BLU Vivo Air
#3643
vivo X21i
#3311Category Breakdown
BLU Vivo Air
vivo X21i
Performance
60.362.5
Camera
42.142.4
Display
79.579.5
Battery
43.543.5
Build
70.870.8
Overall
58.158.8
Summary
- The BLU Vivo Air features a compact 4.8-inch AMOLED display with a resolution of 720 x 1280 pixels, while the vivo X21i boasts a larger 6.28-inch Super AMOLED display with a higher resolution of 1080 x 2280 pixels, resulting in better clarity and detail.
- In terms of performance, the Vivo Air is powered by a Mediatek MT6592 chipset with 1GB RAM, which is less capable compared to the vivo X21i's Mediatek MT6771 Helio P60 with 6GB RAM, offering superior multitasking and processing power.
- The camera on the Vivo Air includes an 8 MP rear sensor and a 5 MP front camera, whereas the vivo X21i features a more advanced 12 MP dual-camera setup and a 24 MP selfie camera, enhancing photography options.
- The battery capacity of the Vivo Air is 2100 mAh, significantly smaller than the 3425 mAh battery in the vivo X21i, which also supports faster 18W charging.
- Lastly, the Vivo Air runs on an older Android 4.4.2 (KitKat) OS, while the vivo X21i operates on Android 8.1 (Oreo) with Funtouch 4, providing a more modern software experience.
Side-by-side Specification Comparison
BLU Vivo Air
vivo X21i
General
Release Date
2015
2018
Announced
2015
2018
Description
N/A
N/A
Display
Size
4.8"
6.28"
Type
AMOLED
Super AMOLED
Resolution
720 x 1280 pixels, 16:9 ratio (~306 ppi density)
1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
PPI
720
1080
Refresh Rate
60Hz
60Hz
Peak Brightness
N/A
N/A
HDR Support
✗
✗
Protection
Corning Gorilla Glass 3
N/A
Performance
Chipset
Mediatek MT6592 (28 nm)
Mediatek MT6771 Helio P60 (12 nm)
CPU
Octa-core 1.7 GHz Cortex-A7
Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
GPU
Mali-450MP4
Mali-G72 MP3
Memory
16GB 1GB RAM
64GB 6GB RAM, 128GB 4GB RAM
Expandable Storage
✗
✗
Card Slot
No
microSDXC (uses shared SIM slot)
Camera
Main Camera
8 MP
12 MP
Main Camera Details
8 MP, AF
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF5 MP, f/2.4, (depth)
Front Camera
5 MP
24 MP
Front Camera Details
5 MP
24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm
Video Recording
1080p@30fps
1080p@30fps
Selfie Video
N/A
N/A
OIS
✗
✗
Night Mode
✗
✗
RAW Support
✗
✗
Battery
Capacity
2100 mAh
3425 mAh
Battery Details
Li-Ion 2100 mAh, non-removable
Li-Ion 3425 mAh, non-removable
Charging Details
N/A
18W wired
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Design
Dimensions
139.8 x 67.4 x 5.1 mm (5.50 x 2.65 x 0.20 in)
154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in)
Weight
97 g
159 g
Materials
N/A
N/A
Water Resistance
N/A
N/A
Colors
Black, White/Gold
Black, Aurora White, Ruby Red, Night Purple
Foldable
✗
✗
Connectivity
SIM
Micro-SIM
Nano-SIM + Nano-SIM
Network
GSM / HSPA
GSM / CDMA / HSPA / LTE
Network Speed
HSPA 21.1/5.76 Mbps
HSPA, LTE
5G
✗
✗
4G
✗
✓
WiFi
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
4.0, A2DP
5.0, A2DP, LE
NFC
✗
✗
USB
microUSB 2.0
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS
GPS, GLONASS
Software
Operating System
Android 4.4.2 (KitKat)
Android 8.1 (Oreo), Funtouch 4
OS Version
Android 4.4.2 (KitKat)
Android 8.1 (Oreo), Funtouch 4
Security
Fingerprint
✗
✓
Face Unlock
✗
✗
Sensors
Accelerometer, gyro, proximity, compass
Fingerprint (rear-mounted), accelerometer, proximity, compass
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes