Galaxy A51 vs Moto G9 Plus: Which Should You Buy?

Galaxy A51 and Moto G9 Plus are Samsung and Motorola midrange phones. The common features of the datasheet are the quad-camera and 128 GB storage. However, they are set apart by battery and processor capacity. Check below for a comparison between the phones.

Galaxy A51 vs Moto G9 Plus

SpecificationMoto G9 Plus
LaunchSeptember 2020
Current price$299
Screen6.8 inches
Screen resolutionFull HD + (2400 x 1080 pixels)
ProcessorSnapdragon 730G (octa-core up to 2.2 GHz)
Storage128 GB
Memory cardMicroSD up to 512 GB
Main cameraQuadruple Camera: 64 MP, 8 MP, 2 MP, and 2 MP
Front camera (selfie)16 MP
Operating systemAndroid 10
Battery5,000 mAh
Dimensions and weight169.98 x 78.1 x 9.89 mm; 223 grams
ColorsIndigo blue and Rose gold
Source: Samsung and Motorola (official websites)

Screen and Design

Motorola G9 Plus

The Moto G9 Plus has a 6.8 inch IPS LCD screen, Full HD+ resolution (2400 x 1080 pixels), and a density of 386 PPI. The Galaxy A51 screen is smaller, with 6.5 inches, but the display technology is Super AMOLED, which should offer more fluidity in movies and games. The resolution is also Full HD+ (2400 x 1080 pixels), but the density is superior, of 405 PPI. Also, Samsung’s mobile phone has Gorilla Glass 3 protection against falls and scratches.

As for the design, the models are similar in some aspects. Both present notch absence and front camera sheltered in a hole in the screen. The devices still have a thin and elongated body, which can facilitate handling. The Biometrics of the Moto G9 Plus is on the side, while the fingerprint reader of the Galaxy A51 is integrated into the screen itself.

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Galaxy A51 Camera

When the subject is rear camera, both smartphones have a quad camera, but the Moto G9 Plus main sensor brings more megapixels, with 64 MP and f/1.8 aperture. The camera of the device still consists of an ultra-wide camera of 8 MP (f/2.2 aperture), a macro camera of 2 MP (f/2.2 aperture), and a depth sensor of 2 MP (f/2.2 aperture). The ultra-wide with 118º angle promises to capture a larger portion of the landscape or people.

The main sensor of the Galaxy A51 is 48 MP and f/2.0 aperture. The other cameras are an ultra-wide 48 MP (f/2.2 aperture), a 5 MP macro lens (f/2.4 aperture), and a 3D sensor with 5 MP (f/2.2 aperture). The front camera of the device is 32 MP (f/2.2 aperture), superior to the 16 MP selfies sensor of the Moto G9 Plus.

As for the video, the two phones record in 4K (2160p) at a speed of 30 fps (frames per second). The front camera of the Moto G9 Plus still has Full HD and 30 fps recording and the Galaxy A51 records in 4K. The two also have an HDR system, which assists the records with more evident contrast.

Performance and Storage

Galaxy A51

In terms of processor, the Galaxy A51 should have a small advantage. The device features the Exynos 9611 processor (octa-core up to 2.3 GHz). The Moto G9 Plus processor is Qualcomm’s 730G Snapdragon, an octa-core chip up to 2.2 GHz focused on the gamer audience. The RAM of both is 4 GB, which should meet the demand for basic applications such as social networking, music, and email.

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Both have the same storage since they have 128 GB of memory and allow expansion by microSD card of up to 512 GB.



The Motorola cell phone features a more powerful battery, with a 5,000 mAh component. The Galaxy A51 comes with 4,000 mAh, which is enough, according to Samsung, to hold up to 15 hours of continuous use on 4G, 16 hours of Wi-Fi, and 20 hours of video playback.

The South Korean device is compatible with a 15 W fast recharging, while the Moto G9 Plus is powered by the 30 W TurboPower charger.

Android Version and Additional Features

Android 10

Both devices come out of the factory with Android 10. The Galaxy A51 comes with Samsung’s own One UI 2.0 interface, while the Moto G9 Plus comes with the software closest to a “pure” Android.

Both have Bluetooth 5.0, GPS, digital reader, and NFC to make proximity payments. Regarding connectivity, the smartphones have Wi-Fi in the 802.11 a/b/g/n/ac tracks, plus proximity sensor and USB-C 2.0 ports.


The Galaxy A51 was announced in January 2020, and it can already be found for values from $272 in electronic commerce.

The Moto G9 Plus was announced in September in the colors indigo blue and rose gold, and can already be seen for figures around $299 on eCommerce.

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