Product
OnePlus 7
OnePlus 7
Samsung Galaxy M55s
Samsung Galaxy M55s
Battery
Charging 20W wired 45W wired
Type Li-Po 3700 mAh, non-removable 5000 mAh
Body
Build Glass front (Gorilla Glass 6), glass back (Gorilla Glass 5), aluminum frame -
Dimensions 157.7 x 74.8 x 8.2 mm (6.21 x 2.94 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 182 g (6.42 oz) 180 g (6.35 oz)
Comms
Bluetooth 5.0, A2DP, LE, aptX HD 5.2, A2DP, LE
NFC Yes Yes
Positioning GPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a) GPS, GALILEO, GLONASS, BDS, QZSS
Radio No No
USB USB Type-C 3.1, OTG USB Type-C 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 6 -
Resolution 1080 x 2340 pixels, 19.5:9 ratio (~402 ppi density) 1080 x 2400 pixels, 20:9 ratio (~393 ppi density)
Size 6.41 inches, 100.9 cm2 (~85.5% screen-to-body ratio) 6.7 inches, 108.4 cm2 (~86.4% screen-to-body ratio)
Type Optic AMOLED, HDR10 Super AMOLED+, 120Hz, 1000 nits (HBM)
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2019, May 14 2024, September 24
Status Available. Released 2019, June 04 Available. Released 2024, September 26
Main Camera
Dual 48 MP, f/1.7, (wide), 1/2.0", 0.8µm, PDAF, OIS 5 MP, f/2.4, (depth) -
Features Dual-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 4K@30/60fps, 1080p@30/60/240fps, 720p@480fps, Auto HDR, gyro-EIS 4K@30fps, 1080p@30/60fps, gyro-EIS, OIS
Memory
Card slot No microSDXC (uses shared SIM slot)
Internal 128GB 6GB RAM, 256GB 8GB RAM, 256GB 12GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  UFS 3.0 -
Misc
Colors Mirror Gray, Red, Mirror Blue Thunder Black, Coral Green
Models GM1901, GM1900, GM1905, GM1903 SM-M558B, SM-M558B/DS
SAR - 0.93 W/kg (head)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 29, 32, 34, 38, 39, 40, 41 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 (5CA) Cat16 1024/150 Mbps HSPA, LTE, 5G
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE / 5G
  CDMA 800 / 1900 & TD-SCDMA -
Our Tests
Battery (old) Endurance rating 102h -
Camera Photo / Video -
Display 642 nits max brightness (measured) -
Loudspeaker Voice 68dB / Noise 73dB / Ring 82dB -
Performance AnTuTu: 367812 (v7) GeekBench: 11075 (v4.4) GFXBench: 36fps (ES 3.1 onscreen) -
Platform
Chipset Qualcomm SM8150 Snapdragon 855 (7 nm) Qualcomm SM7450-AB Snapdragon 7 Gen 1 (4 nm)
CPU Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) Octa-core (1x2.4 GHz Cortex-A710 & 3x2.36 GHz Cortex-A710 & 4x1.8 GHz Cortex-A510)
GPU Adreno 640 Adreno 644
OS Android 9.0 (Pie), upgradable to Android 12, OxygenOS 12.1 Android 14, up to 4 major Android upgrades, One UI 6.1
Selfie camera
Features HDR -
Single 16 MP, f/2.0, 25mm (wide), 1/3.06", 1.0µm 50 MP, f/2.4, (wide)
Video 1080p@30fps, gyro-EIS 4K@30fps, 1080p@30/60fps
Sound
3.5mm jack No No
Loudspeaker Yes, with stereo speakers Yes, with stereo speakers