Product
Oppo A9x
Oppo A9x
Apple iPhone 4s
Apple iPhone 4s
Battery
Charging 20W wired -
Stand-by - Up to 200 h (3G)
Talk time - Up to 8 h (3G)
Type Li-Po 4020 mAh, non-removable Li-Po 1432 mAh, non-removable (5.3 Wh)
Body
Build - Glass front (Corning-made glass), glass back, stainless steel frame
Dimensions 162 x 76.1 x 8.3 mm (6.38 x 3.00 x 0.33 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 190 g (6.70 oz) 140 g (4.94 oz)
  - Scratch-resistant glass back panel
Comms
Bluetooth 4.2, A2DP, LE 4.0, A2DP, LE
NFC Yes -
Positioning GPS, GLONASS, BDS GPS, A-GPS, GLONASS
Radio FM radio No
USB microUSB 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 2340 pixels, 19.5:9 ratio (~395 ppi density) 640 x 960 pixels, 3:2 ratio (~330 ppi density)
Size 6.53 inches, 104.7 cm2 (~84.9% screen-to-body ratio) 3.5 inches, 36.5 cm2 (~54.0% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Accelerometer, gyro, proximity, compass
Launch
Announced 2019, May. Released 2019, May 2011, October 04. Released 2011, October 14
Status Discontinued Discontinued
Main Camera
Dual 48 MP, f/1.7, (wide), 1/2.0", 0.8µm, PDAF 2 MP, f/2.4, (depth) -
Features Dual-LED dual-tone flash, panorama, HDR LED flash, panorama, HDR
Single - 8 MP, f/2.4, 35mm (standard), 1/3.2", 1.4µm, AF
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 128GB 6GB RAM 8GB 512MB RAM, 16GB 512MB RAM, 32GB 512MB RAM, 64GB 512MB RAM
  eMMC 5.1 -
Misc
Colors Meteorite Black, Ice Jade White Black, White
Models PCEM00 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 / 1700(AWS) / 1800 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 4, 5, 8, 34, 38, 39, 40, 41 -
Speed HSPA, LTE HSPA 14.4/5.76 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / EVDO
  CDMA 800 & TD-SCDMA CDMA2000 1xEV-DO
Platform
Chipset Mediatek MT6771V Helio P70 (12 nm) Apple A5 (45 nm)
CPU Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) Dual-core 1.0 GHz Cortex-A9
GPU Mali-G72 MP3 PowerVR SGX543MP2
OS Android 9.0 (Pie), ColorOS 6 iOS 5, upgradable to iOS 9.3.6
Selfie camera
Features HDR -
Single 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm VGA, videocalling over Wi-Fi and 3G
Video 1080p@30fps 480p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes 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