Oppo Reno4 5G vs Xiaomi Redmi Note 9
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Oppo Reno4 5G
Starting at
£129.00
Xiaomi Redmi Note 9
Starting at
£119.00What's the difference between the Oppo Reno4 5G and Xiaomi Redmi Note 9?
Oppo Reno4 5G vs Xiaomi Redmi Note 9 comes down to the chipset, RAM and battery. Refurbished, the Xiaomi Redmi Note 9 starts at £119, £10 less than the Oppo Reno4 5G.
Refurbished from
Chipset
RAM
Battery
Screen size
Screen type
- Chipset: Qualcomm SM7250 Snapdragon 765G 5G (7 nm) on the Oppo Reno4 5G, Mediatek MT6769Z Helio G85 (12 nm) on the Xiaomi Redmi Note 9.
- The Oppo Reno4 5G has more RAM: 8 GB vs 3 GB.
- The Xiaomi Redmi Note 9 has a bigger battery: 5020 mAh vs 4000 mAh.
Oppo Reno4 5G vs Xiaomi Redmi Note 9 specs
The Oppo Reno4 5G and Xiaomi Redmi Note 9 both come from 2020 and run Android, but they differ in key areas that suit different users. The Reno4 5G offers faster mobile network support with 5G, more RAM at 8 GB, and a sharper AMOLED screen, which benefits you if you want smoother performance and richer visuals. The Redmi Note 9 has a larger battery and an SD card slot for expandable storage, along with a headphone jack, making it suitable if you prioritise longer battery life and flexible audio options. Camera setups vary with the Reno4 focusing on a higher resolution front camera and the Redmi Note 9 offering more rear cameras. Overall, the Reno4 5G suits those who want faster connectivity and memory, while the Redmi Note 9 fits those who want longer use per charge and storage expansion.
Oppo Reno4 5G vs Xiaomi Redmi Note 9 price
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Oppo Reno4 5G vs Xiaomi Redmi Note 9 battery life and software updates
Battery life and software updates are important for device longevity. Both phones share the same release year and Android OS, but their batteries differ in size, which affects how long they last between charges.
Battery Capacity
The Xiaomi Redmi Note 9 has a 5020 mAh battery, which offers more capacity for longer use between charges. The Oppo Reno4 5G has a 4000 mAh battery, which suits users comfortable with more frequent charging or who use power-saving settings.
Software Updates
This means both run on Android versions from their release period without official access to the newest system features.
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Fast charging
Foldable
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Year of release
Oppo Reno4 5G vs Xiaomi Redmi Note 9 performance
Performance depends on the processor, memory, and storage options. The Oppo Reno4 5G and Xiaomi Redmi Note 9 both offer storage sizes, but they differ notably in their chipsets and RAM, affecting speed and multitasking.
Processor Technology
The Oppo Reno4 5G uses a Qualcomm Snapdragon 765G 5G chipset built on a 7 nm process. This setup supports 5G connectivity and efficient performance. The Xiaomi Redmi Note 9 runs on a Mediatek Helio G85 chipset with a 12 nm process, providing solid performance for everyday tasks and 4G networks.
Memory Size
With 8 GB of RAM, the Oppo Reno4 5G keeps more apps open simultaneously and supports smoother multitasking. The Xiaomi Redmi Note 9 has 3 GB of RAM, which is suitable for everyday use and basic multitasking.
Storage Variants
The Oppo Reno4 5G comes with 128 GB of internal storage, offering ample space for apps, photos, and media. The Xiaomi Redmi Note 9 is available in both 64 GB and 128 GB options, giving you flexibility depending on how much storage you need.
Chipset
RAM
Oppo Reno4 5G vs Xiaomi Redmi Note 9 screen
Screen quality affects your viewing experience for videos, browsing, and gaming. Both phones have Full HD resolutions, but screen size and type vary, impacting display colour and size.
Screen Type
The Oppo Reno4 5G features an AMOLED screen, which generally delivers deeper blacks and more vibrant colours. This is suited to users who value richer display quality for media and gaming. The Xiaomi Redmi Note 9 uses an IPS LCD screen, providing good colour accuracy and brightness.
Screen Size
The Xiaomi Redmi Note 9 has a slightly larger 6.53 inch screen, offering more room for watching videos or browsing. The Oppo Reno4 5G has a 6.43 inch screen, which is a bit more compact and easier to handle with one hand.
Screen Resolution
Both devices have similar Full HD resolutions, with the Oppo Reno4 5G at 1080 x 2400 pixels and the Xiaomi Redmi Note 9 at 1080 x 2340 pixels. This means both deliver sharp images and text.
Resolution
Screen size
Screen type
Oppo Reno4 5G vs Xiaomi Redmi Note 9 camera
Camera and audio features shape your ability to capture photos and enjoy sound. The Oppo Reno4 5G and Xiaomi Redmi Note 9 differ in camera setups and front camera resolution, which affects selfies and video calls.
Main Camera Setup
The Xiaomi Redmi Note 9 has a quadruple rear camera system, giving you versatile shooting options. The Oppo Reno4 5G has a triple rear camera setup. Both have 48 megapixels on the main camera, capturing detailed photos.
Front Camera Resolution
The Oppo Reno4 5G features a 32 megapixel front camera, which suits you if you take lots of selfies or video calls and want higher resolution images. The Xiaomi Redmi Note 9 has a 13 megapixel front camera, suitable for everyday video and selfies.
Camera type
Front camera
Main camera
Oppo Reno4 5G vs Xiaomi Redmi Note 9 size and design
Other features like network compatibility, ports, and weight affect daily use and convenience. Each phone offers unlocked dual SIM support but differs in network technology, audio ports, and storage options.
Network and SIM
The Oppo Reno4 5G supports 5G networks, providing faster mobile data where available. The Xiaomi Redmi Note 9 works on 4G networks. Both phones have dual physical SIM slots and come unlocked, giving flexibility with carriers.
Audio Connectors
The Xiaomi Redmi Note 9 includes both a USB-C port and a 3.5mm headphone jack, which suits you if you prefer wired headphones without an adapter. The Oppo Reno4 5G has a USB-C connector only.
Expandable Storage
The Xiaomi Redmi Note 9 supports microSDXC cards, allowing you to add storage beyond the built-in capacity. The Oppo Reno4 5G provides only the internal storage.
Weight
The Oppo Reno4 5G weighs 183 g, making it lighter and potentially easier to carry for long periods. The Xiaomi Redmi Note 9 is slightly heavier at 199 g.
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Oppo Reno4 5G or Xiaomi Redmi Note 9: which should you buy?
Buy the Oppo Reno4 5G if
- you want more RAM (8 GB vs 3 GB)
- you want an OLED screen
- you want a higher-resolution front camera (32 megapixels vs 13 megapixels)
Buy the Xiaomi Redmi Note 9 if
- you want to spend less: it starts at £119, £10 less than the Oppo Reno4 5G
- you want a bigger battery (5020 mAh vs 4000 mAh)
- you want a headphone jack
Oppo Reno4 5G vs Xiaomi Redmi Note 9 FAQs
Oppo Reno4 5G vs Xiaomi Redmi Note 9 comes down to the chipset, RAM and battery. Chipset: Qualcomm SM7250 Snapdragon 765G 5G (7 nm) on the Oppo Reno4 5G, Mediatek MT6769Z Helio G85 (12 nm) on the Xiaomi Redmi Note 9. The Oppo Reno4 5G has more RAM: 8 GB vs 3 GB.
The Xiaomi Redmi Note 9 is cheaper refurbished, from £119 compared with £129 for the Oppo Reno4 5G.
The Xiaomi Redmi Note 9 has a bigger battery: 5020 mAh vs 4000 mAh.
Both have the same main camera: 48 megapixels.
Refurbished, the Oppo Reno4 5G comes in 128GB, and the Xiaomi Redmi Note 9 in 64GB and 128GB.









