vivo
Side-by-side technical data
vivo X21 UD vs vivo iQOO Z11xa
Compare up to four phones using typed, normalized technical data. Measurements stay numeric, capabilities stay boolean, and options stay comparable.
The verdict
Your pick: vivo iQOO Z11xa, ahead on Performance & hardware, Camera, Connectivity and Battery & charging. Unless Design & display decides it for you.
| Category | X21 UD | iQOO Z11xa |
|---|---|---|
| Design & display | 7.5 | 6.9 |
| Performance & hardware | 4.1 | 6.7 |
| Camera | 3.6 | 3.8 |
| Connectivity | 4.2 | 5.8 |
| Battery & charging | 2.7 | 6.5 |
Which one is for you?
vivo X21 UD, if you care about…
- Display Technology
- Super AMOLED
- against IPS LCD
- Display Pixel Density
- 402 ppi
- against 382 ppi
- Weight
- 156.2 g
- against 219 g
- Body Thickness
- 7.4 mm
- against 8.39 mm
vivo iQOO Z11xa, if you care about…
- Battery Capacity
- 7,200 mAh
- against 3,200 mAh
- RAM Capacity
- 8 GB
- against 6 GB
- Wi-Fi Standards
- Wi-Fi 6 (802.11ax)
- against Wi-Fi 802.11a/b/g/n/ac
- Storage Type
- UFS 3.1
- against eMMC 5.1
Specification comparison
Performance
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| Processor Model | Qualcomm Snapdragon 660 | MediaTek Dimensity 7400 Turbo |
| Processor Process Size | 14 nm | 4 nm Best value |
| Graphics GPU | Qualcomm Adreno 512 | Mali-G615 MC2 |
| Storage Type | eMMC 5.1 | UFS 3.1 Best value |
| Maximum CPU Clock | 2.2 GHz | 2.6 GHz Best value |
| Maximum Storage Capacity | 128 GB | 256 GB Best value |
| AnTuTu Score | — | 890,000 |
| Geekbench 6 Single-Core | 342 | — |
| Geekbench 6 Multi-Core | 1,232 | — |
| CPU Description | Octa-core: 4 × 2.2 GHz Kryo 260 Gold and 4 × 1.8 GHz Kryo 260 Silver | — |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | — |
| RAM Capacity | 6 GB | 8 GB Best value |
| RAM Type | DDR4 | — |
| Expandable Storage | Yes Best value | No |
| AnTuTu version | — | — |
| 3DMark Wild Life Extreme | — | — |
| Maximum memory card | 256 GB | — |
Design
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| Body Colors | Black, Red | — |
| Body Thickness | 7.4 mm Best value | 8.39 mm |
| Body Width | 74.8 mm | 78.43 mm |
| Body Height | 154.5 mm | 166.64 mm |
| Weight | 156.2 g Best value | 219 g |
| Usable Surface | 85.2 % | — |
| Body Materials | Glass, Aluminium Alloy Best value | Plastic |
| Resistance Features | — | IP68, IP69 |
| Waterproof Depth | — | 1.5 m |
| Drop Resistance Class | — | — |
| Repairability Class | — | — |
| Foldable | No | No |
| Rugged Build | No | No |
| Drop Test Count | — | — |
| Unfolded thickness | — | — |
| QWERTY keyboard | — | — |
Battery
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| Battery Efficiency Rating | — | — |
| Battery Capacity | 3,200 mAh | 7,200 mAh Best value |
| Battery Type | Li-Ion | Si-Carbon Li-Ion Best value |
| Fast Charge Power | 18 W | 44 W Best value |
| Battery Features | Fast Charging, Battery Level Indicator, Rechargeable | Battery Level Indicator, Charger Included, Fast Charging, Rechargeable |
| Battery Endurance | — | — |
| Wireless charging power | — | — |
| Charge cycles | — | — |
| Talk time | — | — |
| Standby time | — | — |
| Music playback time | — | — |
| Reverse wireless charging power | — | — |
Display
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| Display Aspect Ratio | 19:9 | 19.5:9 |
| Display Technology | Super AMOLED Best value | IPS LCD |
| Peak Display Brightness | — | 1,300 nits |
| Display Diagonal | 6.28″ | 6.76″ Best value |
| Display Horizontal Resolution | 1,080 px | 1,080 px |
| Display Vertical Resolution | 2,280 px | 2,344 px Best value |
| Display Pixel Density | 402 ppi Best value | 382 ppi |
| Display Refresh Rate | — | 120 Hz |
| Touch Sampling Rate | — | — |
| Display Contrast Ratio | — | — |
| Display Features | Gorilla Glass 3, Touchscreen | HDR10, HDR10+, Touchscreen |
| Integrated Projector | No | No |
| Projector Brightness | — | — |
| Projector Horizontal Resolution | — | — |
| Projector Vertical Resolution | — | — |
| Cover display diagonal | — | — |
| Cover display refresh rate | — | — |
| Cover display peak brightness | — | — |
| Display colors | — | — |
Sensors
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| Fingerprint Sensor Placement | Under Display | Side |
Sensor
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Proximity Sensor, Compass, Gyroscope | Fingerprint Sensor |
Software
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| Operating System | Android 8.1 | Android 16 |
| OS Family | Android | Android |
| OS Version | 8 | 16 Best value |
| OS Update Support | — | — |
| Direct OS Updates | No | No |
| Google Services | — | — |
| Web browser | — | — |
| Java (J2ME) | — | — |
| Widevine L1 | — | — |
Connectivity
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| SIM Configurations | Dual Nano-SIM | Dual Nano-SIM |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B850, 3G UMTS B900, 3G UMTS 1900, 3G UMTS 2100, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B5, 4G LTE B8, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41 | 4G LTE B1 |
| Cellular Technologies | GSM, HSPA, LTE, 4G | 5G Best value |
| Wi-Fi Standards | Wi-Fi 802.11a/b/g/n/ac | Wi-Fi 6 (802.11ax) Best value |
| Wi-Fi Features | Dual Band, Wi-Fi Direct | Dual Band |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.4 Best value |
| Bluetooth Profiles | A2DP, LE | A2DP |
| Navigation Systems | GPS, GLONASS | GPS, GLONASS, BeiDou, Galileo Best value |
| Connectivity Features | 3.5 mm Audio Jack, FM Radio, microUSB, USB 2.0, USB OTG | Infrared, USB 2.0, USB Type-C |
| USB Version | microUSB | USB 2.0 |
| SAR American Head | — | — |
| SAR American Body | — | — |
| SAR (EU) head | — | — |
| SAR (EU) body | — | — |
| Messaging | — | — |
| Max. download speed | 300 Mbps | 3,270 Mbps Best value |
| Max. upload speed | 50 Mbps | 1,400 Mbps Best value |
Audio
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| Microphone Count | 2 | — |
| Audio Features | A2DP, LE, Loudspeaker, 32-bit/192 kHz Audio | LDAC, Stereo Speakers Best value |
| Alert types | — | — |
Technical
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| EAN / GTIN | — | — |
| UPC | — | — |
| Launch price | — | — |
| MPN | — | — |
| Launch price (USD) | — | — |
Features
| Specification | X21 UD | iQOO Z11xa |
|---|---|---|
| Built-in functions | — | — |
