Product
Samsung Galaxy A31
Samsung Galaxy A31
Samsung Galaxy M13 (India)
Samsung Galaxy M13 (India)
Battery
Charging 15W wired 15W wired
Type Li-Po 5000 mAh Li-Po 6000 mAh
Body
Build - Glass front (Gorilla Glass 5), plastic back, plastic frame
Dimensions 159.3 x 73.1 x 8.6 mm (6.27 x 2.88 x 0.34 in) 165.4 x 76.9 x 9.3 mm (6.51 x 3.03 x 0.37 in)
SIM Nano-SIMNano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 185 g (6.53 oz) 207 g (7.30 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
NFC Yes (market/region dependent) No
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, BDS, GALILEO, QZSS
Radio FM radio, RDS, recording No
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 5
Resolution 1080 x 2400 pixels, 20:9 ratio (~411 ppi density) 1080 x 2408 pixels, 20:9 ratio (~400 ppi density)
Size 6.4 inches, 98.9 cm2 (~84.9% screen-to-body ratio) 6.6 inches, 104.9 cm2 (~82.5% screen-to-body ratio)
Type Super AMOLED PLS LCD
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, compass Fingerprint (side-mounted), accelerometer, compass
  Virtual proximity sensing Virtual proximity sensing
Launch
Announced 2020, March 24 2022, July 14
Status Available. Released 2020, April 27 Available. Released 2022, July 23
Main Camera
Features LED flash, panorama, HDR LED flash, panorama, HDR
Quad 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 123˚, (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.4, (macro) 5 MP, f/2.4, (depth) -
Triple - 50 MP, f/1.8, (wide), PDAF 5 MP, f/2.2, 123˚ (ultrawide) 2 MP, f/2.4, (depth)
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM 64GB 4GB RAM, 128GB 6GB RAM
  eMMC 5.1 eMMC 5.1
Misc
Colors Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White Midnight Blue, Aqua Green, Stardust Brown
Models SM-A315F, SM-A315F/DS, SM-A315G/DS, SM-A315G, SM-A315N SM-M135FU, SM-M135FU/DS
SAR - 0.56 W/kg (head)    
SAR EU 0.49 W/kg (head)     1.68 W/kg (body)     -
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 - SM-A315F HSDPA 850 / 900 / 2100
4G bands 1, 2, 3, 5, 7, 8, 20, 38, 40, 41 - SM-A315F 1, 3, 5, 7, 8, 20, 28, 38, 40, 41
Speed HSPA, LTE HSPA, LTE
Technology GSM / HSPA / LTE GSM / HSPA / LTE
  1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 28, 38, 40, 41, 66 - SM-A315G -
Our Tests
Battery (old) Endurance rating 124h -
Camera Photo / Video -
Display 635 nits max brightness (measured) -
Loudspeaker -30.9 LUFS (Below average) -
Performance AnTuTu: 151815 (v8) GeekBench: 5096 (v4.4), 1216 (v5.1) GFXBench: 7fps (ES 3.1 onscreen) -
Platform
Chipset Mediatek MT6768 Helio P65 (12 nm) Exynos 850 (8 nm)
CPU Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55) Octa-core (4x2.0 GHz Cortex-A55 & 4x2.0 GHz Cortex-A55)
GPU Mali-G52 MC2 Mali-G52
OS Android 10, upgradable to Android 12, One UI 4.1 Android 12, One UI Core 4
Selfie camera
Features - HDR
Single 20 MP, f/2.2, (wide) 8 MP, f/2.2, (wide)
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes