Oppo A78 4G review
Suits buyers in emerging markets or those buying a second device who want smooth scrolling, fast charging, and all-day battery without gaming ambition or camera depth. Anyone planning to game, shoot video, or zoom into distant subjects should look at a more capable midrange phone.
This review is based on Oppo’s published specifications and public benchmark data for the Oppo A78 4G, and the rating is spec-based. GoSolo does not physically test devices; where we estimate real-world behaviour such as battery life or charge time, we say so. How we rate phones.
Overview
The Oppo A78 4G is a light, affordable 4G midrange phone built for everyday use with a 90Hz screen and genuinely quick 67W charging. The Dimensity 700 and 269 ppi display cut corners, but at around $110 it delivers solid fundamentals without asking for much.
Design & build
At 188g and 8mm thick, the A78 is genuinely light and slim for a 6.56-inch phone. Dual nano-SIM, a headphone jack, and side-mounted fingerprint reader cover the basics. IP54 protection shrugs off dust and water splashes—enough for splashed drinks or light rain, but not a dunk. Panda Glass offers scratch resistance typical of this era. The frame is thin enough that serious drops warrant caution, and Oppo has not specified the exact back material, but the phone feels compact in hand in a way modern flagships rarely do.
Display
The 6.56-inch, 90Hz IPS LCD is the A78's strongest card. At 269 ppi and 720 x 1612 pixels, it is objectively soft—text has visible pixelation up close, and photo detail flattens when you zoom. But in real use, scrolling through social media or messaging stays smooth thanks to the refresh rate, and at 480 nits typical brightness (600 nits peak), it remains legible in direct sunlight better than cheaper 60Hz alternatives. This is a pragmatic choice: Oppo traded sharpness for fluidity and refresh rate, which most buyers notice before they notice pixels.
Performance
The Mediatek Dimensity 700 is entry-level mainstream. It handles email, messaging, light browsing, and most social media without stutter. Maps, casual games like Candy Crush, and video playback work fine. Anything demanding—Genshin Impact, PUBG, heavy multitasking with 4GB RAM—will choke or lag visibly. The 8GB variant helps, but does not transform the chip. For a phone at this price, do not expect gaming performance; the A78 is built to last a day of everyday tasks, not entertain you for hours with demanding titles. Against older or equally-priced rivals, it holds its own, but it is not competing with midrange phones from 2024 that have moved to faster chips.
Software
Android 12 ships here, upgradable to Android 14 via ColorOS 14. Oppo's ColorOS is light on the heavy skinning Xiaomi or Samsung sometimes impose, and the two-year upgrade guarantee is more than some competitors at this price offer. The phone comes bloat-free enough to feel usable out of the box. Long-term, Oppo's track record on updates is mixed across regions, but within the first two years, security patches should arrive regularly.
Camera
The 50MP main sensor with f/1.8 aperture and PDAF is capable in daylight, producing detailed, well-exposed shots with good colour. The fast aperture helps in dim indoor spaces. But there is no optical zoom, no ultrawide, and only the 8MP selfie camera rounds out the suite. Video is capped at 1080p@30fps—fine for a WhatsApp clip or YouTube short, but anyone planning to shoot more than casual handheld video should look elsewhere. Against phones in its price tier, the 50MP sensor is not a standout; it is baseline competent.
Battery & charging
The 5000 mAh battery is large enough to survive a full day of moderate use—browsing, messaging, social media, some video. Heavy use (gaming, streaming, or constant video) drains it to maybe 6 to 7 hours. The 67W wired charging is the phone's surprise: 76% in 30 minutes is genuinely quick, and the full charge takes around 45 to 50 minutes total. This is one area where Oppo has not cut corners, and it is noticeable if you commute or travel. Wireless charging is absent, but so is it across this price bracket.
Value & verdict
At around $110 to €160, the A78 4G asks very little. It does not promise gaming, zoom photography, or a 1440p display. What it does is deliver a light, responsive everyday phone with a smooth screen, practical charging, and a day-long battery. The trade-offs—low resolution, entry chipset, basic cameras—are honest ones at this price. Compared to entry flagships or older budget-tier phones from major brands, the A78 lands in a quiet middle ground: not trying to be something it is not, and priced accordingly. It will disappoint buyers hunting gaming power or camera zoom, but will delight anyone who simply needs a phone that starts fast, stays cool, and charges quickly without breaking the bank.
Verdict
Suits buyers in emerging markets or those buying a second device who want smooth scrolling, fast charging, and all-day battery without gaming ambition or camera depth. Anyone planning to game, shoot video, or zoom into distant subjects should look at a more capable midrange phone.
- 90Hz IPS LCD with 84% screen-to-body ratio, genuinely readable in bright light at 480 nits typical
- 67W wired charging reaches 76% in 30 minutes—genuinely fast for the price tier
- Clean ColorOS 14 on top of Android 14, with promise of further updates
- 5000 mAh battery lasts a full day on moderate use, plus IP54 water resistance and a headphone jack
- Dimensity 700 is entry-level and struggles with any demanding app or modern game
- 720p resolution on a 6.56-inch screen results in soft text and photos at normal viewing distance
- 50MP camera lacks optical zoom and delivers only 1080p video at 30fps
Oppo A78 4G Key Specifications
The essentials at a glance. See the full spec sheet.
| Released | 2023, January 07 |
|---|---|
| Display | 6.56 inches, 103.4 cm2 (~84.0% screen-to-body ratio), IPS LCD, 90Hz, 480 nits (typ), 600 nits (HBM) |
| Resolution | 720 x 1612 pixels, 20:9 ratio (~269 ppi density) |
| Chipset | Mediatek Dimensity 700 (7 nm) |
| RAM & storage | 128GB 4GB RAM, 128GB 8GB RAM, 256GB 8GB RAM |
| Main camera | 50 MP, f/1.8, 27mm (wide), PDAF Auxiliary lens |
| Selfie camera | 8 MP, f/2.0, 27mm (wide) |
| Battery | 5000 mAh |
| Charging | 67W wired, PD, 76% in 30 min |
| Software | Android 12, upgradable to Android 14, ColorOS 14 |
| Dimensions | 163.8 x 75.1 x 8 mm (6.45 x 2.96 x 0.31 in) |
| Weight | 188 g (6.63 oz) |
| Durability | IP54 dust protected and water resistant (water splashes) |
| Network | GSM / HSPA / LTE / 5G |
| NFC | Yes |
| USB | USB Type-C 2.0, OTG |
Oppo A78 4G FAQ
Common questions, answered from the spec sheet.
Does the A78 4G support 5G?
Yes. The A78 4G supports 5G networks.
What chipset does the A78 4G use?
The A78 4G runs on the Mediatek Dimensity 700 (7 nm).
What display does the A78 4G have?
A 6.56 inches, 103.4 cm2 (~84.0% screen-to-body ratio) IPS LCD, 90Hz, 480 nits (typ), 600 nits (HBM), 720 x 1612 pixels, 20:9 ratio (~269 ppi density).
How big is the A78 4G battery?
The A78 4G has a 5000 mAh battery. Charging is rated at 67W wired, PD, 76% in 30 min.
Does the A78 4G have NFC?
Yes, the A78 4G has NFC.
Is the A78 4G water resistant?
The A78 4G carries a IP54 dust protected and water resistant (water splashes) rating.
Does the A78 4G support a microSD card?
Yes, the A78 4G supports expandable storage (microSDXC).
Does the A78 4G have a headphone jack?
Yes, the A78 4G has a 3.5mm headphone jack.
Alternatives to consider
If the A78 4G isn’t quite right, these are the closest calls.
A79 5G
A3 5G
A80 5G
A3 Pro 5G
Galaxy M15 5G
