Oppo A78 5G review

Read our full review to find out how the Oppo A78 5G differs, what our opinion of it is and whether it's worth the money.
Added by on 01.11.23 | Last update 05.09.23
Oppo A78 5G ревю
Rate this smartphone
3.48 / 5


Oppo recently launched its latest 5G smartphone, the A78 5G, in the Indian market. Priced at Rs 18,999, this smartphone competes directly with other devices in the same price range, such as the Redmi Note 12 5G.

Before reading the full review, you can familiarize yourself with the detailed Oppo A78 5G specs or watch the video below the article.


  • Release date: January, 2023
  • Colors: Black, Purple
  • Dimensions: 75.1 x 163.8 x 8.0 mm.
  • Weight: 188 g.
  • Screen: 6.56" inc, 720 x 1612, 188 g
  • Camera : Dual, 50MP
  • Chipset: MediaTek Dimensity 700 (MT6833) (7 nm)
  • CPU: Octa-Core (4x Cortex A76 2.2 GHz + 4x Cortex A55 2.0 GHz)
  • Memory: 8GB 128GB, 8GB · 128GB
  • Battery: 5000, Li-Polymer, non-removable
  • Network: 2G / 3G / 4G / 5G
  • Operating system: Android 13
  • Sensors: Fingerprint (side-mounted), Proximity, Accelerometer, compass, Pedometer

Design and build quality of Oppo A78

Whenever you buy a smartphone, the design is the first thing you see. The Oppo A78 has a sleek and modern design that looks impressive. 

Starting with the back panel, the smartphone has the Oppo branding at the bottom and there is no dedicated island for the camera. Instead, there is a rectangular camera module at the top left corner for the placement of the sensors. 

The module consists of three camera sensors and an LED flash. The design is simple but elegant.

Moving on to the front, the Oppo A78 features a cut out hole at the top center of the display to accommodate the front camera. 

The display has thin bezels and a thin chin. The power button, along with the fingerprint scanner, is available on the right side. On the left side are the volume buttons. At the bottom of the device, there's a speaker grill, a 3.5mm headphone jack, and a USB Type-C port.

Build Quality:

The Oppo A78 is well made and feels solid in the hand. It is 8.4 mm thick and weighs around 196 grams. The smartphone has a metal frame with a glass back panel. 

The back panel has a gradient finish that looks attractive and premium. The device is available in two colour options - black and blue.

One of the interesting features of the Oppo A78 is that it has a liquid cooling system. This system can keep the phone cool during long gaming sessions, which is a plus for gamers.

Overall, the design and build quality of the Oppo A78 are impressive. It's a sleek and modern smartphone that looks and feels premium.


The Oppo A78 5G is equipped with a 6.56-inch LCD display with a refresh rate of 90 Hz, but unfortunately it only supports resolutions up to HD+, which is not the best in this price segment. This means you might be missing out on the sharpness of an FHD+ screen. 

While the display is good for streaming content, it doesn't impress with its brightness, and when used in direct sunlight, content is barely visible.

Despite the display's limitations, the phone's dual stereo speakers make up for this as they offer high-quality audio output. Whether you're listening to songs on Spotify or streaming YouTube videos, the speakers sync up and deliver decent results.

The display response speed is decent, and the 90 Hz refresh rate makes it more than adequate for a smartphone in this price range. You can watch almost anything on this device including music videos, educational videos, movies or TV series. 

However, the colors are not as good as the ones you get on a semi-premium or premium smartphone.

The A78 5G has a pretty basic display design with the camera sensor on a teardrop notch at the top. 

The display offers color modes like "Vivid" and "Natural" that allow for some customization.
The display is bright and may not make you feel that it is an HD+ resolution screen. However, the display content is not always clearly visible in very bright sunlight. 

While the display isn't really bad, Oppo could have offered Full HD+ resolution on the device, especially considering that some brands offer AMOLED displays up to 120Hz at a price similar to the A78.

On the other hand, HD+ resolution will allow the phone to consume less power and last longer. 


The Oppo A78 5G comes with a dual camera setup on the back, featuring a 50MP primary sensor and a 2MP depth sensor. For selfies, there's an 8MP sensor in the front. 

Camera modes and features
The camera modes available on the Oppo A78 5G include Photo, Video, Portrait, Night, Pro, Extra HD, Panorama, Slow Motion, Timelapse, Sticker, and Text Scanner. 

There is also AI enhancement support for getting better photos. Users can enable AI or disable it from the title menu in the camera app. The camera also provides other options like HDR, 50MP and Google Lens.

Daylight shooting

The Oppo A78's 50MP main camera performs well in daylight conditions. The photos taken are quite detailed and are quick to focus. 

Moreover, the exposure is synchronized and the dynamic range is decent. The highlights of the subjects should be better, and the color profile of the final photo is a bit dull.

Portrait photography

In portrait mode, the background blur was a little more aggressive than expected. There is no ultra-wide camera in the device. The main flash is coupled with a 2-megapixel macro camera that captures images of mediocre quality.

Low light photos

Photos taken in low light don't perform well, and the detail levels look poor. 

Oppo has included a dedicated night mode in this smartphone and it will allow you to get improved images when shooting in low light conditions. The night mode manages to improve images shot in low light conditions.

Selfie photography

The Oppo A78 5G's 8MP selfie sensor offers high-quality selfie shots in a variety of lighting conditions. 

However, the main problem of the front camera is that there is a delay in capturing. This lag can be quite visible at times and can also annoy you when snapping a group photo.

Video recording

The front and rear cameras can capture up to Full HD video at 30 frames per second. However, EIS stabilization is not available on board.

Oppo A78 5G performance

As far as performance is concerned, it is decent on the Oppo A78 5G, but there is still room for improvement. The phone is powered by a MediaTek Dimensity 700 SoC chipset made on a 7nm process. 

The chipset is octa-core, with two Arm Cortex-A76 cores clocked up to 2.2 GHz and six Arm Cortex-A55 cores clocked up to 2 GHz. It also features up to 8GB of LPDDR4X RAM and 128GB of UFS 2.1 storage.

The Oppo A78 5G handles typical processing requirements satisfactorily. The processor can easily handle tasks like browsing social networking apps or YouTube. 

However, it struggles with graphics-intensive games and the device will overheat if you play for a long time with high settings. 

Operating system

The Oppo A78 5G comes with ColorOS 13, based on the Android 13 operating system. Compared to other Chinese OEM skins, ColorOS 13 on the A78 is more advanced. However, it has a lot of unsolicited software in it, which is a common problem.

Battery life

The Oppo A78 5G's battery life is decent, but it can drain pretty quickly if you use it intensively. Being a 5G smartphone, battery drain is faster when you are connected to a 5G network. 

To save battery, it's best to stay on a 4G network. The phone has a 5000 mAh battery with 33W fast charging support. It takes about an hour and a half to fully charge the smartphone.

Fingerprint scanner

Oppo A78 5G has a fast fingerprint scanner located on the power button. This feature is a plus for those who prefer quick and secure access to their phones.

Connectivity and competition

The Oppo A78 5G delivers optimal connectivity performance, including LTE, Wi-Fi, and Bluetooth. As for the competition, the Realme 10 Pro 5G and Redmi Note 12 5G have better processors than the Oppo A78 5G, the Snapdragon 695 SoC and Snapdragon 4 Gen 1, respectively.

Oppo A78 5G price and availability

The Oppo A78 5G is a decent smartphone that performs well in every domain, making it a suitable choice for those looking for a smartphone under Rs 20,000 in India. 
It is a 5G device which ensures that you can use it whenever 5G becomes available in your area. 

The device is available in blue and black colour options.
However, in this price range, there are several other options from competing brands that offer slightly better camera features


Overall, the Oppo A78 5G is a decent mid-range smartphone with some impressive specs, but there are some flaws as well. The phone's weak display and camera specs may not appeal to everyone, but the dual stereo speakers and 5G connectivity make it a good option for those who prioritize sound quality and internet speed. Stable build quality and reliable software and performance make it a great device for everyday use.


- Dual stereo speakers offer great sound quality.
- The main camera is an impressive 50 MP, offering high-quality daytime shots.
- The phone runs ColorOS 13, which is a user-friendly operating system.
- The Oppo A78 5G offers 5G connectivity which guarantees faster internet speeds.


- The display is weak and doesn't offer a high refresh rate
- The device struggles with optimization, which can lead to lag and slowdowns.
- Camera performance is unsatisfactory and does not meet the high standards set by other devices in its price range.
- The sound quality from the speakers is below average and may disappoint some users.

Additional Pros:

- The design of the phone is sleek and modern.
- The build quality of the device is sturdy and durable.
- The phone's software and performance are smooth and reliable.
- Battery life is impressive and can last all day with moderate use.
- Fast charging speeds ensure the phone can be charged quickly when needed.

Oppo A78 5G video review

Disclaimer: The information presented in this article is based on our team's personal experience with the Oppo A78 5G and third-party sources. While every effort has been made to provide accurate and reliable information, readers should keep in mind that this is a subjective assessment. The writing of this article was not paid for or sponsored by Oppo.

Richard Taylor

Richard Taylor

Richard Taylor is a technology expert and journalist based in the UK. With a degree in Computer Science from the University of Birmingham, he provides insightful analysis and expert reviews of the latest smartphones and technology. His technical expertise, passion for technology, and years of experience make him a trusted source in the industry.

Compare Share on Share on Error report

Related models:

Samsung Galaxy A54 5G Samsung Galaxy A54 5G
Oppo A98 Oppo A98
Oppo A74 5G Oppo A74 5G
Xiaomi Redmi 10 5G Xiaomi Redmi 10 5G
Oppo Reno 8T 5G Oppo Reno 8T 5G
Samsung Galaxy A53 5G Samsung Galaxy A53 5G
Oppo A96 Oppo A96
Motorola Moto G53 Motorola Moto G53
Oppo Reno8 Lite Oppo Reno8 Lite
Xiaomi Redmi Note 11 Pro 5G Xiaomi Redmi Note 11 Pro 5G
Samsung Galaxy A71 Samsung Galaxy A71
Samsung Galaxy A14 5G Samsung Galaxy A14 5G