Product
Oppo K12x (China)
Oppo K12x (China)
Apple iPhone 4s
Apple iPhone 4s
Battery
Charging 80W wired, PD3.0, 100% in 50 min -
Stand-by - Up to 200 h (3G)
Talk time - Up to 8 h (3G)
Type 5500 mAh Li-Po 1432 mAh, non-removable (5.3 Wh)
Body
Build Glass front, plastic frame, plastic back Glass front (Corning-made glass), glass back, stainless steel frame
Dimensions 162.9 x 75.6 x 8.1 mm (6.41 x 2.98 x 0.32 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 191 g (6.74 oz) 140 g (4.94 oz)
  - Scratch-resistant glass back panel
Comms
Bluetooth Yes 4.0, A2DP, LE
NFC No -
Positioning GPS, GALILEO, GLONASS, BDS, QZSS GPS, A-GPS, GLONASS
Radio No No
USB USB Type-C 2.0 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band Wi-Fi 802.11 b/g/n, hotspot
Display
Protection - 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 (~87.2% screen-to-body ratio) 3.5 inches, 36.5 cm2 (~54.0% screen-to-body ratio)
Type OLED, 120Hz, 600 nits (typ), 1200 nits (HBM), 2100 nits (peak) IPS LCD
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Accelerometer, gyro, proximity, compass
Launch
Announced 2024, March 14 2011, October 04. Released 2011, October 14
Status Available. Released 2024, May 20 Discontinued
Main Camera
Dual 50 MP, f/1.8, (wide), 1/2.76", PDAF 2 MP, f/2.4, (depth) -
Features LED flash, HDR, panorama LED flash, panorama, HDR
Single - 8 MP, f/2.4, 35mm (standard), 1/3.2", 1.4µm, AF
Video 1080p@30fps, gyro-EIS 1080p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM 8GB 512MB RAM, 16GB 512MB RAM, 32GB 512MB RAM, 64GB 512MB RAM
  UFS 2.2 -
Misc
Colors Gray, Light Green Black, White
Models PJT110 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 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41 -
5G bands 1, 5, 8, 28, 41, 77, 78 SA/NSA -
Speed HSPA, LTE, 5G HSPA 14.4/5.76 Mbps
Technology GSM / CDMA / HSPA / LTE / 5G GSM / CDMA / HSPA / EVDO
  CDMA 800 CDMA2000 1xEV-DO
Platform
Chipset Qualcomm SM6375 Snapdragon 695 5G (6 nm) Apple A5 (45 nm)
CPU Octa-core (2x2.2 GHz Kryo 660 Gold & 6x1.7 GHz Kryo 660 Silver) Dual-core 1.0 GHz Cortex-A9
GPU Adreno 619 PowerVR SGX543MP2
OS Android 14, ColorOS 14 iOS 5, upgradable to iOS 9.3.6
Selfie camera
Features Panorama -
Single 16 MP, f/2.4, (wide) VGA, videocalling over Wi-Fi and 3G
Video 1080p@30fps 480p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes, with stereo speakers Yes
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