Galaxy A51 5G vs Oppo Reno4 Z 5G
Shop Samsung Galaxy
Galaxy A51 5G
Starting at
£111.90£399.00 new
Oppo Reno4 Z 5G
Starting at
£105.00What's the difference between the Galaxy A51 5G and Oppo Reno4 Z 5G?
Galaxy A51 5G vs Oppo Reno4 Z 5G comes down to the chipset, RAM and battery. Refurbished, the Oppo Reno4 Z 5G starts at £105, £6.90 less than the Galaxy A51 5G.
Refurbished from
Chipset
RAM
Battery
Screen size
Screen type
- Chipset: Exynos 980 on the Galaxy A51 5G, Mediatek Dimensity 800 on the Oppo Reno4 Z 5G.
- The Oppo Reno4 Z 5G has more RAM: 8 GB vs 6 GB.
- The Galaxy A51 5G has a bigger battery: 4500 mAh vs 4000 mAh.
Galaxy A51 5G vs Oppo Reno4 Z 5G specs
The Galaxy A51 5G and Oppo Reno4 Z 5G both offer 5G connectivity and a similar screen resolution with 128GB storage. The Galaxy A51 5G suits users who value a larger battery, Super AMOLED display, and higher resolution front camera for detailed selfies. The Oppo Reno4 Z 5G fits those who prefer smoother visuals with its 120 Hz refresh rate, more RAM for multitasking, and a lighter device. Each phone suits different priorities depending on your usage, whether that is screen quality, memory, or battery size.
Galaxy A51 5G vs Oppo Reno4 Z 5G price
Colour
- WhiteSold out
Storage
- 128GBSold out
Galaxy A51 5G vs Oppo Reno4 Z 5G battery life and software updates
Durability covers battery size and software support, which influence how long the devices last on a charge and stay current with updates.
Battery Capacity
The Galaxy A51 5G has a 4500 mAh battery, which provides more power capacity for longer use between charges. The Oppo Reno4 Z 5G offers a 4000 mAh battery, which still supports a full day of typical use but might need charging sooner under heavy use.
Battery
Foldable
Software updates
Year of release
Galaxy A51 5G vs Oppo Reno4 Z 5G performance
Performance depends on the chipset, RAM, and storage, which affect speed, multitasking, and how much data you can keep on the device.
Processor Type
The Galaxy A51 5G uses the Exynos 980 chipset, while the Oppo Reno4 Z 5G has the Mediatek Dimensity 800. Both chipsets provide solid everyday performance, suitable for browsing, social media, and media playback.
Memory
Oppo Reno4 Z 5G comes with 8 GB of RAM, which keeps more apps open and running smoothly during multitasking. The Galaxy A51 5G has 6 GB of RAM, which handles everyday apps well but with slightly less capacity for heavy multitasking.
Storage
Both devices offer 128GB of storage, providing ample space for apps, photos, and videos.
Chipset
RAM
Galaxy A51 5G vs Oppo Reno4 Z 5G screen
Screen quality affects how you see content daily, from sharpness and colour to motion smoothness and screen size.
Refresh Rate
The Oppo Reno4 Z 5G has a 120 Hz refresh rate, which makes scrolling and animations look smoother and more fluid. The Galaxy A51 5G has a standard 60 Hz refresh rate, which is fine for most tasks but less smooth in fast motion.
Screen Type and Size
Galaxy A51 5G uses a Super AMOLED screen, known for vibrant colours and deep blacks, and its 6.5 inch size offers a roomy display for video and browsing. Oppo Reno4 Z 5G has a 6.57 inch IPS LCD screen, which delivers consistent colours and good brightness but with less contrast than AMOLED.
Resolution
Both phones have a 1080 x 2400 resolution, so sharpness and detail are comparable.
Refresh rate
Resolution
Screen size
Screen type
Galaxy A51 5G vs Oppo Reno4 Z 5G camera
Camera quality shapes how your photos and videos turn out, especially selfies and main shots.
Front Camera
The Galaxy A51 5G features a 32 megapixel front camera for detailed selfies and video calls. The Oppo Reno4 Z 5G has a 16 megapixel front camera, which still takes clear selfies but with less detail.
Main Camera
Both devices have a 48 megapixel main camera, so they offer similar detail levels for regular photos and videos.
Front camera
Main camera
Galaxy A51 5G vs Oppo Reno4 Z 5G size and design
Other details include network and physical features that affect daily use and expandability.
Expandable Storage
The Galaxy A51 5G supports microSDXC cards, allowing you to increase storage beyond the built-in 128GB. The Oppo Reno4 Z 5G does not have this feature.
SIM and Network
Both phones are unlocked and support Dual Physical SIM cards and 5G networks, giving you flexibility in carriers and fast mobile internet.
Size and Weight
Galaxy A51 5G measures 8.7 mm in depth, 158.9 mm in height, 73.6 mm in width, and weighs 187 g. Oppo Reno4 Z 5G is slightly thicker at 8.1 mm depth, taller at 16.38 cm height, wider at 7.55 cm, and weighs 184 g. These differences may affect how each phone feels in your hand or pocket.
Carrier compatibility
Connector
Depth
Height
Mobile network
SD card slot
SIM card
Weight
Width
Galaxy A51 5G or Oppo Reno4 Z 5G: which should you buy?
Buy the Galaxy A51 5G if
- you want a bigger battery (4500 mAh vs 4000 mAh)
- you want an OLED screen
- you want a higher-resolution front camera (32 megapixels vs 16 megapixels)
Buy the Oppo Reno4 Z 5G if
- you want to spend less: it starts at £105, £6.90 less than the Galaxy A51 5G
- you want more RAM (8 GB vs 6 GB)
- you want a smoother screen (120 Hz vs 60 Hz)
Galaxy A51 5G vs Oppo Reno4 Z 5G FAQs
Galaxy A51 5G vs Oppo Reno4 Z 5G comes down to the chipset, RAM and battery. Chipset: Exynos 980 on the Galaxy A51 5G, Mediatek Dimensity 800 on the Oppo Reno4 Z 5G. The Oppo Reno4 Z 5G has more RAM: 8 GB vs 6 GB.
The Oppo Reno4 Z 5G is cheaper refurbished, from £105 compared with £111.90 for the Galaxy A51 5G.
The Galaxy A51 5G has a bigger battery: 4500 mAh vs 4000 mAh.
Both have the same main camera: 48 megapixels.
Updates for the Galaxy A51 5G ended in Jun 2024. We don't have published update dates for the Oppo Reno4 Z 5G.
Both come in 128GB refurbished.
