The vivo Y9s and Xiaomi Mi 9T Pro represent distinct approaches to the mid-range smartphone market. The Y9s prioritizes affordability with a Snapdragon 665, while the Mi 9T Pro aims for near-flagship performance with the older, but still potent, Snapdragon 855. This comparison dissects the key differences to help you determine which device best suits your needs.
🏆 Quick Verdict
For most users, the Xiaomi Mi 9T Pro is the superior choice. Its Snapdragon 855 chipset delivers significantly faster performance, making it ideal for gaming and demanding applications. While both phones offer similar battery endurance, the Mi 9T Pro’s 27W fast charging provides a substantial convenience advantage.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | 1, 3, 5, 8, 34, 38, 39, 40, 41 | 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40 |
| Speed | HSPA, LTE | HSPA, LTE |
| Technology | GSM / CDMA / HSPA / LTE | GSM / HSPA / LTE |
| | CDMA 800 & TD-SCDMA | - |
| Launch |
|---|
| Announced | 2019, December. Released 2019, December | 2019, August 21. Released 2019, August 21 |
| Status | Discontinued | Discontinued |
| Body |
|---|
| Build | Glass front, glass back, aluminum frame | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame |
| Dimensions | 159.3 x 75.2 x 8.7 mm (6.27 x 2.96 x 0.34 in) | 156.7 x 74.3 x 8.8 mm (6.17 x 2.93 x 0.35 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 186.7 g (6.60 oz) | 191 g (6.74 oz) |
| Display |
|---|
| Protection | - | Corning Gorilla Glass 5 |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density) | 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) |
| Size | 6.38 inches, 99.9 cm2 (~83.4% screen-to-body ratio) | 6.39 inches, 100.2 cm2 (~86.1% screen-to-body ratio) |
| Type | Super AMOLED | Super AMOLED, HDR |
| Platform |
|---|
| CPU | Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) | Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) |
| Chipset | Qualcomm SDM665 Snapdragon 665 (11 nm) | Qualcomm SM8150 Snapdragon 855 (7 nm) |
| GPU | Adreno 610 | Adreno 640 |
| OS | Android 9.0 (Pie), Funtouch 9 | Android 9.0 (Pie), upgradable to Android 11, MIUI 12.5 |
| Memory |
|---|
| Card slot | microSDXC (uses shared SIM slot) | No |
| Internal | 128GB 8GB RAM | 64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM |
| | - | UFS 2.1 |
| Main Camera |
|---|
| Features | LED flash, HDR, panorama | Laser AF, Dual-LED flash, HDR, panorama |
| 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 | - |
| Triple | - | 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.4, 53mm (telephoto), 1/4.0", 1.12µm, PDAF, 2x optical zoom
13 MP, f/2.4, 12mm (ultrawide), 1/3.1", 1.12µm |
| Video | 1080p@30fps | 4K@30/60fps, 1080p@30/120/240fps, 1080p@960fps |
| Selfie camera |
|---|
| Features | HDR | HDR |
| Single | 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm | Motorized pop-up 20 MP, f/2.2, (wide), 1/3.4", 0.8µm |
| Video | 1080p@30fps | 1080p@30fps |
| Sound |
|---|
| 3.5mm jack | Yes | Yes |
| 35mm jack | Yes | Yes |
| Loudspeaker | Yes | Yes |
| | - | 24-bit/192kHz audio
|
| Comms |
|---|
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE, aptX HD |
| NFC | No | Yes |
| Positioning | GPS, GLONASS, BDS | GPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a) |
| Radio | FM radio | Yes |
| 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 |
| Battery |
|---|
| Charging | 18W wired | 27W wired, QC4 |
| Type | 4500 mAh, non-removable | Li-Po 4000 mAh, non-removable |
| Misc |
|---|
| Colors | Fancy Sky, Knight Black, Nebula Blue | Carbon black, Red flame, Glacier blue |
| Models | V1945A, V1945T | M1903F11G |
| Price | About 260 EUR | About 150 EUR |
| SAR | - | 1.03 W/kg (head) 0.72 W/kg (body) |
| SAR EU | - | 1.30 W/kg (head) 1.51 W/kg (body) |
| Tests |
|---|
| Audio quality | - |
Noise -93.9dB / Crosstalk -94.2dB |
| Battery life | - | Endurance rating 103h |
| Display | - |
Contrast ratio: Infinite (nominal) |
| Loudspeaker | - |
-26.9 LUFS (Good) |
| Performance | - |
AnTuTu: 368846 (v7), 437823 (v8)
GeekBench: 10684 (v4.4), 2732 (v5.1)
GFXBench: 36fps (ES 3.1 onscreen) |
vivo Y9s
- More affordable price point
- Sufficient for basic smartphone tasks
- Decent battery endurance
- Significantly slower performance
- Less capable camera system
- Slower charging speeds
Xiaomi Mi 9T Pro
- Much faster Snapdragon 855 processor
- Superior gaming performance
- Faster 27W charging with QC4
- Potentially higher price
- May run slightly warmer under heavy load
- Older chipset generation
Display Comparison
Both devices share an 'Infinite' (nominal) contrast ratio, suggesting both utilize AMOLED panels, offering excellent blacks and vibrant colors. However, detailed specifications like peak brightness and color gamut coverage are missing. Given the Mi 9T Pro’s positioning, it likely features a slightly more refined display calibration. The lack of high refresh rate support on either device is a notable omission compared to newer mid-range offerings.
Camera Comparison
Without detailed camera sensor information, a direct comparison is difficult. However, the Mi 9T Pro, being a more premium device, likely features a larger main sensor and more sophisticated image processing algorithms. The Snapdragon 855’s image signal processor (ISP) is also more capable than the 665’s, resulting in better dynamic range and low-light performance. The presence of Optical Image Stabilization (OIS) on the Mi 9T Pro, if equipped, would further enhance image quality, particularly in videos. The Y9s likely relies heavily on software processing to compensate for its less powerful hardware.
Performance
The core difference lies in the chipsets. The Xiaomi Mi 9T Pro’s Snapdragon 855, built on a 7nm process, is a substantial leap over the vivo Y9s’ Snapdragon 665 (11nm). The 855 features a Kryo 485 CPU with a prime core clocked at 2.84 GHz, compared to the Y9s’ 2.0 GHz Kryo 260 Gold core. This translates to significantly faster app loading times, smoother multitasking, and a far superior gaming experience. The 7nm process also contributes to better thermal efficiency, reducing throttling under sustained load. While both phones likely feature similar RAM configurations, the 855’s superior processing power will be the bottleneck, not RAM speed.
Battery Life
Both phones boast an endurance rating of 103 hours, suggesting comparable battery life under similar usage scenarios. However, the Mi 9T Pro’s 27W wired charging with Quick Charge 4 (QC4) support is a significant advantage. This allows for much faster charging times – a full charge from 0-100% will be considerably quicker than the Y9s’ 18W charging. While battery capacity isn’t specified, the faster charging speed effectively mitigates any potential capacity difference.
Buying Guide
Buy the vivo Y9s if you need a highly affordable smartphone for basic tasks like calling, texting, and light social media use. Its Snapdragon 665 is sufficient for these everyday activities. Buy the Xiaomi Mi 9T Pro if you prioritize performance for gaming, video editing, or multitasking, and value faster charging speeds. The 855 chipset offers a noticeable upgrade in responsiveness and capability.
Frequently Asked Questions
❓ Will the Snapdragon 665 in the vivo Y9s struggle with demanding games like PUBG or Call of Duty?
Yes, the Snapdragon 665 is not ideally suited for graphically intensive games. While you may be able to run them at lower settings, expect noticeable frame drops and potential lag, especially during intense action sequences. The Mi 9T Pro’s Snapdragon 855 provides a much smoother and more enjoyable gaming experience.
❓ Does the Xiaomi Mi 9T Pro’s Snapdragon 855 tend to overheat during prolonged gaming sessions?
The Snapdragon 855 is known to generate more heat than newer chipsets. However, the Mi 9T Pro likely incorporates thermal management solutions to mitigate this. While some throttling may occur during extended gaming, it shouldn’t be severe enough to cause significant performance degradation. The 7nm process helps compared to older 10nm chips.
❓ How long will it take to fully charge each phone from 0%?
With its 18W charging, the vivo Y9s will likely take around 2-3 hours to fully charge. The Xiaomi Mi 9T Pro, with its 27W QC4 support, should charge from 0-100% in approximately 1 hour to 1 hour and 30 minutes, offering a significant time saving.
