Category Breakdown
verykool sl5029 Bolt Pro LTE
Yezz Billy 4
Performance
46.439.1
Camera
27.915.4
Display
16.916.9
Battery
18.913.1
Build
0.20.2
Connectivity
45.437.6
Audio
8.98.9
Overall
21.115.6
Summary
- The verykool sl5029 Bolt Pro LTE features a larger 5.0-inch TFT display with a resolution of 480 x 854 pixels, compared to the Yezz Billy 4's 4.0-inch display at 480 x 800 pixels, offering a slightly lower pixel density.
- In terms of performance, the Bolt Pro LTE is powered by a Mediatek MT6737 chipset with 1.25 GHz quad-core processing and 1GB of RAM, while the Yezz Billy 4 uses a Qualcomm Snapdragon 200 with a 1.2 GHz quad-core and only 512MB of RAM, resulting in better multitasking on the Bolt Pro LTE.
- Both phones have an 8 MP rear camera, but the Bolt Pro LTE can record video at 1080p, whereas the Yezz Billy 4 is limited to 720p.
- The Bolt Pro LTE has a 2000 mAh battery, significantly larger than the 1300 mAh battery in the Yezz Billy 4, which may provide better longevity.
- Lastly, the Bolt Pro LTE runs on Android 7.0 Nougat, offering a more modern software experience compared to the Yezz Billy 4's Windows Phone 8.1.
Side-by-side Specification Comparison
verykool sl5029 Bolt Pro LTE
Yezz Billy 4
General
Release Date
2017
2014
Announced
2017
2014
Description
N/A
N/A
Display
Size
5"
4"
Type
TFT
TFT
Resolution
480 x 854 pixels, 16:9 ratio (~196 ppi density)
480 x 800 pixels, 5:3 ratio (~233 ppi density)
PPI
480
480
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
Scratch-resistant glass
N/A
Performance
Chipset
Mediatek MT6737 (28 nm)
Qualcomm MSM8212 Snapdragon 200 (28 nm)
CPU
Quad-core 1.25 GHz Cortex-A53
Quad-core 1.2 GHz Cortex-A7
GPU
Mali-T720
Adreno 302
Memory
8GB 1GB RAM
4GB 512MB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC
microSDXC (dedicated slot)
Camera
Main Camera
8 MP, AF
8 MP, AF
Main Camera Features
LED flash, panorama
LED flash
Front Camera
5 MP
1.3 MP
Front Camera Features
LED flash
N/A
Video Recording
1080p@30fps
720p@30fps
Selfie Video
N/A
N/A
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
2000 mAh
1300 mAh
Battery Details
Li-Ion 2000 mAh battery
Li-Ion 1300 mAh, removable
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
144.8 x 72 x 9.6 mm (5.70 x 2.83 x 0.38 in)
122.5 x 64.4 x 9.9 mm (4.82 x 2.54 x 0.39 in)
Weight
142 g
109 g
Materials
N/A
N/A
Colors
Black, Gold, Silver
White, Black, Red, Gun Metal, Blue, Yellow, Champing Gold
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Nano-SIM + Nano-SIM
Dual SIM (Micro-SIM)
Network
GSM / HSPA / LTE
GSM / HSPA
Network Speed
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
HSPA 42.2/5.76 Mbps
5G
✗
✗
4G
✓
✗
WiFi
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n, dual-band, hotspot
Bluetooth
4.0, A2DP, LE
4.0, A2DP
NFC
✗
✗
USB
microUSB 2.0
microUSB 2.0
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS
GPS, GLONASS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 7.0 (Nougat)
Microsoft Windows Phone 8.1
Fingerprint
✓
✗
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer
Accelerometer, proximity

