Product
Samsung Galaxy M51
Samsung Galaxy M51
Samsung Galaxy M22
Samsung Galaxy M22
Battery
Charging 25W wired, 100% in 115 minReverse wired 25W wired
Type Li-Po 7000 mAh Li-Po 5000 mAh
Body
Build Glass front (Gorilla Glass 3+), plastic back, plastic frame Glass front, plastic frame, plastic back
Dimensions 163.9 x 76.3 x 9.5 mm (6.45 x 3.00 x 0.37 in) 159.9 x 74 x 8.4 mm (6.30 x 2.91 x 0.33 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 213 g (7.51 oz) 186 g (6.56 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
NFC Yes Yes
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, GALILEO, BDS
Radio FM radio, RDS Unspecified
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) 720 x 1600 pixels, 20:9 ratio (~274 ppi density)
Size 6.7 inches, 108.4 cm2 (~86.7% screen-to-body ratio) 6.4 inches, 98.9 cm2 (~83.6% screen-to-body ratio)
Type Super AMOLED Plus Super AMOLED, 90Hz, 600 nits (HDR)
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Fingerprint (side-mounted), unspecified sensors
Launch
Announced 2020, August 31 2021, September 14
Status Available. Released 2020, September 11 Available. Released 2021, October 13
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) 48 MP, f/2.0, (wide), PDAF, OIS 8 MP, f/2.2, 123˚ (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth)
Video 4K@30fps, 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 128GB 6GB RAM, 128GB 8GB RAM 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
  - eMMC 5.1
Misc
Colors Celestial Black, Electric Blue, White Black, White, Light Blue
Models SM-M515F, SM-M515F/DSN SM-M225FV, SM-M225FV/DS
SAR 1.38 W/kg (head)     -
SAR EU 0.61 W/kg (head)     1.45 W/kg (body)     0.62 W/kg (head)     1.24 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 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 66 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 66
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 MT6769V/CU Helio G80 (12 nm)
CPU Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver) Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Adreno 618 Mali-G52 MC2
OS Android 10, upgradable to Android 12, One UI 4.1 Android 11, upgradable to Android 13, One UI Core 5.1
Selfie camera
Features HDR -
Single 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm 13 MP, f/2.2, (wide), 1/3.1", 1.12µm
Video 4K@30fps, 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
Tests
Battery (old) Endurance rating 156h -
Camera Photo / Video -
Display 677 nits max brightness (measured) -
Loudspeaker -28.5 LUFS (Average) -
Performance AnTuTu: 266620 (v8)GeekBench: 1774 (v5.1)GFXBench: 15fps (ES 3.1 onscreen) -