Category Breakdown
BQ Aquaris X2 Pro
vivo X21 UD
Performance
74.379.6
Camera
65.919.1
Display
58.982.8
Battery
25.425.7
Build
77.676.2
Connectivity
66.359.3
Audio
8.98.9
Overall
49.246.8
Summary
- The BQ Aquaris X2 Pro features a 5.65-inch IPS LCD display with a resolution of 1080 x 2160 pixels, while the vivo X21 UD has a larger 6.28-inch Super AMOLED display with a resolution of 1080 x 2280 pixels.
- Both devices are powered by the Qualcomm Snapdragon 660 chipset, but the BQ offers configurations with 4GB or 6GB of RAM, whereas the vivo has 6GB of RAM only.
- In terms of camera capabilities, both phones have a dual rear camera setup with a 12 MP main sensor; however, the vivo's selfie camera is superior at 12 MP compared to the BQ's 8 MP.
- The BQ Aquaris X2 Pro has a 3100 mAh battery, slightly smaller than the vivo's 3200 mAh, but both support 18W charging.
- The BQ runs on Android One, providing a clean software experience, while the vivo operates on Funtouch 4, which may include additional customizations.
- Build quality is comparable, with both featuring glass fronts and aluminum frames, but the vivo is slightly lighter and thinner.
Side-by-side Specification Comparison
BQ Aquaris X2 Pro
vivo X21 UD
General
Release Date
2018
2018
Announced
2018
2018
Description
N/A
N/A
Display
Size
5.65"
6.28"
Type
IPS LCD
Super AMOLED
Resolution
1080 x 2160 pixels, 18:9 ratio (~427 ppi density)
1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
PPI
1080
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
Corning Gorilla Glass (unspecified version)
Corning Gorilla Glass 3
Performance
Chipset
Qualcomm SDM660 Snapdragon 660 (14 nm)
Qualcomm SDM660 Snapdragon 660 (14 nm)
CPU
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU
Adreno 512
Adreno 512
Memory
64GB 4GB RAM, 128GB 6GB RAM
128GB 6GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (uses shared SIM slot)
microSDXC (uses shared SIM slot)
Camera
Main Camera
12 MP, f/1.8, 1/2.8", 1.29µm, dual pixel PDAF5 MP, f/2.4, (depth)
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF5 MP, f/2.4, (depth)
Main Camera Features
Dual-LED dual-tone flash, auto-HDR, panorama
LED flash, HDR, panorama
Front Camera
8 MP, f/2.0, 1/4.0", 1.12µm
12 MP, f/2.0, (wide), 1/2.8", 1.28µm
Front Camera Features
LED flash
N/A
Video Recording
4K@30fps, 1080p@60/120fps, 1080p@30fps (gyro-EIS), 720p@240fps
1080p@30fps
Selfie Video
1080p@30fps
1080p@30fps
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
3100 mAh
3200 mAh
Battery Details
Li-Ion 3100 mAh, non-removable
Li-Ion 3200 mAh, non-removable
Charging Details
18W wired, QC4
18W wired
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
150.7 x 72.3 x 8.4 mm (5.93 x 2.85 x 0.33 in)
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)
Weight
168 g
156.2 g
Materials
Glass front (Gorilla Glass), glass back, aluminum frame
Glass front (Gorilla Glass 3), aluminum back, aluminum frame
Colors
Midnight Black, Glaze White, Deep Silver
Black, Ruby Red
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Nano-SIM + Nano-SIM
Nano-SIM + Nano-SIM
Network
GSM / HSPA / LTE
GSM / CDMA / HSPA / LTE
Network Speed
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 b/g/n/ac, dual-band, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
5.0, A2DP, LE, aptX
5.0, A2DP, LE
NFC
✓
✗
USB
USB Type-C 2.0, OTG
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS, GALILEO
GPS, GLONASS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 8.1 (Oreo), Android One
Android 8.1 (Oreo), Funtouch 4
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (under display, optical), accelerometer, proximity, compass

