Product
Realme X3
Realme X3
Apple iPhone 5s
Apple iPhone 5s
Battery
Charging 30W wired, 100% in 55 min -
Stand-by - Up to 250 h (3G)
Talk time - Up to 10 h (3G)
Type 4200 mAh Li-Po 1560 mAh, non-removable (5.92 Wh)
Body
Build Glass front (Gorilla Glass 5), glass back, plastic frame Glass front (Corning-made glass), aluminum back, aluminum frame
Dimensions 163.8 x 75.8 x 8.9 mm (6.45 x 2.98 x 0.35 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 202 g (7.13 oz) 112 g (3.95 oz)
Comms
Bluetooth 5.0, A2DP, LE 4.0, A2DP
NFC No No
Positioning GPS (L1+L5), GLONASS, BDS, GALILEO, QZSS GPS, GLONASS
Radio No No
USB USB Type-C 2.0 Lightning, USB 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n, dual-band, hotspot
Display
Protection Corning Gorilla Glass 5 Corning Gorilla Glass, oleophobic coating
Resolution 1080 x 2400 pixels, 20:9 ratio (~399 ppi density) 640 x 1136 pixels, 16:9 ratio (~326 ppi density)
Size 6.6 inches, 105.2 cm2 (~84.7% screen-to-body ratio) 4.0 inches, 44.1 cm2 (~60.8% screen-to-body ratio)
Type IPS LCD, 120Hz IPS LCD
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Fingerprint (front-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2020, June 25 2013, September 10. Released 2013, September 20
Status Available. Released 2020, June 30 Discontinued
Main Camera
Features LED flash, HDR, panorama Dual-LED dual-tone flash, HDR
Quad 64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF 12 MP, f/2.5, 51mm (telephoto), PDAF, 2x optical zoom 8 MP, f/2.3, 119˚, 16mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) -
Single - 8 MP, f/2.2, 29mm (standard), 1/3.0", 1.5µm, AF
Video 4K@30/60fps, 1080p@30/60fps, 720p@960fps; gyro-EIS 1080p@30fps, 720p@120fps
Memory
Card slot No No
Internal 128GB 6GB RAM, 128GB 8GB RAM 16GB 1GB RAM, 32GB 1GB RAM, 64GB 1GB RAM
  UFS 3.0 -
Misc
Colors Glacier Blue, Arctic White Space Gray, White/Silver, Gold
Models RMX2142, RMX2081, RMX2085, RMX2083 A1453, A1457, A1518, A1528, A1530, A1533, iPhone6,1, iPhone6,2
SAR - 1.12 W/kg (head)     1.18 W/kg (body)    
SAR EU - 1.00 W/kg (head)     0.80 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - all models
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700 / 1900 / 2100 - A1533 (GSM), A1453
4G bands 1, 3, 5, 8, 38, 39, 40, 41 1, 2, 3, 4, 5, 8, 13, 17, 19, 20, 25 - A1533 GSM, A1533 CDMA
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE Cat3 100/50 Mbps, EV-DO Rev.A 3.1 Mbps
Technology GSM / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
  - 1, 2, 3, 5, 7, 8, 20, 38, 39, 40 - A1530
Platform
Chipset Qualcomm SM8150 Snapdragon 855+ (7 nm) Apple A7 (28 nm)
CPU Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) Dual-core 1.3 GHz Cyclone (ARM v8-based)
GPU Adreno 640 (700 MHz) PowerVR G6430 (quad-core graphics)
OS Android 10, upgradable to Android 11, Realme UI 2.0 iOS 7, upgradable to iOS 12.5.7
Selfie camera
Dual 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm 8 MP, f/2.2, 105˚ (ultrawide), 1/4.0", 1.12µm -
Features Panorama face detection, HDR, FaceTime over Wi-Fi or Cellular
Single - 1.2 MP, f/2.4, 31mm (standard)
Video 1080p@30fps, gyro-EIS 720p@30fps
Sound
3.5mm jack No Yes
Loudspeaker Yes Yes
  24-bit/192kHz Hi-Res audio 16-bit/44.1kHz audio
Tests
Audio quality - Noise -93.6dB / Crosstalk -90.3dB
Battery (old) - Endurance rating 54h
Camera - Photo / Video
Display - Contrast ratio: 1219:1 (nominal) / 3.565:1 (sunlight)
Loudspeaker - Voice 68dB / Noise 66dB / Ring 69dB
Performance - Basemark X: 14341