Lava Z91 vs Microsoft Surface Duo 2

Lava Z91

Microsoft Surface Duo 2

Network
2G network

GSM 900, 1800

GSM 850, 900, 1800, 1900
3G network

HSDPA 900, 2100

HSDPA 850, 900, 1900, 2100
4G network

LTE frequency band 1(2100), 3(1800), 5(850), 40(2300), 41(2500)

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, 50 Mbps upload

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

-

6 Gbps download
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic, metal

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

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

Nano-SIM, eSIM
Height

152 mm

145.2 mm
Width

72.9 mm

93.1 mm
Thickness

7.7 mm

11 mm
Height unfolded

-

184.5 mm
Width unfolded

-

145.2 mm
Thickness unfolded

-

5.5 mm
Weight

147 g

284 g
Stylus

-

Yes
Colors

Blue

Glacier, Obsidian

Main camera
Camera type

-

Triple
Main camera

13 MP, f/2.0 , 1.12 µm

12 MP, f/1.7 , 1.4 µm, (wide) , 27 mm
(telephoto) , 12 MP, f/2.4 , 51 mm, 1.0 µm, 2x optical zoom
(ultrawide) , 13 MP, f/2.2 , 1.0 µm
Primary camera resolution

4160 x 3120 pixels

-
Primary camera video

1080p@30fps

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

autofocus

-
Camera features

Geo-tagging, face detection, touch focus

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, 802.11ac

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

Yes

Dual-band
USB

microUSB 2.0

Type-C 3.2, DisplayPort
Bluetooth

v4.0

v5.1
Bluetooth A2DP

Yes

A2DP
bluetooth LE

-

LE
Bluetooth AptX

-

aptX Adaptive
GPS

Yes, with A-GPS

Yes, with A-GPS

Features
Messaging SMS

SMS(threaded view)

-
Messaging MMS

MMS

-
Messaging Email

Email

-
Messaging IM

IM

-
Sensors

Fingerprint (rear-mounted), accelerometer, proximity

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