The vivo Y9s and Samsung Galaxy A51 5G UW represent different approaches to the mid-range smartphone market. The Y9s aims for affordability with a focus on essential features, while the A51 5G UW leverages a more powerful chipset and 5G connectivity, albeit at a potentially higher price point. This comparison dissects the core differences between these two devices, focusing on performance, battery life, and overall value.
🏆 Quick Verdict
For the average user prioritizing smooth multitasking and 5G connectivity, the Samsung Galaxy A51 5G UW is the superior choice. Its Snapdragon 765G chipset delivers a noticeable performance boost over the Y9s' Snapdragon 665, justifying the potential price difference. However, the Y9s remains a viable option for those on a strict budget.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G bands | 1, 3, 5, 8, 34, 38, 39, 40, 41 | 2, 4, 5, 13, 66 |
| 5G bands | - | 260, 261 mmWave |
| Speed | HSPA, LTE | HSPA, LTE, 5G |
| Technology | GSM / CDMA / HSPA / LTE | GSM / HSPA / LTE / 5G |
| | CDMA 800 & TD-SCDMA | - |
| Launch |
|---|
| Announced | 2019, December. Released 2019, December | 2020, August 14 |
| Status | Discontinued | Available. Released 2020, August 14 |
| Body |
|---|
| Build | Glass front, glass back, aluminum frame | Glass front (Gorilla Glass 3), plastic back, aluminum frame |
| Dimensions | 159.3 x 75.2 x 8.7 mm (6.27 x 2.96 x 0.34 in) | 158.8 x 73.4 x 8.6 mm (6.25 x 2.89 x 0.34 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM (pre-installed) |
| Weight | 186.7 g (6.60 oz) | 188.8 g (6.67 oz) |
| Display |
|---|
| Protection | - | Corning Gorilla Glass 3 |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density) | 1080 x 2400 pixels, 20:9 ratio (~405 ppi density) |
| Size | 6.38 inches, 99.9 cm2 (~83.4% screen-to-body ratio) | 6.5 inches, 102.0 cm2 (~87.5% screen-to-body ratio) |
| Type | Super AMOLED | Super AMOLED |
| Platform |
|---|
| CPU | Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) | Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver) |
| Chipset | Qualcomm SDM665 Snapdragon 665 (11 nm) | Qualcomm SM7250 Snapdragon 765G 5G (7 nm) |
| GPU | Adreno 610 | Adreno 620 |
| OS | Android 9.0 (Pie), Funtouch 9 | Android 10, One UI 2 |
| Memory |
|---|
| Card slot | microSDXC (uses shared SIM slot) | microSDXC (uses shared SIM slot) |
| Internal | 128GB 8GB RAM | 128GB 6GB RAM |
| | - | UFS 2.1 |
| Main Camera |
|---|
| Features | LED flash, HDR, panorama | LED flash, panorama, HDR |
| Quad | 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm
2 MP (macro)
Auxiliary lens | 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
12 MP, f/2.2, 123˚ (ultrawide)
5 MP (macro)
Auxiliary lens |
| Single | - | 5 MP, AF |
| Video | 1080p@30fps | 4K@30fps, 1080p@30/120fps; gyro-EIS |
| Selfie camera |
|---|
| Features | HDR | HDR |
| Single | 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm | 32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm |
| Video | 1080p@30fps | 4K@30fps, 1080p@30fps |
| Sound |
|---|
| 3.5mm jack | Yes | Yes |
| 35mm jack | Yes | Yes |
| Loudspeaker | Yes | Yes |
| Comms |
|---|
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE |
| NFC | No | Yes |
| Positioning | GPS, GLONASS, BDS | GPS, GLONASS, GALILEO, BDS |
| Radio | FM radio | FM radio, RDS, recording |
| USB | USB Type-C 2.0, OTG | USB Type-C 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 (under display, optical), accelerometer, gyro, proximity, compass | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| | - | ANT+ |
| Battery |
|---|
| Charging | 18W wired | 15W wired |
| Stand-by | - | Up to 672 h |
| Talk time | - | Up to 5 h |
| Type | 4500 mAh, non-removable | Li-Po 4500 mAh |
| Misc |
|---|
| Colors | Fancy Sky, Knight Black, Nebula Blue | Prism Bricks Blue |
| Models | V1945A, V1945T | SM-A516V |
| Price | About 260 EUR | About 470 EUR |
| SAR | - | 0.70 W/kg (head) 1.25 W/kg (body) |
| SAR EU | - | 0.59 W/kg (head) 1.32 W/kg (body) |
vivo Y9s
- Faster 18W wired charging
- More affordable price point
- Sufficient for basic smartphone tasks
- Less powerful Snapdragon 665 chipset
- Limited gaming performance
- Potentially slower app launch speeds
Samsung Galaxy A51 5G UW
- More powerful Snapdragon 765G chipset
- 5G connectivity for faster data speeds
- Improved gaming performance and multitasking
- Slower 15W wired charging
- Potentially higher price
- 5G can drain battery faster
Display Comparison
While both devices likely feature LCD panels (data not provided), the core difference lies in the processing power driving them. The Snapdragon 765G in the A51 5G UW will contribute to faster image processing and smoother animations. The Y9s, with its Snapdragon 665, will likely exhibit slightly more lag during quick transitions. Without specific display specs like resolution and brightness, it's difficult to definitively declare a winner, but the A51 5G UW's chipset provides a foundation for a more responsive visual experience.
Camera Comparison
Without detailed camera specifications beyond the chipsets, a direct comparison is limited. However, the image signal processor (ISP) within the Snapdragon 765G is significantly more advanced than that of the Snapdragon 665. This translates to better image processing, improved dynamic range, and potentially superior low-light performance on the A51 5G UW. The A51 5G UW is likely to offer more sophisticated camera features and better overall image quality, even if the main sensor resolutions are similar. The Y9s will likely rely more heavily on software processing to compensate for the limitations of its ISP.
Performance
The performance gap is the most significant differentiator. The Samsung Galaxy A51 5G UW’s Snapdragon 765G, built on a 7nm process, offers a substantial advantage over the vivo Y9s’ Snapdragon 665 (11nm). The 765G’s Kryo 475 Prime core at 2.4GHz provides a significant single-core performance boost, crucial for app launch speeds and responsiveness. The 765G also boasts a more capable Adreno 620 GPU, translating to better gaming performance. The Y9s’ Snapdragon 665, while adequate for everyday tasks, will struggle with graphically intensive games and multitasking. The 7nm process of the 765G also contributes to better thermal efficiency, reducing the likelihood of performance throttling under sustained load.
Battery Life
The Samsung Galaxy A51 5G UW’s 15W charging is slower than the vivo Y9s’ 18W charging. However, the Snapdragon 765G’s improved power efficiency partially offsets this. The 7nm process consumes less power than the 11nm process of the Snapdragon 665. While the Y9s might charge slightly faster, the A51 5G UW is likely to offer comparable, if not better, real-world battery life due to its more efficient chipset. The impact of 5G usage on battery life should also be considered; the A51 5G UW will experience greater battery drain when connected to 5G networks.
Buying Guide
Buy the vivo Y9s if you need a functional smartphone for basic tasks like calling, texting, and light social media use, and your budget is the primary concern. Buy the Samsung Galaxy A51 5G UW if you prioritize smoother performance for gaming and demanding apps, require 5G connectivity for faster data speeds, and are willing to spend a bit more for a more future-proof experience.
Frequently Asked Questions
❓ Will the Snapdragon 665 in the vivo Y9s struggle with popular games like PUBG Mobile?
Yes, the Snapdragon 665 is likely to struggle with PUBG Mobile at higher settings. You'll likely need to reduce graphics settings to low and frame rates to achieve a playable experience. The Snapdragon 765G in the A51 5G UW offers a significantly smoother gaming experience.
❓ How much faster is 5G on the Samsung Galaxy A51 5G UW compared to 4G?
5G speeds on the A51 5G UW can be significantly faster than 4G, potentially offering download speeds several times higher. However, actual speeds depend on network availability and coverage in your area. 5G also introduces lower latency, resulting in a more responsive online experience.
❓ Does the slower charging speed of the A51 5G UW significantly impact usability?
While 15W charging is slower than the Y9s' 18W, the Snapdragon 765G's power efficiency helps mitigate the impact. You'll likely still get a full charge overnight, and the improved performance and 5G connectivity offer a more compelling overall experience.
