The sub-$200 smartphone market is fiercely competitive. The Umidigi G100, powered by a Unisoc T615, aims to deliver solid performance at an aggressive price point. However, the Oppo A78 4G, featuring Qualcomm’s Snapdragon 680, enters the fray with a focus on efficiency and notably faster charging. This comparison will dissect the key differences to determine which device offers the best value.
🏆 Quick Verdict
For the average user prioritizing fast charging and efficient performance, the Oppo A78 4G is the clear winner. Its 67W charging and 6nm Snapdragon 680 chipset provide a smoother, more responsive experience, despite the Umidigi G100 offering a slightly larger CPU core count.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 17, 18, 19, 20, 26, 28, 38, 40, 41, 66 | LTE |
| Speed | HSPA, LTE | HSPA, LTE |
| Technology | GSM / HSPA / LTE | GSM / HSPA / LTE |
| Launch |
|---|
| Announced | 2022, December | 2023, July 10 |
| Status | Available. Released 2024, December 28 | Available. Released 2023, July 10 |
| Body |
|---|
| Build | Glass front, plastic back, plastic frame | - |
| Dimensions | 171 x 77.6 x 8.1 mm (6.73 x 3.06 x 0.32 in) | 160 x 73.2 x 7.9 mm (6.30 x 2.88 x 0.31 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 205 g (7.23 oz) | 180 g (6.35 oz) |
| Display |
|---|
| Protection | - | Corning Gorilla Glass 5 |
| Resolution | 720 x 1640 pixels (~260 ppi density) | 1080 x 2400 pixels, 20:9 ratio (~409 ppi density) |
| Size | 6.9 inches, 113.1 cm2 (~85.2% screen-to-body ratio) | 6.43 inches, 99.8 cm2 (~85.2% screen-to-body ratio) |
| Type | IPS LCD, 120Hz | AMOLED, 90Hz, 430 nits |
| Platform |
|---|
| CPU | Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55) | Octa-core (4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver) |
| Chipset | Unisoc T615 (12 nm) | Qualcomm SM6225 Snapdragon 680 4G (6 nm) |
| GPU | Mali-G57 MP1 | Adreno 610 |
| OS | Android 14 | Android 13, ColorOS 13.1 |
| Memory |
|---|
| Card slot | microSDXC (uses shared SIM slot) | microSDXC |
| Internal | 128GB 6GB RAM, 256GB 8GB RAM | 128GB 8GB RAM, 256GB 8GB RAM |
| Main Camera |
|---|
| Dual | - | 50 MP, f/1.8, (wide), PDAF
Auxiliary lens |
| Features | LED flash | LED flash, HDR, panorama |
| Triple | 50 MP, (wide), AF
2 MP (macro)
Auxiliary lens | - |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera |
|---|
| Single | 16 MP, (wide) | 8 MP, f/2.0, (wide) |
| Video | Yes | 1080p@30fps |
| Sound |
|---|
| 35mm jack | Yes | Yes |
| Loudspeaker | Yes | Yes, with stereo speakers |
| Comms |
|---|
| Bluetooth | 5.2, A2DP, LE | 5.0, A2DP, LE |
| NFC | No | Yes (market/region dependent) |
| Positioning | GPS, GLONASS, GALILEO, BDS | GPS, GALILEO, GLONASS, BDS |
| Radio | FM radio | No |
| USB | USB Type-C, OTG | USB Type-C 2.0, OTG |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band | Wi-Fi 802.11 a/b/g/n/ac, dual-band |
| Features |
|---|
| Sensors | Fingerprint (side-mounted), accelerometer, compass | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Battery |
|---|
| Charging | 20W wired | 67W wired, PD, 76% in 30 min |
| Type | 6000 mAh | Li-Po 5000 mAh |
| Misc |
|---|
| Colors | Rock Black, Interstellar Blue, Lake Green, Starry White | Mist Black, Aqua Green |
| Models | - | CPH2565 |
| Price | About 110 EUR | About 200 EUR |
Umidigi G100
- Potentially lower price point
- Higher CPU core count (may benefit multi-threaded tasks)
- May offer more storage for the price
- Less efficient Unisoc T615 chipset
- Slower 20W charging
- Likely inferior image processing
Oppo A78 4G
- More efficient Snapdragon 680 chipset (6nm)
- Significantly faster 67W charging
- Potentially better camera image processing
- May be slightly more expensive
- Lower CPU clock speeds compared to G100's A75 cores
- Potentially less storage for the price
Display Comparison
Neither device boasts a standout display. While specific display specs (resolution, panel type) are missing, the focus here is on performance. The absence of high refresh rates on both suggests a cost-saving measure. The real differentiator will be color accuracy and brightness, which are not specified, but Oppo generally delivers better calibrated displays in this segment.
Camera Comparison
Without detailed camera specs beyond the presence of cameras, a direct comparison is difficult. However, Oppo’s image processing algorithms are generally more refined, leading to better dynamic range and color accuracy. The Umidigi G100 likely relies on more basic software processing. The absence of information regarding sensor sizes and OIS suggests both phones will struggle in low-light conditions. We can assume both will include a standard macro lens, which are often of limited practical use.
Performance
The core difference lies in the chipsets. The Oppo A78 4G’s Snapdragon 680, fabricated on a 6nm process, offers a significant advantage in power efficiency compared to the Umidigi G100’s 12nm Unisoc T615. While the G100 has an octa-core CPU with two higher-clocked Cortex-A75 cores (1.8 GHz) alongside six Cortex-A55 cores (1.6 GHz), the Snapdragon 680’s Kryo 265 Gold cores (2.4 GHz) are architecturally more advanced and deliver better single-core performance. This translates to snappier app launches and smoother multitasking. The 6nm process also means less heat generation, potentially reducing thermal throttling during sustained workloads. The G100's Unisoc T615 will likely struggle with demanding games and heavier applications.
Battery Life
The Oppo A78 4G’s 67W charging is a game-changer in this price bracket. Oppo claims 76% charge in 30 minutes, drastically reducing downtime. The Umidigi G100’s 20W charging is comparatively slow. While battery capacity isn’t specified, the Snapdragon 680’s superior efficiency means the A78 4G will likely offer comparable or better real-world battery life despite potentially having a smaller battery. The faster charging speed significantly outweighs any potential capacity difference.
Buying Guide
Buy the Umidigi G100 if you need a phone primarily for basic tasks like calling, texting, and light social media, and you value maximizing CPU core count on a tight budget. Buy the Oppo A78 4G if you prefer a more responsive user experience, faster charging speeds, and a chipset built on a more efficient manufacturing process, even if it means a slightly higher upfront cost.
Frequently Asked Questions
❓ Will the Unisoc T615 in the Umidigi G100 struggle with graphically intensive games like PUBG Mobile?
Yes, the Unisoc T615 is a budget chipset and will likely struggle to maintain stable frame rates in demanding games like PUBG Mobile, even on lower settings. Expect noticeable lag and potential frame drops. The Snapdragon 680 in the Oppo A78 4G offers a more capable gaming experience, though still limited to medium settings.
❓ How long does it realistically take to fully charge the Oppo A78 4G from 0% to 100%?
While Oppo advertises 76% in 30 minutes, a full 0-100% charge on the Oppo A78 4G with its 67W charging is expected to take around 45-50 minutes. This is significantly faster than the Umidigi G100, which will likely take over 2 hours with its 20W charging.
❓ Is the difference in CPU core count between the Umidigi G100 and Oppo A78 4G noticeable in everyday use?
Not significantly. While the Umidigi G100 has more cores, the Snapdragon 680’s more efficient architecture and higher clock speeds on its performance cores provide a smoother and more responsive experience in everyday tasks like browsing, social media, and app switching. Core count isn't everything; architecture matters more.
