness card recognitionNavigation softwareAugmented Reality (AR)Intelligent personal assistantVoice RecognitionFace Recognition
iPhone Air 1st gen
- Sensors
- AccelerometerGyroCompassBarometerL sensorP sensorStep counterIR face sensorNFC
- Software
- Voice CommandNavigation softwareAugmented Reality (AR)Intelligent personal assistantVoice RecognitionFace Recognition
Redmi K90 Ultra
- Type
- 8550 mAh battery Li-ion (Si-C)
- Charging
- 100.0 W charging wired
iPhone Air 1st gen
- Type
- 3149 mAh battery 12.25 Wh Li-ion
- Charging
- 18.0 W charging wired, 20.0 W wireless (Qi, MagSafe)
- Nominal Battery Voltage
- 3.89 Volts
Redmi K90 Ultra
- Models
- Redmi K90 Ultra 5G Standard Edition Dual SIM TD-LTE CN 512GB M332BF
- Price
- ¥4,199
- Market
- Asia
- Countries
- China
iPhone Air 1st gen
- Models
- iPhone Air 1st gen 5G A3517 Global Dual SIM TD-LTE 256GB
- Price
- 999
- Market
- AfricaAsiaAustraliaCentral AmericaEastern EuropeEuropeMiddle EastNorth AmericaOceaniaSouth AmericaSoutheast AsiaWestern EuropeWorldwide
- Countries
- Afghanistan, Algeria, Argentina +83 more
- SAR (head)
- 1.190 W/kg
- SAR (body)
- 1.190 W/kg
- 2nd highest SAR (head)
- 1.490 W/kg
- 2nd highest SAR (body)
- 1.490 W/kg