OnePlus 9 vs Xiaomi 12X
A spec-by-spec comparison of the OnePlus 9 and the Xiaomi 12X, taken from their full specification sheets. Green marks the better value in each measured row.
Head to head
| OnePlus 9 | Xiaomi 12X |
|---|
| Price | $175 | $174 |
| Our rating | 8/10 | 7/10 |
| Battery | 4,500 mAh | 4,500 mAh |
| Wired charging | 65W | 67W |
| RAM (max) | 12 GB | 12 GB |
| Storage (max) | 256 GB | 256 GB |
| Screen size | 6.55 in | 6.28 in |
| Refresh rate | 120 Hz | 120 Hz |
| Main camera | 50 MP | 50 MP |
| Weight (lower is lighter) | 192 g | 176 g |
| Released | Mar 2021 | Dec 2021 |
Summary: OnePlus 9 is ahead on our rating, screen size. Xiaomi 12X is ahead on wired charging, weight (lower is lighter).
★ Which should you buy? Specs are close to an even split here, so Xiaomi 12X is the better buy — the extra cost of the other one isn't matched by a clear spec advantage.
Reviewed by the infozme.com Editorial Team — see how we research & rate phones.
Display
| OnePlus 9 | Xiaomi 12X |
|---|
| Type | Fluid AMOLED, 120Hz, HDR10+ | AMOLED, 68B colors, 120Hz, Dolby Vision, HDR10+, 1100 nits (peak) |
| Size | 6.55 inches | 6.28 inches |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~402 ppi density) | 1080 x 2400 pixels, 20:9 ratio (~419 ppi density) |
| Protection | Corning Gorilla Glass | Corning Gorilla Glass Victus |
Platform
| OnePlus 9 | Xiaomi 12X |
|---|
| Chipset | Qualcomm SM8350 Snapdragon 888 5G (5 nm) | Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) |
| CPU | Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) | Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585) |
| GPU | Adreno 660 | Adreno 650 |
| OS | — | Android 11, MIUI 13 (upgradable to Android 12/MIUI 13 for global models) |
Memory
| OnePlus 9 | Xiaomi 12X |
|---|
| Card slot | No | No |
| Internal | 128GB 8GB RAM, 256GB 12GB RAM | 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM (UFS 3.1) |
| Type | UFS 3.1 | — |
Main Camera
| OnePlus 9 | Xiaomi 12X |
|---|
| Modules | 50 MP, f/1.8, 23mm (wide), 1/1.56", 1.0µm, PDAF; 48 MP, f/2.2, 14mm (ultrawide), 1/2.0", 0.8µm; 2 MP, f/2.4, (monochrome) | — |
| Features | Hasselblad Color Calibration, Dual-LED flash, HDR, panorama | Dual-LED dual-tone flash, HDR, panorama |
| Video | 8K@30fps, 4K@30/60fps, 1080p@30/60/240fps, Auto HDR, gyro-EIS | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS |
| Triple | — | 50 MP, f/1.9, 26mm (wide), 1/1.56", 1.0µm, PDAF, OIS; 13 MP, f/2.4, 12mm, 123˚ (ultrawide), 1/3.06", 1.12µm; 5 MP, f/2.4, 50mm (telemacro), AF |
Selfie Camera
| OnePlus 9 | Xiaomi 12X |
|---|
| Modules | 16 MP, f/2.4, (wide), 1/3.06", 1.0µm | — |
| Features | Auto-HDR | HDR, panorama |
| Video | 1080p@30fps, gyro-EIS | 1080p@30/60fps, 720p@120fps |
| Single | — | 32 MP, f/2.5, 26mm (wide), 0.7µm |
Battery
| OnePlus 9 | Xiaomi 12X |
|---|
| Type | Li-Po 4500 mAh, non-removable | Li-Po 4500 mAh, non-removable |
| Charging | 65W wired, 100% in 29 min (advertised); 15W wireless (Qi) | 67W wired, PD3.0, QC4, 100% in 39 min (advertised) |
| Wireless Charging | — | No |
Body
| OnePlus 9 | Xiaomi 12X |
|---|
| Dimensions | 160 x 73.9 x 8.1 mm | 152.7 x 69.9 x 8.2 mm |
| Weight | 192g (EU/NA), 183g (IN/CN) | 176 g |
| Build | Glass front (Gorilla Glass), glass back (Gorilla Glass), plastic frame | Glass front (Gorilla Glass Victus), glass back, aluminum frame |
| SIM | — | Dual SIM (Nano-SIM, dual stand-by) |
Comms
| OnePlus 9 | Xiaomi 12X |
|---|
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
| Bluetooth | 5.2, A2DP, LE, aptX HD | 5.1, A2DP, LE |
| Positioning | GPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), SBAS, A-GPS | GPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5) |
| NFC | Yes | Yes (market/region dependent) |
| Radio | No | No |
| USB | USB Type-C 3.1, OTG | USB Type-C 2.0, OTG |
| Infrared port | — | Yes |
Launch
| OnePlus 9 | Xiaomi 12X |
|---|
| Announced | 2021, March 23 | 2021, December 28 |
| Status | Released 2021, March 26 | Available. Released 2021, December 31 (China); March 2022 (Global) |
| OS | Android 11, upgradable to Android 13, OxygenOS 13 | — |
Frequently asked questions
Which is lighter, OnePlus 9 or Xiaomi 12X?
Xiaomi 12X — 192 g for the OnePlus 9 versus 176 g for the Xiaomi 12X.
Which is newer, OnePlus 9 or Xiaomi 12X?
Xiaomi 12X — Mar 2021 for the OnePlus 9 versus Dec 2021 for the Xiaomi 12X.
Is the OnePlus 9 or the Xiaomi 12X rated higher?
We rate the OnePlus 9 8/10 and the Xiaomi 12X 7/10.
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