Samsung Galaxy A31 vs Samsung Galaxy J7 Duo 2018

Samsung Galaxy A31 vs Samsung Galaxy J7 Duo 2018: The Samsung Galaxy A31 and Samsung Galaxy J7 Duo 2018 are two popular smartphones from Samsung. In this article, we will compare their features, performance, and specifications to help you make an informed decision. Let’s dive in and see how these two devices stack up against each other.

Feature Samsung Galaxy A31 Samsung Galaxy J7 Duo 2018
Display Size 6.4 inches 5.5 inches
Display Type Super AMOLED Super AMOLED
Resolution 1080 x 2400 pixels 720 x 1280 pixels
Processor Octa-core (2×2.0 GHz Cortex-A75 & 6×1.7 GHz Cortex-A55) Octa-core (2×2.2 GHz Cortex-A73 & 6×1.6 GHz Cortex-A53)
RAM 4 GB 4 GB
Internal Storage 64 GB / 128 GB 32 GB
Expandable Storage Yes (up to 512 GB) Yes (up to 256 GB)
Main Camera 48 MP (f/2.0) + 8 MP (f/2.2) + 5 MP (f/2.4) + 5 MP (f/2.4) 13 MP (f/1.9) + 5 MP (f/1.9)
Front Camera 20 MP (f/2.2) 8 MP (f/1.9)
Video Recording 1080p@30fps 1080p@30fps
Battery Capacity 5000 mAh 3000 mAh
Operating System Android 10, One UI 2.0 Android 8.0 (Oreo)
Dimensions 159.3 x 73.1 x 8.6 mm 153.5 x 77.2 x 8.2 mm
Weight 185 g 174 g
Biometric Authentication Fingerprint (under display, optical) Fingerprint (front-mounted)
Colors Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White Black, Gold
SIM Card Dual SIM (Nano-SIM, dual stand-by) Dual SIM (Nano-SIM, dual stand-by)
Headphone Jack Yes Yes
USB USB Type-C Micro USB
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