Product
Xiaomi Redmi K30i 5G
Xiaomi Redmi K30i 5G
Apple iPhone 4s
Apple iPhone 4s
Battery
Charging 30W wired -
Stand-by - Up to 200 h (3G)
Talk time - Up to 8 h (3G)
Type Li-Po 4500 mAh Li-Po 1432 mAh, non-removable (5.3 Wh)
Body
Build Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame Glass front (Corning-made glass), glass back, stainless steel frame
Dimensions 165.3 x 76.6 x 8.8 mm (6.51 x 3.02 x 0.35 in) 115.2 x 58.6 x 9.3 mm (4.54 x 2.31 x 0.37 in)
SIM Nano-SIM + Nano-SIM Micro-SIM
Weight 208 g (7.34 oz) 140 g (4.94 oz)
  - Scratch-resistant glass back panel
Comms
Bluetooth 5.1, A2DP, LE, aptX HD 4.0, A2DP, LE
Infrared port Yes -
NFC Yes -
Positioning GPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5) GPS, A-GPS, GLONASS
Radio Unspecified No
USB USB Type-C 2.0, OTG 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 b/g/n, hotspot
Display
Protection Corning Gorilla Glass 5 Corning Gorilla Glass, oleophobic coating
Resolution 1080 x 2400 pixels, 20:9 ratio (~395 ppi density) 640 x 960 pixels, 3:2 ratio (~330 ppi density)
Size 6.67 inches, 107.4 cm2 (~84.8% screen-to-body ratio) 3.5 inches, 36.5 cm2 (~54.0% screen-to-body ratio)
Type IPS LCD, 120Hz, HDR10 IPS LCD
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Accelerometer, gyro, proximity, compass
Launch
Announced 2020, May 25 2011, October 04. Released 2011, October 14
Status Available. Released 2020, June 07 Discontinued
Main Camera
Features Dual-LED flash, HDR, panorama LED flash, panorama, HDR
Quad 48 MP, f/1.9, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 120˚ (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) -
Single - 8 MP, f/2.4, 35mm (standard), 1/3.2", 1.4µm, AF
Video 4K@30fps, 1080p@30fps; gyro-EIS 1080p@30fps
Memory
Card slot No No
Internal 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM 8GB 512MB RAM, 16GB 512MB RAM, 32GB 512MB RAM, 64GB 512MB RAM
  UFS 2.1 -
Misc
Colors Blue, White, Red, Purple Black, White
Models - A1431, A1387, iPhone4,1
SAR - 1.18 W/kg (head)     0.98 W/kg (body)    
SAR EU - 0.99 W/kg (head)     0.99 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 5, 7, 8, 34, 38, 39, 40, 41 -
5G bands 41, 78 Sub6 -
Speed HSPA, LTE, 5G (2+ Gbps DL) HSPA 14.4/5.76 Mbps
Technology GSM / HSPA / LTE / 5G GSM / CDMA / HSPA / EVDO
  - CDMA2000 1xEV-DO
Platform
Chipset Qualcomm SM7250 Snapdragon 765G 5G (7 nm) Apple A5 (45 nm)
CPU Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver) Dual-core 1.0 GHz Cortex-A9
GPU Adreno 620 PowerVR SGX543MP2
OS Android 10, MIUI 11 iOS 5, upgradable to iOS 9.3.6
Selfie camera
Dual 20 MP, f/2.2, 27mm (wide), 1/3.4", 0.8µm 2 MP, f/2.4, 1/5.0", 1.75µm, depth sensor -
Features HDR -
Single - VGA, videocalling over Wi-Fi and 3G
Video 1080p@30fps 480p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
  24-bit/192kHz Hi-Res audio -
Tests
Audio quality - Noise -91.2dB / Crosstalk -93.0dB
Battery (old) - Endurance rating 45h
Camera - Photo / Video
Display - Contrast ratio: 1261:1 (nominal) / 2.269:1 (sunlight)
Loudspeaker - Voice 65dB / Noise 64dB / Ring 74dB