Product
Samsung Galaxy M51
Samsung Galaxy M51
Samsung Galaxy A15
Samsung Galaxy A15
Battery
Charging 25W wired, 100% in 115 minReverse wired 25W wired
Type Li-Po 7000 mAh 5000 mAh
Body
Build Glass front (Gorilla Glass 3+), plastic back, plastic frame Glass front, plastic back, plastic frame
Dimensions 163.9 x 76.3 x 9.5 mm (6.45 x 3.00 x 0.37 in) 160.1 x 76.8 x 8.4 mm (6.30 x 3.02 x 0.33 in)
SIM Nano-SIM + Nano-SIM Nano-SIMNano-SIM + Nano-SIM
Weight 213 g (7.51 oz) 200 g (7.05 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.3, A2DP, LE
NFC Yes Yes (market/region dependent)
Positioning GPS, GLONASS, GALILEO, BDS GPS, GALILEO, GLONASS, BDS, QZSS
Radio FM radio, RDS FM radio (market/region dependent)
USB USB Type-C 2.0, OTG USB Type-C 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, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 3+ -
Resolution 1080 x 2400 pixels, 20:9 ratio (~393 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~396 ppi density)
Size 6.7 inches, 108.4 cm2 (~86.7% screen-to-body ratio) 6.5 inches, 103.7 cm2 (~84.3% screen-to-body ratio)
Type Super AMOLED Plus Super AMOLED, 90Hz, 800 nits (HBM)
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Fingerprint (side-mounted), accelerometer, compass
  - Virtual proximity sensing
Launch
Announced 2020, August 31 2023, December 11
Status Available. Released 2020, September 11 Available. Released 2023, December 16
Main Camera
Features LED flash, panorama, HDR LED flash, panorama, HDR
Quad 64 MP, f/1.8, 26mm (wide), 1/1.73", 0.8µm, PDAF12 MP, f/2.2, 123˚ (ultrawide)5 MP, f/2.4, (macro)5 MP, f/2.4, (depth) -
Triple - 50 MP, f/1.8, 26mm (wide), 1/2.8", 0.64µm, PDAF 5 MP, f/2.2, 17mm (ultrawide), 1/5.0", 1.12µm 2 MP, f/2.4, (macro)
Video 4K@30fps, 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (uses shared SIM slot)
Internal 128GB 6GB RAM, 128GB 8GB RAM 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM
Misc
Colors Celestial Black, Electric Blue, White Brave Black, Optimistic Blue, Magical Blue, Personality Yellow
Models SM-M515F, SM-M515F/DSN SM-A155F, SM-A155F/DSN, SM-A155M, SM-A155M/DS, SM-A155P, SM-A155R
SAR 1.38 W/kg (head)     -
SAR EU 0.61 W/kg (head)     1.45 W/kg (body)     0.42 W/kg (head)     1.29 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 66 1, 3, 5, 7, 8, 20, 28, 38, 40, 41
Speed HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 400/50 Mbps HSPA, LTE
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Platform
Chipset Qualcomm SDM730 Snapdragon 730G (8 nm) Mediatek Helio G99 (6 nm)
CPU Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver) Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Adreno 618 Mali-G57 MC2
OS Android 10, upgradable to Android 12, One UI 4.1 Android 14, up to 4 major Android upgrades, One UI 7
Selfie camera
Features HDR -
Single 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm 13 MP, f/2.0, 26mm (wide), 1/3.06", 1.12µm
Video 4K@30fps, 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
Tests
Battery (new) - Active use score 15:28h
Battery (old) Endurance rating 156h -
Camera Photo / Video -
Display 677 nits max brightness (measured) 808 nits max brightness (measured)
Loudspeaker -28.5 LUFS (Average) -25.5 LUFS (Very good)
Performance AnTuTu: 266620 (v8)GeekBench: 1774 (v5.1)GFXBench: 15fps (ES 3.1 onscreen) AnTuTu: 316967 (v9), 375314 (v10) GeekBench: 1928 (v5), 1936 (v6) 3DMark: 338 (Wild Life Extreme)