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Samsung Galaxy A51


Xiaomi Mi 9


Samsung Galaxy A51
Xiaomi Mi 9

Released in December 2019. Features 6.5 inches screen with a resolution of 1,080 x 2,400 pixels and 405 ppi.

Octa-core processor Samsung Exynos 9611 with up to 8 GB memory and 256 GB storage. It has 4,000 mAh battery.

Released in March 2019. Features 6.39 inches screen with a resolution of 1,080 x 2,340 pixels and 403 ppi.

Octa-core processor Qualcomm Snapdragon 855 SM8150 with up to 8 GB memory and 256 GB storage. It has 3,300 mAh battery.

Head to Head
  • Probably more versatile rear camera
  • Much better battery capacity (18%)
  • Probably better rear camera
  • Probably better front camera
  • More processing power (12%)
  • Battery with better fast charging (44%)


Specifications

Samsung Galaxy A51 Xiaomi Mi 9
Specifications
Brand Samsung Xiaomi
Model - -
Release Date December 2019 March 2019
Operating System One UI (Android 10) MIUI (Android 9.0)
Dimensions
Size 158.5 x 73.6 x 7.9 mm
6.24 x 2.90 x 0.31 in
157.5 x 74.7 x 7.6 mm
6.20 x 2.94 x 0.30 in
Weight 172 g
6.07 oz
173 g
6.10 oz
Screen
Size 6.5 inches 6.39 inches
Resolution 1,080 x 2,400 pixels 1,080 x 2,340 pixels
PPI 405 403
Features OLED OLED
Cameras
Rear Quad camera
48 MP f/2.0 Wide
12 MP f/2.2 Ultra Wide
5 MP f/2.4 Macro
5 MP f/2.2 Depth
Triple camera
48 MP f/1.8 Wide
16 MP f/2.2 Ultra Wide
12 MP f/2.2 Telephoto
Front 32 MP f/2.2 Wide 20 MP f/2.0 Wide
Storage
Memory 4 GB
6 GB
8 GB
6 GB
8 GB
Fixed 64 GB
128 GB
256 GB
64 GB
128 GB
256 GB
Removable microSDXC -
Processor
Chip Samsung Exynos 9611
Octa-core processor
10 nm
Qualcomm Snapdragon 855 SM8150
Octa-core processor
7 nm
CPU 4x 2.30 GHz Cortex-A73
4x 1.70 GHz Cortex-A53
1x 2.84 GHz Kryo 485 Prime
3x 2.42 GHz Kryo 485 Gold
4x 1.78 GHz Kryo 485 Silver
GPU Mali-G72 MP3 Adreno 640
Battery
Capacity 4,000 mAh 3,300 mAh
Features Fast charging 15W Fast charging 27W
Removable False False
Connectivity
5G False False
NFC True True
3.5 mm Audio Jack True False
Micro USB False False
USB Type-C True True
Lightning False False

Size comparison

Samsung Galaxy A51 Xiaomi Mi 9

Samsung Galaxy A51

Xiaomi Mi 9

6.5"
172 g
6.07 oz

6.39"
173 g
6.10 oz