Product
Xiaomi Poco X3 Pro
Xiaomi Poco X3 Pro
Apple iPhone 4s
Apple iPhone 4s
Battery
Charging 33W wired, 59% in 30 min, 100% in 59 min -
Stand-by - Up to 200 h (3G)
Talk time - Up to 8 h (3G)
Type Li-Po 5160 mAh Li-Po 1432 mAh, non-removable (5.3 Wh)
Body
Build Glass front (Gorilla Glass 6), plastic back Glass front (Corning-made glass), glass back, stainless steel frame
Dimensions 165.3 x 76.8 x 9.4 mm (6.51 x 3.02 x 0.37 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 215 g (7.58 oz) 140 g (4.94 oz)
  IP53 dust protected and water resistant (vertical water sprays) Scratch-resistant glass back panel
Comms
Bluetooth 5.0, A2DP, LE 4.0, A2DP, LE
Infrared port Yes -
NFC Yes (market/region dependent) -
Positioning GPS, GLONASS, GALILEO, BDS GPS, A-GPS, GLONASS
Radio FM radio, recording 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 6 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 (~84.6% screen-to-body ratio) 3.5 inches, 36.5 cm2 (~54.0% screen-to-body ratio)
Type IPS LCD, 120Hz, 2404Hz PWM, HDR10, 450 nits (typ) IPS LCD
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Accelerometer, gyro, proximity, compass
Launch
Announced 2021, March 22 2011, October 04. Released 2011, October 14
Status Available. Released 2021, March 24 Discontinued
Main Camera
Features Dual-LED flash, HDR, panorama LED flash, panorama, HDR
Quad 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 119˚ (ultrawide), 1.0µm 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@30/60/120/240fps, 1080p@960fps, gyro-EIS 1080p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM 8GB 512MB RAM, 16GB 512MB RAM, 32GB 512MB RAM, 64GB 512MB RAM
  UFS 3.1 -
Misc
Colors Phantom Black, Frost Blue, Metal Bronze Black, White
Models M2102J20SG, M2102J20SI A1431, A1387, iPhone4,1
SAR 0.99 W/kg (head)     0.67 W/kg (body)     1.18 W/kg (head)     0.98 W/kg (body)    
SAR EU 0.57 W/kg (head)     0.90 W/kg (body)     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 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41 - International -
Speed HSPA, LTE (CA) HSPA 14.4/5.76 Mbps
Technology GSM / HSPA / LTE GSM / CDMA / HSPA / EVDO
  1, 2, 3, 5, 8, 38, 40, 41 - India CDMA2000 1xEV-DO
Our Tests
Battery (old) Endurance rating 112h -
Camera Photo / Video -
Display Contrast ratio: 1401:1 (nominal) -
Loudspeaker -26.1 LUFS (Good) -
Performance AnTuTu: 453223 (v8) GeekBench: 2574 (v5.1) GFXBench: 38fps (ES 3.1 onscreen) -
Platform
Chipset Qualcomm Snapdragon 860 (7 nm) Apple A5 (45 nm)
CPU Octa-core (1x2.96 GHz Kryo 485 Gold & 3x2.42 GHz Kryo 485 Gold & 4x1.78 GHz Kryo 485 Silver) Dual-core 1.0 GHz Cortex-A9
GPU Adreno 640 PowerVR SGX543MP2
OS Android 11, upgradable to Android 12, MIUI 13 for POCO iOS 5, upgradable to iOS 9.3.6
Selfie camera
Features HDR, panorama -
Single 20 MP, f/2.2, (wide), 1/3.4", 0.8µm VGA, videocalling over Wi-Fi and 3G
Video 1080p@30fps 480p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes, with stereo speakers 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