Product
Oppo A7
Oppo A7
Samsung Galaxy F55
Samsung Galaxy F55
Battery
Charging - 45W wired
Type Li-Ion 4230 mAh, non-removable 5000 mAh
Body
Build Glass front (Gorilla Glass 3), plastic back, plastic frame Glass front, silicone polymer (eco leather) back, plastic frame
Dimensions 155.9 x 75.4 x 8.1 mm (6.14 x 2.97 x 0.32 in) 163.9 x 76.5 x 7.8 mm (6.45 x 3.01 x 0.31 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 168 g (5.93 oz) 180 g (6.35 oz)
Comms
Bluetooth 4.2, A2DP, LE 5.2, A2DP, LE
NFC No Yes
Positioning GPS, GLONASS, GALILEO, BDS GPS, GALILEO, GLONASS, BDS, QZSS
Radio FM radio No
USB microUSB 2.0, OTG USB Type-C 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 3 -
Resolution 720 x 1520 pixels, 19:9 ratio (~271 ppi density) 1080 x 2400 pixels, 20:9 ratio (~393 ppi density)
Size 6.2 inches, 95.9 cm2 (~81.6% screen-to-body ratio) 6.7 inches, 108.4 cm2 (~86.4% screen-to-body ratio)
Type IPS LCD Super AMOLED+, 120Hz, 1000 nits (HBM)
Features
Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2018, November. Released 2018, November 2024, May 17
Status Discontinued Available. Released 2024, May 27
Main Camera
Dual 13 MP, f/2.2, AF 2 MP, f/2.4, (depth) -
Features LED flash, HDR, panorama LED flash, panorama, HDR
Triple - 50 MP, f/1.8, (wide), 1/1.56", 1.0µm, PDAF, OIS 8 MP, f/2.2, 123˚ (ultrawide) 2 MP, f/2.4, (macro)
Video 1080p@30fps 4K@30fps, 1080p@30/60fps, gyro-EIS, OIS
Memory
Card slot microSDXC (dedicated slot) microSDXC (uses shared SIM slot)
Internal 32GB 3GB RAM, 64GB 3GB RAM, 64GB 4GB RAM 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
  eMMC 5.1 -
Misc
Colors Glazing Blue, Dazzling Gold, Rose Pink Black, Apricot
Models CPH1901, CPH1903, CPH1905, PBFM00, PBFT00 SM-E556B/DS, SM-E556B
SAR - 0.93 W/kg (head)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 - V1 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 38, 40, 41, 66
5G bands - 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6
Speed HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps HSPA, LTE, 5G
Technology GSM / HSPA / LTE GSM / HSPA / LTE / 5G
  1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 38, 39, 40, 41 - V3 -
Platform
Chipset Qualcomm SDM450 Snapdragon 450 (14 nm) Qualcomm SM7450-AB Snapdragon 7 Gen 1 (4 nm)
CPU Octa-core 1.8 GHz Cortex-A53 Octa-core (1x2.4 GHz Cortex-A710 & 3x2.36 GHz Cortex-A710 & 4x1.8 GHz Cortex-A510)
GPU Adreno 506 Adreno 644
OS Android 8.1 (Oreo), ColorOS 5.2 Android 14, upgradable to Android 15, One UI 7
Selfie camera
Features HDR -
Single 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm 50 MP, f/2.4, (wide)
Video 1080p@30fps 4K@30fps, 1080p@30/60fps
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes, with stereo speakers