BLU G8 vs Cat S31

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 1700(AWS), 1900, 2100

HSDPA 850, 900, 1900, 2100 - EU; HSDPA 850, 900, 1700(AWS), 1900, 2100 - USA
4G network

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 12(700), 17(700), 28(700)

LTE frequency band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800) - EU; LTE frequency band 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 12(700), 17(700) - USA
HSDPA speed

42.2 Mbps

-
HSUPA speed

11.5 Mbps

-
LTE speed

LTE Cat 4, 150 Mbps download, 50 Mbps upload

LTE, Cat4, 150 Mbps download, 50 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic

-
SIM

Dual SIM (Nano-SIM, dual stand-by)

Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
Height

161.4 mm

146 mm
Width

78 mm

74.4 mm
Thickness

9.6 mm

12.6 mm
Weight

181 g

200 g
Waterproof

-

IP68, 1.2 m and 35 minutes
Dust proof

-

IP68
MIL-STD-810G

-

Yes - dust, humidity, rain, salt, vibration, solar radiation, transport and thermal shock resistant
Colors

Black, Blue, Red

Black

Main camera
Camera type

Dual

-
Main camera

13 MP

8 MP
2 MP
Primary camera resolution

4160 x 3120 pixels

-
Primary camera video

1080p@30fps

720p@30fps
Primary camera Autofocus

-

autofocus
Primary camera flash

LED flash

LED flash
Camera features

Autofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection

Geo-tagging, face detection, touch focus

Features
Messaging SMS

-

SMS(threaded view)
Messaging MMS

-

MMS
Messaging Email

-

Email
Messaging IM

-

IM
Messaging Push Email

-

Push Email
Java

-

No
Sensors

Accelerometer, fingerprint, proximity, light

Accelerometer, compass, proximity