Product
Oppo F21 Pro
Oppo F21 Pro
Apple iPhone 6s
Apple iPhone 6s
Battery
Charging 33W wired, 100% in 60 min Reverse wired -
Stand-by - Up to 240 h (3G)
Talk time - Up to 14 h (3G)
Type Li-Po 4500 mAh Li-Ion 1715 mAh, non-removable (6.91 Wh)
Body
Build - Glass front (Corning-made glass), aluminum back, aluminum frame
Dimensions 159.9 x 73.2 x 7.5 mm (6.30 x 2.88 x 0.30 in) 138.3 x 67.1 x 7.1 mm (5.44 x 2.64 x 0.28 in)
SIM Nano-SIM + Nano-SIM Nano-SIM
Weight 175 g (6.17 oz) 143 g (5.04 oz)
  IPX4 water resistant RGB ring light around the camera (notifications, charging progress) Apple Pay (Visa, MasterCard, AMEX certified)
Comms
Bluetooth 5.1, A2DP, LE, aptX HD 4.2, A2DP, LE
NFC No Yes (Apple Pay only)
Positioning GPS, GLONASS, BDS, GALILEO, QZSS GPS, GLONASS, GALILEO, QZSS
Radio No No
USB USB Type-C 2.0, OTG 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/ac, dual-band, hotspot
Display
Protection Corning Gorilla Glass 5 Ion-strengthened glass, oleophobic coating
Resolution 1080 x 2400 pixels, 20:9 ratio (~409 ppi density) 750 x 1334 pixels, 16:9 ratio (~326 ppi density)
Size 6.43 inches, 99.8 cm2 (~85.3% screen-to-body ratio) 4.7 inches, 60.9 cm2 (~65.6% screen-to-body ratio)
Type AMOLED, 90Hz, 430 nits (typ), 600 nits (HBM), 800 nits (peak) IPS LCD, 500 nits
  - 3D Touch
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer
Launch
Announced 2022, April 12 2015, September 09. Released 2015, September 25
Status Available. Released 2022, April 15 Discontinued
Main Camera
Features 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 64 MP, f/1.7, 26mm (wide), 1/2.0", 0.7µm, PDAF 2 MP, f/3.3, (microscope) 2 MP, f/2.4, (depth) -
Video 1080p@30fps, gyro-EIS 4K@30fps, 1080p@60fps,1080p@120fps, 720p@240fps
Memory
Card slot microSDXC No
Internal 128GB 8GB RAM 16GB 2GB RAM, 32GB 2GB RAM, 64GB 2GB RAM, 128GB 2GB RAM
  UFS 2.2 -
Misc
Colors Cosmic Black, Sunset Orange, Dawnlight Gold, Starlight Black Space Gray, Silver, Gold, Rose Gold
Models CPH2363, CPH2461 A1633, A1688, A1691, A1700, iPhone8,1
SAR - 1.14 W/kg (head)     1.14 W/kg (body)    
SAR EU - 0.87 W/kg (head)     0.98 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700 / 1900 / 2100
4G bands 1, 3, 5, 8, 38, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29 - A1688
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps, EV-DO Rev.A 3.1 Mbps
Technology GSM / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
  - 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41 - A1687
Our Tests
Battery (old) Endurance rating 127h -
Display Contrast ratio: Infinite (nominal) -
Loudspeaker -29.7 LUFS (Average) -
Performance AnTuTu: 289250 (v9) GeekBench: 1653 (v5.1) GFXBench: 7.2fps (ES 3.1 onscreen) -
Platform
Chipset Qualcomm SM6225 Snapdragon 680 4G (6 nm) Apple A9 (14/16 nm - maker dependant)
CPU Octa-core (4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver) Dual-core 1.84 GHz Twister
GPU Adreno 610 PowerVR GT7600 (six-core graphics)
OS Android 12, upgradable to Android 14, ColorOS 14 iOS 9, upgradable to iOS 15.8.4
Selfie camera
Features Panorama, HDR Face detection, HDR, panorama
Single 32 MP, f/2.4, 24mm (wide), 1/2.74", 0.8µm 5 MP, f/2.2, 31mm (standard)
Video 1080p@30fps, gyro-EIS 720p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
  - 16-bit/44.1kHz audio
Tests
Audio quality - Noise -93.8dB / Crosstalk -73.2dB
Battery (old) - Endurance rating 62h
Camera - Photo / Video
Display - Contrast ratio: 1481 (nominal), 3.783 (sunlight)
Loudspeaker - Voice 66dB / Noise 64dB / Ring 65dB
Performance - Basemark OS II 2.0: 2195