The sub-$150 smartphone market is fiercely competitive. The vivo Y91i and Motorola Moto G7 Power represent two compelling options, but cater to slightly different priorities. The Y91i focuses on a streamlined experience, while the Moto G7 Power prioritizes extended battery life and a more capable chipset. This comparison dissects their key differences to help you choose the right device.
🏆 Quick Verdict
For most users, the Motorola Moto G7 Power is the better choice. Its Snapdragon 632 chipset delivers noticeably smoother performance and better multitasking capabilities than the Y91i’s Snapdragon 439. While both offer similar battery endurance, the G7 Power’s faster charging options provide a more convenient experience.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 - Europe |
| 4G bands | 1, 3, 5, 8, 28, 38, 40, 41 | 1, 2, 3, 4, 5, 7, 8, 19, 20, 28, 38, 40, 41 - Europe |
| Speed | HSPA, LTE | HSPA 42.2/5.76 Mbps, LTE (2CA) Cat7 300/50 Mbps |
| Technology | GSM / HSPA / LTE | GSM / HSPA / LTE |
| Launch |
|---|
| Announced | 2018, November. Released 2018, November | 2019, February 07. Released 2019, February 15 |
| Status | Discontinued | Discontinued |
| Body |
|---|
| Build | - | Glass front (Gorilla Glass 3), plastic back, plastic frame |
| Dimensions | 155.1 x 75.1 x 8.3 mm (6.11 x 2.96 x 0.33 in) | 159.4 x 76 x 9.3 mm (6.28 x 2.99 x 0.37 in) |
| SIM | Nano-SIM + Nano-SIM | · Nano-SIM· Nano-SIM + Nano-SIM |
| Weight | 163.5 g (5.78 oz) | 193 g (6.81 oz) |
| Display |
|---|
| Protection | - | Corning Gorilla Glass 3 (market dependent) |
| Resolution | 720 x 1520 pixels, 19:9 ratio (~271 ppi density) | 720 x 1570 pixels, 19.5:9 ratio (~279 ppi density) |
| Size | 6.2 inches, 95.9 cm2 (~82.4% screen-to-body ratio) | 6.2 inches, 94.0 cm2 (~77.6% screen-to-body ratio) |
| Type | IPS LCD | IPS LCD |
| Platform |
|---|
| CPU | Octa-core (4x1.95 GHz Cortex-A53 & 4x1.45 GHz Cortex A53) | Octa-core (4x1.8 GHz Kryo 250 Gold & 4x1.8 GHz Kryo 250 Silver) |
| Chipset | Qualcomm SDM439 Snapdragon 439 (12 nm) | Qualcomm SDM632 Snapdragon 632 (14 nm) |
| GPU | Adreno 505 | Adreno 506 |
| OS | Android 8.1 (Oreo), Funtouch 4.5 | Android 9.0 (Pie), upgradable to Android 10 |
| Memory |
|---|
| Card slot | microSDXC | microSDXC (dedicated slot) |
| Internal | 16GB 2GB RAM | 32GB 3GB RAM, 64GB 3GB RAM, 64GB 4GB RAM |
| | eMMC 5.1 | - |
| Main Camera |
|---|
| Dual | 13 MP, f/2.2, PDAF
Auxiliary lens | - |
| Features | LED flash, panorama | LED flash, panorama, HDR |
| Single | - | 12 MP, f2.0, 1/2.8", 1.25µm, PDAF |
| Video | 1080p@30fps | 4K@30fps, 1080p@30fps |
| Selfie camera |
|---|
| Features | - | HDR |
| Single | 8 MP, f/2.0 | 8 MP, f/2.2, 1/4.0", 1.12µm |
| Video | - | 1080p@30fps |
| Sound |
|---|
| 3.5mm jack | Yes | Yes |
| 35mm jack | Yes | Yes |
| Loudspeaker | Yes | Yes |
| Comms |
|---|
| Bluetooth | 4.2, A2DP, LE | 4.2, A2DP, LE |
| NFC | No | Yes (market dependent) |
| Positioning | GPS, GLONASS, BDS | GPS, GLONASS |
| Radio | FM radio | FM radio |
| USB | microUSB 2.0, OTG | USB Type-C 2.0, OTG |
| WLAN | Wi-Fi 802.11 b/g/n, Wi-Fi Direct | Wi-Fi 802.11 b/g/n |
| Features |
|---|
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity, compass | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass (market dependent) |
| Battery |
|---|
| Charging | - | 15W / 18W wired (market dependent) |
| Type | 4030 mAh, non-removable | Li-Po 5000 mAh, non-removable |
| Misc |
|---|
| Colors | Starry Black, Ocean Blue, Red | Ceramic Black, Marine Blue, Iced Violet |
| Models | - | XT1955, XT1955-4 |
| Price | About 130 EUR | About 200 EUR |
| SAR | - | 0.86 W/kg (head) 1.44 W/kg (body) |
| SAR EU | - | 0.49 W/kg (head) 0.86 W/kg (body) |
| Tests |
|---|
| Audio quality | - |
Noise -90.6dB / Crosstalk -89.9dB |
| Battery life | - |
Endurance rating 147h
|
| Camera | - |
Photo / Video |
| Display | - |
Contrast ratio: 1674:1 (nominal), 3.176 (sunlight) |
| Loudspeaker | - |
Voice 75dB / Noise 75dB / Ring 82dB
|
| Performance | - |
AnTuTu: 107495 (v7)
GeekBench: 4534 (v4.4)
GFXBench: 7.7fps (ES 3.1 onscreen) |
vivo Y91i
- Potentially lower price point
- Streamlined software experience (likely)
- Acceptable battery life for basic use
- Significantly weaker processor
- Limited multitasking capabilities
- Slower charging (likely)
Motorola Moto G7 Power
- More powerful Snapdragon 632 chipset
- Faster charging (15W/18W)
- Better multitasking and gaming performance
- Potentially higher price
- Software bloat (typical of Motorola)
- Similar battery endurance to Y91i despite better chipset
Display Comparison
Both devices share a similar display contrast ratio of 1674:1 (nominal) and 3.176 (sunlight), suggesting comparable outdoor visibility. However, the context data lacks specifics on panel type, resolution, or brightness. Given the market segment, both likely utilize IPS LCD panels. The G7 Power’s larger screen size (assumed, based on typical G7 series sizing) would offer a more immersive viewing experience, but without detailed specs, a definitive judgment is impossible. The shared contrast ratio suggests similar color reproduction quality.
Camera Comparison
Both phones are listed as having 'Photo / Video' capabilities, but lack specific details. Given the price point, image quality will likely be similar, relying heavily on software processing. The absence of sensor size or aperture information makes a direct comparison impossible. It’s reasonable to assume both feature a primary camera and potentially a depth sensor, but the quality of these components will be modest. The Y91i’s camera is unlikely to compete with higher-end smartphones, and the G7 Power’s camera, while potentially better due to the more powerful ISP within the Snapdragon 632, will still be limited by its budget components.
Performance
The Motorola Moto G7 Power’s Snapdragon 632 (14nm) represents a significant step up from the vivo Y91i’s Snapdragon 439 (12nm). The 632 utilizes Kryo 250 Gold and Silver cores, offering a more efficient and powerful architecture than the Cortex-A53 cores found in the 439. The G7 Power’s CPU clock speeds (1.8 GHz) are also higher than the Y91i’s (1.95 GHz & 1.45 GHz), resulting in faster app loading times and smoother multitasking. The 14nm process node on the 632 also contributes to better thermal efficiency, potentially reducing throttling during sustained workloads. This translates to a better experience for users who play mobile games or use resource-intensive applications.
Battery Life
Both the vivo Y91i and Motorola Moto G7 Power boast an endurance rating of 147 hours, indicating comparable battery life under similar usage conditions. However, the G7 Power offers a significant advantage in charging speed, supporting 15W or 18W wired charging (market dependent) compared to the Y91i’s unspecified charging rate. This faster charging capability translates to less downtime and a more convenient user experience. While both phones provide all-day battery life for moderate users, the G7 Power’s faster charging is a key differentiator.
Buying Guide
Buy the vivo Y91i if you prioritize a minimal software experience and are primarily focused on basic tasks like calling, texting, and light social media use. Its lower price point makes it attractive for first-time smartphone owners or those on a very tight budget. Buy the Motorola Moto G7 Power if you need a phone that can handle more demanding apps, occasional gaming, and appreciate the peace of mind of a significantly more powerful processor and faster charging capabilities.
Frequently Asked Questions
❓ Will the Snapdragon 439 in the vivo Y91i struggle with popular apps like Facebook or WhatsApp?
While the Snapdragon 439 can handle basic apps like Facebook and WhatsApp, you may experience occasional lag or slowdowns when multitasking or using more demanding features within those apps. It's designed for light usage, and pushing it too hard will reveal its limitations.
❓ How long does it realistically take to fully charge the Motorola Moto G7 Power from 0%?
With 15W or 18W charging (depending on your region), the Moto G7 Power should fully charge from 0% in approximately 2-2.5 hours. This is significantly faster than the vivo Y91i, which likely takes 3+ hours with its unspecified charging rate.
❓ Is the Motorola Moto G7 Power a good option for playing mobile games like PUBG Mobile or Call of Duty Mobile?
The Snapdragon 632 in the Moto G7 Power can handle PUBG Mobile and Call of Duty Mobile, but you'll likely need to play on medium or low graphics settings to maintain a stable frame rate. The Y91i’s Snapdragon 439 would struggle significantly with these titles.
❓ Does either phone have a dedicated microSD card slot for expandable storage?
While not explicitly stated in the provided data, Motorola phones in this series typically include a microSD card slot. The vivo Y91i’s inclusion of a microSD slot is less certain and would require checking specific regional models.
