Display
Samsung Galaxy M31:6.4-inch full-HD+ Infinity-U Display Samsung Galaxy M30s: 6.4-inch Super AMOLED Infinity-U Display Samsung Galaxy A51: 6.5-inch Super AMOLED full-HD+Infinity-O Display
Processor
Samsung Galaxy M31: Exynos 9611 processor Samsung Galaxy M30s: Exynos 9611 processor Samsung Galaxy A51: Exynos 9611 processor
Rear camera(s)
Samsung Galaxy M31: 64MP + 8MP + 5MP + 5MP Samsung Galaxy M30s: 48MP + 5MP + 3MP Samsung Galaxy A51:48MP+12MP+5MP+5MP
Selfie camera
Samsung Galaxy M31: 32MP Samsung Galaxy M30s: 16MP Samsung Galaxy A51:32MP
RAM and storage
Samsung Galaxy M31: 6GB RAM + 64GB storage and 6GB RAM + 128GB storage Samsung Galaxy M30s: 4GB RAM + 64GB storage and 6GB RAM + 128GB storage Samsung Galaxy A51: 6GB RAM + 128GB storage and 8GB RAM + 128GB storage
Battery
Samsung Galaxy M31: 6000mAh battery Samsung Galaxy M30s: 6000mAh battery Samsung Galaxy A51:4,500mAh battery
Operating system
Samsung Galaxy M31: One UI 2.0 based on top of Android 10 Samsung Galaxy M30s: Samsung One UI, based on Android 9.0 Pie Samsung Galaxy A51: Android 10 with One UI 2.0 on top
Price
Samsung Galaxy M31: Rs 14,999 Samsung Galaxy M30s: Rs 13,999 Samsung Galaxy A51: Rs 23,999
Our Take
All the phones come with the same processor that is Exynos 9611. Both Galaxy M31 and A51 offer quad cameras but the newly launched Galaxy M31 comes with a better set up with a 64-megapixel primary sensor whereas its predecessor comes with a triple rear camera. Both M31 and A51 equips a 32megapixel selfie camera whereas M30s has a 16-megapixel selfie camera. Other than that Galaxy M31 and M30s delivers a longer battery life as they pack a 6000mAh battery. In the pricing department, the Samsung M series is an affordable option. To conclude In terms of specifications and pricing the newly launched Samsung Galaxy M31 is a better option for you. For the latest gadget and tech news, and gadget reviews, follow us on Twitter, Facebook and Instagram. For newest tech & gadget videos subscribe to our YouTube Channel. You can also stay up to date using the Gadget Bridge Android App.