Overall Score
60.4Category Breakdown
Overall(#2613)60.4
Performance(#2644)64.8
Camera(#4958)42.4
Display(#2056)79.5
Battery(#12357)43.5
Build(#953)79.8
Comparisons Featuring vivo X21 UD
Short Review
- The vivo X21 UD features a sleek design with a glass front and aluminum back, measuring 154.5 x 74.8 x 7.4 mm and weighing 156.2g.
- Its 6.28-inch Super AMOLED display offers a resolution of 1080 x 2280 pixels, delivering vibrant colors and sharp images at approximately 402 ppi.
- Powered by the Qualcomm Snapdragon 660 chipset, the phone provides reliable performance with its octa-core CPU and Adreno 512 GPU, supported by 6GB of RAM.
- The camera system includes a 12 MP rear camera with dual pixel PDAF and a 12 MP front camera, both capable of capturing decent images, though lacking optical image stabilization.
- The battery capacity is 3200 mAh, with 18W charging support, ensuring adequate daily usage.
- Running on Android 8.1 with Funtouch 4, the software experience is smooth but may feel dated compared to newer versions.
- Connectivity options include dual-band Wi-Fi and Bluetooth 5.0, while it lacks 5G support.
- The absence of wireless charging and stereo speakers is noted, but a headphone jack is included.
- Overall, the vivo X21 UD combines solid specifications with a stylish design, making it a competent device for everyday tasks.
Specifications
General
Release Date2018
Announced2018
DescriptionN/A
Display
Size6.28"
TypeSuper AMOLED
Resolution1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
PPI1080
Refresh Rate60Hz
Peak BrightnessN/A
HDR Support✗
ProtectionCorning Gorilla Glass 3
Performance
ChipsetQualcomm SDM660 Snapdragon 660 (14 nm)
CPUOcta-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPUAdreno 512
Memory128GB 6GB RAM
Expandable Storage✗
Card SlotmicroSDXC (uses shared SIM slot)
Camera
Main Camera12 MP
Main Camera Details12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF5 MP, f/2.4, (depth)
Front Camera12 MP
Front Camera Details12 MP, f/2.0, (wide), 1/2.8", 1.28µm
Video Recording1080p@30fps
Selfie Video1080p@30fps
OIS✗
Night Mode✗
RAW Support✗
Battery
Capacity3200 mAh
Battery DetailsLi-Ion 3200 mAh, non-removable
Charging Details18W wired
Fast Charging✗
Wireless Charging✗
Build & Design
Dimensions154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)
Weight156.2 g
MaterialsGlass front (Gorilla Glass 3), aluminum back, aluminum frame
Water ResistanceN/A
ColorsBlack, Ruby Red
Foldable✗
Connectivity
SIMNano-SIM + Nano-SIM
NetworkGSM / CDMA / HSPA / LTE
Network SpeedHSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
5G✗
4G✓
WiFiWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth5.0, A2DP, LE
NFC✗
USBmicroUSB 2.0, OTG
IR Blaster✗
Headphone Jack✓
Radio✗
PositioningGPS, GLONASS
Software
Operating SystemAndroid 8.1 (Oreo), Funtouch 4
OS VersionAndroid 8.1 (Oreo), Funtouch 4
Security
Fingerprint✓
Face Unlock✗
SensorsFingerprint (under display, optical), accelerometer, proximity, compass
Audio
Stereo Speakers✗
LoudspeakerYes
Audio JackYes