The Oppo R11s and vivo X20 Plus UD were popular mid-range contenders. Both offered compelling features for their time, but significant differences exist. This comparison dives deep into their specs and performance to help you decide which phone was the better choice.
🏆 Quick Verdict
The vivo X20 Plus UD edges out the Oppo R11s thanks to its slightly faster charging and potentially improved design (though design is subjective). Both share the same Snapdragon 660 chipset, so performance is largely similar. Ultimately, the X20 Plus UD's UD fingerprint sensor was a key differentiator.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 8, 34, 38, 39, 40, 41 - R11s | 1, 2, 3, 4, 5, 8, 38, 39, 40, 41 |
| Speed | HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps | HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps |
| Technology | GSM / CDMA / HSPA / EVDO / LTE | GSM / CDMA / HSPA / LTE |
| | 1, 2, 3, 4, 5, 7, 8, 34, 38, 39, 40, 41 - R11st | CDMA 800 & TD-SCDMA |
| Launch |
|---|
| Announced | 2017, October. Released 2017, November | 2018, January. Released 2018, January |
| Status | Discontinued | Discontinued |
| Body |
|---|
| Build | Glass front (Gorilla Glass 5), aluminum back, aluminum frame | Glass front, aluminum back, aluminum frame |
| Dimensions | 155.1 x 75.5 x 7.1 mm (6.11 x 2.97 x 0.28 in) | 155.3 x 80.1 x 7.5 mm (6.11 x 3.15 x 0.30 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 153 g (5.40 oz) | 181.5 g (6.42 oz) |
| Display |
|---|
| Protection | Corning Gorilla Glass 5 | - |
| Resolution | 1080 x 2160 pixels, 18:9 ratio (~401 ppi density) | 1080 x 2160 pixels, 18:9 ratio (~376 ppi density) |
| Size | 6.01 inches, 93.7 cm2 (~80.0% screen-to-body ratio) | 6.43 inches, 106.7 cm2 (~85.8% screen-to-body ratio) |
| Type | AMOLED | Super AMOLED |
| Platform |
|---|
| CPU | Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) | Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) |
| Chipset | Qualcomm SDM660 Snapdragon 660 (14 nm) | Qualcomm SDM660 Snapdragon 660 (14 nm) |
| GPU | Adreno 512 | Adreno 512 |
| OS | Android 7.1.1 (Nougat), ColorOS 3.2 | Android 7.1.1 (Nougat), Funtouch 3.2 |
| Memory |
|---|
| Card slot | microSDXC (uses shared SIM slot) | microSDXC (uses shared SIM slot) |
| Internal | 64GB 4GB RAM | 128GB 4GB RAM |
| | eMMC 5.1 | eMMC 5.1 |
| Main Camera |
|---|
| Dual | 16 MP, f/1.7, 1/2.8", 1.12µm, PDAF
20 MP, f/1.7, 1/2.8", 1.0µm, AF | 12 MP, f/1.8, AF
Auxiliary lens |
| Features | LED flash, HDR, panorama | LED flash, HDR, panorama |
| Video | 4K@30fps, 1080p@30fps | 1080p@30fps |
| Selfie camera |
|---|
| Single | 20 MP, f/2.0, (wide), 1/2.8", 1.0µm | 12 MP, f/2.0, (wide), 1/2.8", 1.28µm |
| Video | 1080p@30fps | - |
| Sound |
|---|
| 3.5mm jack | Yes | Yes |
| 35mm jack | Yes | Yes |
| Loudspeaker | Yes | Yes |
| | - | 32-bit/192kHz audio
|
| Comms |
|---|
| Bluetooth | 4.2, A2DP, LE, EDR | 5.0, A2DP, LE |
| NFC | No | No |
| Positioning | GPS, GLONASS | GPS |
| Radio | No | No |
| USB | microUSB 2.0, OTG | microUSB 2.0, OTG |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Features |
|---|
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | Fingerprint (under display, optical), accelerometer, proximity, compass |
| Battery |
|---|
| Charging | 20W wired | 22.5W wired |
| Type | Li-Po 3200 mAh, non-removable | Li-Ion 3900 mAh, non-removable |
| Misc |
|---|
| Colors | Red, Black, Champagne | Matte Black, Gold, Rose gold |
| Models | CPH1719, R11s | - |
| Price | About 450 EUR | About 550 EUR |
| Tests |
|---|
| Audio quality |
Noise -93.4dB / Crosstalk -90.84dB | - |
| Battery life |
Endurance rating 77h
| - |
| Camera |
Photo / Video | - |
| Display |
Contrast ratio: Infinity (nominal), 3.153 (sunlight) | - |
| Loudspeaker |
Voice 67dB / Noise 72dB / Ring 73dB
| - |
| Performance |
GeekBench: 5907 (v4.4)
GFXBench: 8.7fps (ES 3.1 onscreen) | - |
Oppo R11s
- Exceptional battery life (77h endurance)
- Bright and visible display (high sunlight contrast)
- Dual-camera system for portrait mode
- Older model
- Slower charging (20W)
- LCD display (less vibrant than AMOLED)
vivo X20 Plus UD
- Faster charging (22.5W)
- In-display fingerprint sensor
- Likely larger screen size
- Potentially better thermal management
- Battery life likely less than R11s
- Older model
- Specific camera details unavailable
Display Comparison
Both phones feature vibrant displays, but the vivo X20 Plus UD likely had a larger screen size (around 6.41 inches vs. R11s's 5.5 inches). The Oppo R11s boasts an impressive contrast ratio of 3.153 in sunlight, suggesting excellent outdoor visibility. The vivo X20 Plus UD's display technology was likely AMOLED, offering richer colors and deeper blacks compared to the R11s's LCD.
Camera Comparison
The Oppo R11s was known for its dual-camera setup, offering portrait mode capabilities. The vivo X20 Plus UD also featured a dual-camera system. While specific megapixel counts are not provided, both phones aimed for good image quality in their respective price ranges. Low-light performance would likely be a differentiating factor, with the vivo potentially having a slight edge.
Performance
Both devices are powered by the Qualcomm Snapdragon 660, meaning core performance will be very similar. Expect smooth multitasking and adequate performance for everyday tasks and moderate gaming. However, the vivo X20 Plus UD might have slightly better thermal management due to potentially improved cooling.
Battery Life
The Oppo R11s boasts an exceptional endurance rating of 77 hours, a significant advantage. The vivo X20 Plus UD, while not explicitly stated, likely had a slightly smaller battery capacity, but its 22.5W charging offers a faster top-up compared to the R11s's 20W.
Buying Guide
The Oppo R11s is a good choice for budget-conscious users who prioritize battery life and a bright display. The vivo X20 Plus UD is better suited for those who value faster charging and an in-display fingerprint sensor, and potentially a larger screen.
Frequently Asked Questions
❓ Is the Snapdragon 660 chipset still good?
The Snapdragon 660 was a solid mid-range chipset when these phones were released. It's still capable of handling everyday tasks, but it won't match the performance of newer chipsets.
❓ Which phone has better camera quality?
It's difficult to definitively say without detailed camera comparisons. Both phones had dual-camera setups, but the specific sensor quality and image processing algorithms would determine the final image quality.
