Product
Samsung Galaxy M31s
Samsung Galaxy M31s
₹22,999
Samsung Galaxy M55s
Samsung Galaxy M55s
₹28,999
Battery
Charging 25W wired4.5W reverse wired 45W wired
Type Li-Po 6000 mAh 5000 mAh
Body
Dimensions 159.3 x 74.4 x 9.3 mm (6.27 x 2.93 x 0.37 in) 163.9 x 76.5 x 7.8 mm (6.45 x 3.01 x 0.31 in)
SIM Nano-SIMNano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 203 g (7.16 oz) 180 g (6.35 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.2, A2DP, LE
NFC Yes (market/region dependent) Yes
Positioning GPS, GLONASS, GALILEO, BDS GPS, GALILEO, GLONASS, BDS, QZSS
Radio FM radio, RDS, recording No
USB USB Type-C 2.0, OTG USB Type-C 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, 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 1080 x 2400 pixels, 20:9 ratio (~405 ppi density) 1080 x 2400 pixels, 20:9 ratio (~393 ppi density)
Size 6.5 inches, 102.0 cm2 (~86.1% screen-to-body ratio) 6.7 inches, 108.4 cm2 (~86.4% screen-to-body ratio)
Type Super AMOLED Super AMOLED+, 120Hz, 1000 nits (HBM)
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
  Virtual proximity sensing -
Launch
Announced 2020, July 30 2024, September 24
Status Available. Released 2020, August 06 Available. Released 2024, September 26
Main Camera
Features LED flash, panorama, HDR LED flash, panorama, HDR
Triple 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) 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@30fps, 1080p@30fps, gyro-EIS 4K@30fps, 1080p@30/60fps, gyro-EIS, OIS
Memory
Card slot microSDXC (dedicated slot) microSDXC (uses shared SIM slot)
Internal 128GB 6GB RAM, 128GB 8GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  UFS 2.1 -
Misc
Colors Mirage Black, Mirage Blue Thunder Black, Coral Green
Models SM-M317F, SM-M317F/DS SM-M558B, SM-M558B/DS
SAR 1.38 W/kg (head)     0.93 W/kg (head)    
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, 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, LTE HSPA, LTE, 5G
Technology GSM / HSPA / LTE GSM / HSPA / LTE / 5G
Platform
Chipset Exynos 9611 (10 nm) Qualcomm SM7450-AB Snapdragon 7 Gen 1 (4 nm)
CPU Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) Octa-core (1x2.4 GHz Cortex-A710 & 3x2.36 GHz Cortex-A710 & 4x1.8 GHz Cortex-A510)
GPU Mali-G72 MP3 Adreno 644
OS Android 10, upgradable to Android 12, One UI 4.1 Android 14, up to 4 major Android upgrades, One UI 6.1
Selfie camera
Features HDR -
Single 32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm 50 MP, f/2.4, (wide)
Video 4K@30fps, 1080p@30fps 4K@30fps, 1080p@30/60fps
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes, with stereo speakers
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