Product
Samsung Galaxy M31
Samsung Galaxy M31
Samsung Galaxy A03
Samsung Galaxy A03
Battery
Charging 15W wired -
Type Li-Po 6000 mAh Li-Po 5000 mAh
Body
Build Glass front (Gorilla Glass 3), plastic back, plastic frame Glass front, plastic back, plastic frame
Dimensions 159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in) 164.2 x 75.9 x 9.1 mm (6.46 x 2.99 x 0.36 in)
SIM Nano-SIM + Nano-SIM Nano-SIMNano-SIM + Nano-SIM
Weight 191 g (6.74 oz) 196 g (6.91 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
NFC Yes (market/region dependent) No
Positioning GPS, GLONASS, GALILEO, BDS GPS
Radio FM radio, RDS, recording Unspecified
USB USB Type-C 2.0 microUSB 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 2340 pixels, 19.5:9 ratio (~403 ppi density) 720 x 1600 pixels, 20:9 ratio (~270 ppi density)
Size 6.4 inches, 100.5 cm2 (~84.1% screen-to-body ratio) 6.5 inches, 102.0 cm2 (~81.8% screen-to-body ratio)
Type Super AMOLED, 420 nits (peak) PLS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, compass Accelerometer, proximity
  Virtual proximity sensing -
Launch
Announced 2020, February 25 2021, November 26
Status Available. Released 2020, March 05 Available. Released 2022, January 21
Main Camera
Dual - 48 MP, f/1.8, (wide), AF 2 MP, f/2.4, (depth)
Features LED flash, panorama, HDR LED flash
Triple 64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF 8 MP, f/2.2, 123˚ (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.4, (macro) 5 MP, f/2.2, (depth) -
Video 4K@30fps, 1080p@30fps, gyro-EIS 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM 32GB 2GB RAM, 32GB 3GB RAM, 32GB 4GB RAM, 64GB 4GB RAM, 64GB 3GB RAM, 128GB 4GB RAM
  UFS 2.1 eMMC 5.1
Misc
Colors Ocean Blue, Space Black, Red Black, Blue, Red
Models SM-M315F, SM-M315F/DS, SM-M315F/DSN SM-A035F, SM-A035F/DS, SM-A035M, SM-A035G
SAR 0.52 W/kg (head)     0.69 W/kg (body)     -
SAR EU 0.48 W/kg (head)     1.13 W/kg (body)     0.20 W/kg (head)     1.35 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, 13, 17, 20, 26, 28, 38, 40, 41, 66 1, 3, 5, 7, 8, 20, 28, 38, 40, 41
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Platform
Chipset Exynos 9611 (10 nm) Unisoc T606 (12 nm)
CPU Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) Octa-core (2x1.6 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
GPU Mali-G72 MP3 Mali-G57 MP1
OS Android 10, upgradable to Android 12, One UI 4.1 Android 11, upgradable to Android 13, One UI core 5
Selfie camera
Features HDR -
Single 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm 5 MP, f/2.2
Video 4K@30fps, 1080p@30fps Yes
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes