vivo X21i
#3311
ZTE nubia My Prague
#3618Category Breakdown
vivo X21i
ZTE nubia My Prague
Performance
62.560.3
Camera
42.442.4
Display
79.579.5
Battery
43.543.5
Build
70.870.8
Overall
58.858.2
Summary
- The vivo X21i features a larger 6.28-inch Super AMOLED display with a resolution of 1080 x 2280 pixels, compared to the ZTE nubia My Prague's 5.2-inch AMOLED display at 1080 x 1920 pixels, offering a higher pixel density.
- In terms of performance, the X21i is powered by the Mediatek Helio P60 chipset with 6GB of RAM, while the My Prague uses the older Snapdragon 615 with only 2GB or 3GB of RAM, resulting in better multitasking capabilities for the X21i.
- The camera system on the X21i includes a 12 MP rear camera and a 24 MP front camera, surpassing the My Prague's 13 MP rear and 8 MP front cameras.
- Battery capacity is also notably higher in the X21i at 3425 mAh versus the My Prague's 2200 mAh, providing longer usage time.
- Both devices run different versions of Android, with the X21i operating on Android 8.1 and the My Prague on the older Android 5.2, indicating a more modern software experience on the X21i.
Side-by-side Specification Comparison
vivo X21i
ZTE nubia My Prague
General
Release Date
2018
2015
Announced
2018
2015
Description
N/A
N/A
Display
Size
6.28"
5.2"
Type
Super AMOLED
AMOLED
Resolution
1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
1080 x 1920 pixels, 16:9 ratio (~424 ppi density)
PPI
1080
1080
Refresh Rate
60Hz
60Hz
Peak Brightness
N/A
N/A
HDR Support
✗
✗
Protection
N/A
N/A
Performance
Chipset
Mediatek MT6771 Helio P60 (12 nm)
Qualcomm MSM8939 Snapdragon 615 (28 nm)
CPU
Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
GPU
Mali-G72 MP3
Adreno 405
Memory
64GB 6GB RAM, 128GB 4GB RAM
16GB 2GB RAM, 32GB 3GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (uses shared SIM slot)
microSDXC (uses shared SIM slot)
Camera
Main Camera
12 MP
13 MP
Main Camera Details
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF5 MP, f/2.4, (depth)
13 MP, AF
Front Camera
24 MP
8 MP
Front Camera Details
24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm
8 MP
Video Recording
1080p@30fps
1080p@30fps
Selfie Video
N/A
1080p@30fps
OIS
✗
✗
Night Mode
✗
✗
RAW Support
✗
✗
Battery
Capacity
3425 mAh
2200 mAh
Battery Details
Li-Ion 3425 mAh, non-removable
Li-Ion 2200 mAh, non-removable
Charging Details
18W wired
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Design
Dimensions
154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in)
148 x 72 x 5.5 mm (5.83 x 2.83 x 0.22 in)
Weight
159 g
140 g
Materials
N/A
N/A
Water Resistance
N/A
N/A
Colors
Black, Aurora White, Ruby Red, Night Purple
White/Silver, White/Gold
Foldable
✗
✗
Connectivity
SIM
Nano-SIM + Nano-SIM
Nano-SIM + Micro-SIM
Network
GSM / CDMA / HSPA / LTE
GSM / HSPA / LTE
Network Speed
HSPA, LTE
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, hotspot
Bluetooth
5.0, A2DP, LE
4.0, A2DP
NFC
✗
✗
USB
microUSB 2.0, OTG
microUSB 2.0
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS
GPS, GLONASS
Software
Operating System
Android 8.1 (Oreo), Funtouch 4
Android 5.2 (Lollipop), nubia UI 3
OS Version
Android 8.1 (Oreo), Funtouch 4
Android 5.2 (Lollipop), nubia UI 3
Security
Fingerprint
✓
✗
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, proximity, compass
Accelerometer, proximity, compass
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes