BLU G91 Max vs Microsoft Surface Duo 2

BLU G91 Max

Microsoft Surface Duo 2

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 1700(AWS), 1900, 2100

HSDPA 850, 900, 1900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 28, 38

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 42, 46, 48, 66, 71
5G network

-

5G band 1, 2, 3, 5, 7, 20, 25, 28, 38, 41, 66, 71, 77, 78, 79 SA/NSA/Sub6 - global; 1, 2, 3, 5, 7, 20, 25, 28, 38, 41, 66, 71, 77, 78, 79, 257, 260, 261 SA/NSA/Sub6/mmWave - USA
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE, Cat4, 150 Mbps download, 51 Mbps upload

LTE-A (5CA) Cat20, 2000 Mbps download, 150 Mbps upload
5G speed

-

6 Gbps download
GPRS

No

Yes
EDGE

Yes

Yes

Design
Build

Plastic, glass

Glass front (Gorilla Glass Victus), glass back (Gorilla Glass)
SIM

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

Nano-SIM, eSIM
Height

168.6 mm

145.2 mm
Width

77 mm

93.1 mm
Thickness

8.9 mm

11 mm
Height unfolded

-

184.5 mm
Width unfolded

-

145.2 mm
Thickness unfolded

-

5.5 mm
Weight

213 g

284 g
Stylus

-

Yes
Colors

Gray, Sky Blue

Glacier, Obsidian

Main camera
Camera type

Quad

Triple
Main camera

(wide) , 108 MP, f/1.8 , 1/1.52" , 0.7 µm, 30x digital zoom

(wide) , 12 MP, f/1.7 , 1.4 µm, 27 mm
(ultrawide) , 5 MP, f/2.2 , 115˚

(telephoto) , 12 MP, f/2.4 , 51 mm, 1.0 µm, 2x optical zoom
(macro) , 2 MP, f/2.4

(ultrawide) , 13 MP, f/2.2 , 1.0 µm
(depth) , 2 MP, f/2.4
Primary camera resolution

12000 x 9000 pixels

-
Primary camera video

4K@30fps, 1080p@30fps

4K@30/60fps, 1080p@30/60/120/240fps, gyro-EIS, HDR
Primary camera flash

LED flash

-
Camera features

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

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

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax
WLAN WiFi Hotspot

Yes

Wi-Fi hotspot
WLAN WiFi Direct

Yes

Wi-Fi direct
WLAN WiFi Dual Band

-

Dual-band
USB

Type-C 2.0

Type-C 3.2, DisplayPort
USB On-The-Go

Yes

-
Bluetooth

v4.1

v5.1
Bluetooth A2DP

Yes

A2DP
bluetooth LE

LE

LE
Bluetooth AptX

-

aptX Adaptive
NFC

No

-
GPS

Yes, with A-GPS

Yes, with A-GPS

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity

Dual accelerometer, dual compass, fingerprint, dual gyroscope, dual proximity