Tecno Phantom X vs. Xiaomi Mi 11i: A Detailed Comparison of Performance and Battery Life
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🏆 Quick Verdict
For users prioritizing raw performance and a brighter display, the Xiaomi Mi 11i is the clear winner. However, the Tecno Phantom X offers respectable endurance with its 122-hour battery rating, making it a better choice for those who value longevity over peak speed.
| PHONES | ||
|---|---|---|
| Phone Names | Tecno Phantom X | Xiaomi Mi 11i |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | LTE | 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40, 41, 66 |
| 5G bands | - | 1, 3, 5, 7, 8, 20, 28, 38, 41, 77, 78 SA/NSA |
| Speed | HSPA, LTE | HSPA, LTE, 5G |
| Technology | GSM / HSPA / LTE | GSM / HSPA / LTE / 5G |
| Launch | ||
|---|---|---|
| Announced | 2021, June 24 | 2021, March 29 |
| Status | Available. Released 2021, July 06 | Available. Released 2021, May 31 |
| Body | ||
|---|---|---|
| Build | Glass front, glass back (Gorilla Glass 5) | - |
| Dimensions | 163.5 x 73.8 x 8.7 mm (6.44 x 2.91 x 0.34 in) | 163.7 x 76.4 x 7.8 mm (6.44 x 3.01 x 0.31 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 201 g (7.09 oz) | 196 g (6.91 oz) |
| - | IP53, dust and splash resistant | |
| Display | ||
|---|---|---|
| Protection | - | Corning Gorilla Glass 5 |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~385 ppi density) | 1080 x 2400 pixels, 20:9 ratio (~395 ppi density) |
| Size | 6.7 inches, 110.2 cm2 (~91.3% screen-to-body ratio) | 6.67 inches, 107.4 cm2 (~85.9% screen-to-body ratio) |
| Type | Super AMOLED, 90Hz | Super AMOLED, 120Hz, HDR10+, 900 nits (HBM), 1300 nits (peak) |
| Platform | ||
|---|---|---|
| CPU | Octa-core (2x2.05 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) | Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) |
| Chipset | Mediatek MT6785V/CD Helio G95 (12 nm) | Qualcomm SM8350 Snapdragon 888 5G (5 nm) |
| GPU | Mali-G76 MC4 | Adreno 660 |
| OS | Android 11, HIOS 7.6 | Android 11, MIUI 12 |
| Memory | ||
|---|---|---|
| Card slot | microSDXC (dedicated slot) | No |
| Internal | 256GB 8GB RAM | 128GB 8GB RAM, 256GB 8GB RAM |
| - | UFS 3.1 | |
| Main Camera | ||
|---|---|---|
| Dual | 48 MP, f/2.2, (wide), 1/2.0", 0.8µm 8 MP, f/2.2, 105˚ (ultrawide), 1/4.0", 1.12µm | - |
| Features | Laser AF, Quad-LED flash, panorama, HDR | Color spectrum sensor, LED flash, HDR, panorama |
| Single | - | 20 MP, f/2.5, (wide), 1/3.4", 0.8µm |
| Triple | 50 MP, f/1.9, (wide), 1/1.3", 1.2µm, dual pixel PDAF 13 MP, f/2.4, 50mm (telephoto), PDAF, 2x optical zoom 8 MP, f/2.3, 120˚ (ultrawide), 1/4.0", 1.12µm, AF | 108 MP, f/1.8, 26mm (wide), 1/1.52", 0.7µm, PDAF 8 MP, f/2.2, 119˚ (ultrawide) 5 MP, f/2.4, 50mm (telephoto macro), 1/5.0", 1.12µm, AF |
| Video | 4K@30/60fps, 1080p@30fps | 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS, HDR10+ |
| Selfie camera | ||
|---|---|---|
| Dual | 48 MP, f/2.2, (wide), 1/2.0", 0.8µm 8 MP, f/2.2, 105˚ (ultrawide), 1/4.0", 1.12µm | - |
| Features | Dual-LED flash | HDR |
| Single | - | 20 MP, f/2.5, (wide), 1/3.4", 0.8µm |
| Video | 1080p@30fps | 1080p@30fps, 720p@120fps |
| Sound | ||
|---|---|---|
| 3.5mm jack | Yes | No |
| 35mm jack | Yes | No |
| Loudspeaker | Yes | Yes, with stereo speakers |
| - | 24-bit/192kHz audio | |
| Comms | ||
|---|---|---|
| Bluetooth | 5.0, A2DP, LE | 5.2, A2DP, LE |
| Infrared port | - | Yes |
| NFC | No | Yes (market/region dependent) |
| Positioning | GPS | GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5) |
| Radio | FM radio | No |
| USB | USB Type-C 2.0, OTG | USB Type-C 2.0, OTG |
| WLAN | Wi-Fi 802.11 b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
| Features | ||
|---|---|---|
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer |
| Battery | ||
|---|---|---|
| Charging | 33W wired, 70% in 30 min | 33W wired, PD3.0, QC3, 100% in 52 min |
| Type | 4700 mAh | Li-Po 4520 mAh |
| Misc | ||
|---|---|---|
| Colors | Starry Night Blue, Monet Summer | Celestial Silver, Frosty White, Cosmic Black |
| Models | AC8 | M2012K11G |
| Price | About 470 EUR | About 230 EUR |
| SAR | - | 0.95 W/kg (head) 0.74 W/kg (body) |
| SAR EU | - | 0.57 W/kg (head) 0.77 W/kg (body) |
| Tests | ||
|---|---|---|
| Battery life | Endurance rating 122h | Endurance rating 96h |
| Camera | Photo / Video | Photo / Video |
| Display | Contrast ratio: Infinite (nominal) | Contrast ratio: Infinite (nominal) |
| Loudspeaker | -26.7 LUFS (Good) | -26.0 LUFS (Very good) |
| Performance | AnTuTu: 309055 (v8) GeekBench: 1670 (v5.1) GFXBench: 17fps (ES 3.1 onscreen) | AnTuTu: 690021 (v8) GeekBench: 3641 (v5.1) |
Tecno Phantom X
- Longer battery life (122h endurance)
- More affordable price point (likely)
- Decent performance for everyday tasks
- Significantly weaker processor than the Mi 11i
- Dimmer display, less suitable for outdoor use
- Camera likely lacks advanced features
Xiaomi Mi 11i
- Flagship-level Snapdragon 888 performance
- Much brighter display for better visibility
- Faster charging speed (100% in 52 minutes)
- Shorter battery life (96h endurance)
- Higher price tag
- Potential for thermal throttling under heavy load
Display Comparison
The Xiaomi Mi 11i boasts a significantly brighter display, reaching a measured 939 nits compared to the Tecno Phantom X’s 405 nits. This difference is crucial for outdoor visibility, making the Mi 11i far more usable in direct sunlight. Both devices share an 'Infinite' (nominal) contrast ratio, suggesting standard AMOLED performance. While neither specifies refresh rates, the brightness advantage of the Mi 11i is a substantial win for media consumption and general usability.
Camera Comparison
Both phones offer photo and video capabilities, but detailed sensor information is lacking. Without specifics, it’s difficult to make a definitive judgment. However, given the Mi 11i’s positioning as a more premium device, it likely incorporates a more sophisticated camera system with features like optical image stabilization (OIS) and larger sensor sizes. The Phantom X likely relies on software processing to enhance image quality, but will be limited by its hardware. The absence of details on lens apertures further complicates a direct comparison.
Performance
The core difference lies in the chipsets. The Xiaomi Mi 11i’s Snapdragon 888 (5nm) is a flagship-level processor, featuring a Cortex-X1 prime core clocked at 2.84 GHz, vastly outperforming the Tecno Phantom X’s MediaTek Helio G95 (12nm). The Snapdragon 888’s architecture, with its Cortex-A78 performance cores, delivers superior multi-core and single-core performance. This translates to faster app loading times, smoother multitasking, and a significantly better gaming experience on the Mi 11i. The G95 in the Phantom X is capable, but will struggle with demanding titles at higher settings. The 5nm process of the Snapdragon 888 also contributes to better thermal efficiency, reducing the likelihood of throttling under sustained load.
Battery Life
The Tecno Phantom X claims an endurance rating of 122 hours, while the Xiaomi Mi 11i manages 96 hours. This suggests the Phantom X offers superior battery life under typical usage. However, the Mi 11i compensates with faster charging – achieving 100% in 52 minutes, while the Phantom X reaches 70% in 30 minutes. The Snapdragon 888’s power consumption will drain the Mi 11i’s battery faster, but the convenience of quicker top-ups is a significant advantage. The difference in endurance suggests the Phantom X may have more aggressive power management settings.
Buying Guide
Buy the Tecno Phantom X if you need a phone that can reliably last through a full day of moderate use and appreciate a more balanced feature set. Buy the Xiaomi Mi 11i if you are a power user who demands the fastest possible performance for gaming, video editing, or other demanding tasks, and are willing to trade some battery life for that speed.