Product
Xiaomi Redmi K40 Pro+
Xiaomi Redmi K40 Pro+
Apple iPhone SE
Apple iPhone SE
Battery
Charging 33W wired, PD3.0, QC3, 100% in 52 min -
Stand-by - Up to 240 h (3G)
Talk time - Up to 14 h (3G)
Type Li-Po 4520 mAh Li-Po 1624 mAh, non-removable (6.21 Wh)
Body
Build - Glass front (Corning-made glass), aluminum back, aluminum frame
Dimensions 163.7 x 76.4 x 7.8 mm (6.44 x 3.01 x 0.31 in) 123.8 x 58.6 x 7.6 mm (4.87 x 2.31 x 0.30 in)
SIM Nano-SIM + Nano-SIM Nano-SIM
Weight 196 g (6.91 oz) 113 g (3.99 oz)
  IP53 dust protected and water resistant (vertical water sprays) Apple Pay (Visa, MasterCard, AMEX certified)
Comms
Bluetooth 5.2, A2DP, LE 4.2, A2DP, LE
Infrared port Yes -
NFC Yes Yes (Apple Pay only)
Positioning GPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5) GPS, GLONASS
Radio No No
USB USB Type-C 2.0, OTG Lightning, USB 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, hotspot
Display
Protection Corning Gorilla Glass 5 -
Resolution 1080 x 2400 pixels, 20:9 ratio (~395 ppi density) 640 x 1136 pixels, 16:9 ratio (~326 ppi density)
Size 6.67 inches, 107.4 cm2 (~85.9% screen-to-body ratio) 4.0 inches, 44.1 cm2 (~60.8% screen-to-body ratio)
Type Super AMOLED, 120Hz, HDR10+, 1300 nits (peak) IPS LCD
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer Fingerprint (front-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2021, February 25 2016, March 21. Released 2016, March 31
Status Available. Released 2021, March 04 Discontinued
Main Camera
Features Color spectrum sensor, LED flash, HDR, panorama Dual-LED dual-tone flash, HDR
Single - 12 MP, f/2.2, 29mm (standard), 1/3.0", 1.22µm, PDAF
Triple 108 MP, f/1.8, 26mm (wide), 1/1.52", 0.7µm, PDAF 8 MP, f/2.2, 119˚ (ultrawide) 5 MP, f/2.4, 50mm (macro), 1/5.0", 1.12µm -
Video 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS, HDR10+ 4K@30fps, 1080p@30/60fps, 1080p@120fps, 720p@240fps
Memory
Card slot No No
Internal 256GB 12GB RAM 16GB 2GB RAM, 32GB 2GB RAM, 64GB 2GB RAM, 128GB 2GB RAM
  UFS 3.1 NVMe
Misc
Colors Black, White, Aurora Space Gray, Silver, Gold, Rose Gold
Models - A1662, A1723, A1724, iPhone8,4
SAR - 1.17 W/kg (head)     1.19 W/kg (body)    
SAR EU - 0.72 W/kg (head)     0.97 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - A1662, A1723
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 - A1662, A1723
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 1, 2, 3, 4, 5, 8, 12, 13, 17, 18, 19, 20, 25, 26, 29 - A1662
5G bands 1, 3, 28, 41, 77, 78 SA/NSA/Sub6 -
Speed HSPA, LTE, 5G HSPA, LTE Cat4 150/50 Mbps
Technology GSM / CDMA / HSPA / CDMA2000 / LTE / 5G GSM / CDMA / HSPA / EVDO / LTE
  CDMA2000 1x 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 38, 39, 40, 41 - A1723
Platform
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Apple A9 (14 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) Dual-core 1.84 GHz Twister
GPU Adreno 660 PowerVR GT7600 (six-core graphics)
OS Android 11, MIUI 12 iOS 9.3.2, upgradable to iOS 15.8.4
Selfie camera
Features HDR Face detection, HDR, panorama
Single 20 MP, f/2.5, (wide), 1/3.4", 0.8µm 1.2 MP, f/2.4, 31mm (standard)
Video 1080p@30fps, 720p@120fps 720p@30fps
Sound
3.5mm jack No Yes
Loudspeaker Yes, with stereo speakers Yes
  24-bit/192kHz Hi-Res audio 16-bit/44.1kHz audio
Tests
Audio quality - Noise -93.0dB / Crosstalk -72.9dB
Battery (old) - Endurance rating 73h
Camera - Photo / Video
Display - Contrast ratio: 804:1 (nominal), 3.681 (sunlight)
Loudspeaker - Voice 66dB / Noise 65dB / Ring 69dB
Performance - Basemark OS II 2.0: 2163