| Product |
Vivo X21
|
Xiaomi Redmi K80 Ultra
|
| Battery |
| Charging |
18W wired |
100W wired, PD3.0
Bypass charging |
| Type |
Li-Ion 3200 mAh, non-removable |
Si/C Li-Ion 7410 mAh |
| Body |
| Build |
Glass front (Gorilla Glass 3), aluminum back, aluminum frame |
Glass front, aluminum frame |
| Dimensions |
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in) |
163.1 x 77.9 x 8.2 mm (6.42 x 3.07 x 0.32 in) |
| SIM |
Nano-SIM + Nano-SIM |
Nano-SIM + Nano-SIM |
| Weight |
156.2 g (5.50 oz) |
219 g (7.72 oz) |
| |
- |
IP68 dust tight and water resistant (immersible up to 2m for 30 min) |
| Comms |
| Bluetooth |
5.0, A2DP, LE |
5.4, A2DP, LE, LHDC 5 |
| Infrared port |
- |
Yes |
| NFC |
No |
Yes |
| Positioning |
GPS, GLONASS |
GPS (L1+L5), BDS (B1I+B1C+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), NavIC, GLONASS |
| Radio |
FM radio |
Unspecified |
| USB |
microUSB 2.0, OTG |
USB Type-C |
| WLAN |
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct |
| Display |
| Protection |
Corning Gorilla Glass 3 |
Scratch/drop-resistant glass |
| Resolution |
1080 x 2280 pixels, 19:9 ratio (~402 ppi density) |
1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density) |
| Size |
6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio) |
6.83 inches, 114.5 cm2 (~90.2% screen-to-body ratio) |
| Type |
Super AMOLED |
OLED, 68B colors, 144Hz, Dolby Vision, HDR10+, HDR Vivid, 1800 nits (HBM), 3200 nits (peak) |
| Features |
| Sensors |
Fingerprint (rear-mounted), accelerometer, proximity, compass |
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass |
| Launch |
| Announced |
2018, March. Released 2018, March |
2025, June 26 |
| Status |
Discontinued |
Available. Released 2025, June 26 |
| Main Camera |
| Dual |
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF
5 MP, f/2.4, (depth) |
50 MP, f/1.9, 23mm (wide), 1/1.55", 1.0µm, PDAF, OIS
8 MP, 119˚ (ultrawide), 1/4.0", 1.12µm |
| Features |
LED flash, HDR, panorama |
Color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama |
| Video |
1080p@30fps |
8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS |
| Memory |
| Card slot |
microSDXC (uses shared SIM slot) |
No |
| Internal |
64GB 6GB RAM, 128GB 6GB RAM |
256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM |
| |
eMMC 5.1 |
UFS 4.1 |
| Misc |
| Colors |
Black, Aurora White, Ruby Red |
Gray, White, Blue, Green |
| Models |
1725, X21A |
- |
| Network |
| 2G bands |
GSM 850 / 900 / 1800 / 1900 |
GSM 850 / 900 / 1800 / 1900 |
| 3G bands |
HSDPA 850 / 900 / 1900 / 2100 |
HSDPA 800 / 850 / 900 / 1700(AWS) / 2100 |
| 4G bands |
1, 2, 3, 5, 8, 34, 38, 39, 40, 41 |
1, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66 |
| 5G bands |
- |
1, 3, 5, 7, 8, 26, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA |
| Speed |
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps |
HSPA, LTE, 5G |
| Technology |
GSM / CDMA / HSPA / LTE |
GSM / CDMA / HSPA / CDMA2000 / LTE / 5G |
| |
CDMA 800 & TD-SCDMA |
CDMA2000 1x |
| Platform |
| Chipset |
Qualcomm SDM660 Snapdragon 660 (14 nm) |
Mediatek Dimensity 9400+ (3 nm) |
| CPU |
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) |
Octa-core (1x3.63 GHz Cortex-X925 & 3x3.3 GHz Cortex-X4 & 4x2.4 GHz Cortex-A720) |
| GPU |
Adreno 512 |
Immortalis-G925 |
| OS |
Android 8.1 (Oreo), Funtouch 4 |
Android 15, HyperOS 2 |
| Selfie camera |
| Features |
- |
HDR |
| Single |
12 MP, f/2.0, (wide), 1/2.8", 1.28µm |
20 MP, (wide), 1/2.0", 0.8µm |
| Video |
1080p@30fps |
1080p@30/60fps |
| Sound |
| 3.5mm jack |
Yes |
No |
| Loudspeaker |
Yes |
Yes, with stereo speakers |
| |
32-bit/192kHz Hi-Res audio |
24-bit/192kHz Hi-Res & Hi-Res Wireless audio |
