Category Breakdown
BLU Energy X LTE
Cat S31
Performance
54.354.3
Camera
42.142.1
Display
70.567.5
Battery
58.558.5
Build
68.868.8
Overall
56.656.0
Summary
- The BLU Energy X LTE features a 5.0-inch IPS LCD display with a resolution of 720 x 1280 pixels, while the Cat S31 has a smaller 4.7-inch TFT display with the same resolution but a higher pixel density of ~312 ppi.
- In terms of performance, both phones are equipped with 16GB of storage and 1GB of RAM for the BLU and 2GB for the Cat, but the BLU uses a Mediatek MT6735 chipset compared to the Qualcomm Snapdragon 210 in the Cat S31.
- Both devices have an 8 MP rear camera, but the BLU can record video at 1080p, whereas the Cat S31 is limited to 720p.
- Both phones are powered by a 4000 mAh battery, but the Cat S31 is heavier at 200g compared to the BLU's 183g.
- The BLU runs on Android 5.1, while the Cat S31 offers a more recent Android 7.0 experience.
Side-by-side Specification Comparison
BLU Energy X LTE
Cat S31
General
Release Date
2016
2017
Announced
2016
2017
Description
N/A
N/A
Display
Size
5"
4.7"
Type
IPS LCD
TFT
Resolution
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
720 x 1280 pixels, 16:9 ratio (~312 ppi density)
PPI
720
720
Refresh Rate
60Hz
60Hz
Peak Brightness
N/A
N/A
HDR Support
✗
✗
Protection
N/A
Corning Gorilla Glass 3
Performance
Chipset
Mediatek MT6735 (28 nm)
Qualcomm MSM8909 Snapdragon 210 (28 nm)
CPU
Quad-core 1.3 GHz Cortex-A53
Quad-core 1.3 GHz Cortex-A7
GPU
Mali-T720
Adreno 304
Memory
16GB 1GB RAM
16GB 2GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC
microSDXC (dedicated slot)
Camera
Main Camera
8 MP
8 MP
Main Camera Details
8 MP, f/2.4, 1/4.0", AF
8 MP, AF
Front Camera
5 MP
2 MP
Front Camera Details
5 MP
2 MP
Video Recording
1080p@30fps
720p@30fps
Selfie Video
N/A
N/A
OIS
✗
✗
Night Mode
✗
✗
RAW Support
✗
✗
Battery
Capacity
4000 mAh
4000 mAh
Battery Details
Li-Po 4000 mAh, non-removable
Li-Ion 4000 mAh, non-removable
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Design
Dimensions
143 x 69.9 x 8.5 mm (5.63 x 2.75 x 0.33 in)
146 x 74.4 x 12.6 mm (5.75 x 2.93 x 0.50 in)
Weight
183 g
200 g
Materials
N/A
N/A
Water Resistance
N/A
N/A
Colors
Gold, Grey
Black
Foldable
✗
✗
Connectivity
SIM
Dual SIM
Nano-SIMNano-SIM + Nano-SIM
Network
GSM / HSPA / LTE
GSM / HSPA / LTE
Network Speed
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Wi-Fi 802.11 b/g/n
Bluetooth
4.0, A2DP
4.1, A2DP, LE
NFC
✗
✗
USB
microUSB 2.0
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS
GPS, GLONASS, BDS
Software
Operating System
Android 5.1 (Lollipop)
Android 7.0 (Nougat)
OS Version
Android 5.1 (Lollipop)
Android 7.0 (Nougat)
Security
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
Accelerometer, proximity, compass
Accelerometer, proximity, compass
Audio
Stereo Speakers
✓
✗
Loudspeaker
Yes, with stereo speakers
Yes
Audio Jack
Yes
Yes

