Samsung Galaxy J7 Duo 2018 vs Samsung Galaxy M31

Samsung Galaxy J7 Duo 2018 vs Samsung Galaxy M31: Compare the Samsung Galaxy J7 Duo 2018 and the Samsung Galaxy M31 to find out which smartphone offers the best features and performance. Discover the key differences and similarities between these two popular Samsung models.

Feature	Samsung Galaxy J7 Duo 2018	Samsung Galaxy M31
Display Size	5.5 inches	6.4 inches
Display Type	Super AMOLED	Super AMOLED
Resolution	720 x 1280 pixels	1080 x 2340 pixels
Processor	Exynos 7 Octa 7884	Exynos 9611
RAM	4 GB	6 GB
Internal Storage	32/64 GB	64/128 GB
Expandable Storage	Yes (Up to 256 GB)	Yes (Up to 512 GB)
Main Camera	13 MP (f/1.9) + 5 MP (f/1.9)	64 MP (f/1.8) + 8 MP (f/2.2) + 5 MP (f/2.4) + 5 MP (f/2.4)
Front Camera	8 MP (f/1.9)	32 MP (f/2.0)
Battery Capacity	3000 mAh	6000 mAh
Operating System	Android 8.0 (Oreo)	Android 10.0 (One UI 2.0)
Fast Charging	No	Yes (15W)
USB Type	Micro USB	USB Type-C
Weight	174 grams	191 grams
Dimensions	153.5 x 77.2 x 8.2 mm	159.2 x 75.1 x 8.9 mm
Biometric Authentication	Fingerprint (front-mounted)	Fingerprint (rear-mounted)
Colors	Black, Gold	Black, Blue, Red
Sim Card	Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)