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Model

Compare Lava Z91 and Microsoft Surface Duo

Lava Z91 vs Microsoft Surface Duo

Lava Z91

Microsoft Surface Duo

Microsoft Surface Duo

Lava Z91

Microsoft Surface Duo

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, 46, 66
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 (CA) Cat18, 1200 Mbps download, 100 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Availability
Oficially announced

2018-3

2020-08
Status

2018-3

2020-08

Design
Build

Plastic, metal

Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5)
SIM

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

Nano-SIM, eSIM
Height

152 mm

145.2 mm
Width

72.9 mm

93.3 mm
Thickness

7.7 mm

9.9 mm
Height unfolded

-

186.9 mm
Width unfolded

-

145.2 mm
Thickness unfolded

-

4.8 mm
Weight

147 g

250 g
Stylus

-

Yes
Colors

Blue

White

Display
Display type

IPS LCD capacitive touchscreen

AMOLED capacitive touchscreen
Physical size

5.7 inches

8.1 inches
Resolution

720 x 1440 pixels

1800 x 2700 pixels
Pixel density

282 ppi

401 ppi
Display colors

16777216

16777216
Protection

2.5D curved glass screen

Corning Gorilla Glass 5
Multitouch

Yes, max 5 fingers

-
Cover display

-

AMOLED capacitive touchscreen
Cover display physical size

-

5.6 inches
Cover display resolution

-

1350 x 1800 pixels

Hardware
CPU

-

Octa-core
CPU

Quad-core 1.3 GHz ARM Cortex-A53

Single-core 2.84 GHz Kryo 485
CPU(second)

Triple-core 2.42 GHz Kryo 485
CPU(third)

Quad-core 1.78 GHz Kryo 485
Chipset

Mediatek MT6739

Qualcomm SM8150 Snapdragon 855
GPU

PowerVR GE8100

Adreno 640
Memory RAM

3 GB

6 GB
Internal storage

32 GB

128, 256 GB
Memory card

microSD

No
Memory card max

128 GB

-
Storage

-

UFS 3.0

OS
OS

Android 7.1 (Nougat)

Android 10

Main camera
Camera type

-

Single
Main camera

13 MP, f/2.0 , 1.12 µm

11 MP, f/2.0 , 1.0 µm, 23 mm
Primary camera resolution

4160 x 3120 pixels

-
Primary camera video

1080p@30fps

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

autofocus

-
Camera features

Geo-tagging, face detection, touch focus

-

Selfie camera
Flash

LED flash

-
Selfie camera

8 MP, f/2.2
Selfie camera resolution

3264 x 2448 pixels

-
Selfie camera video

-

4K@30/60fps, 1080p@30/60fps, gyro-EIS

Sound
3.5mm jack

Yes

-
Loudspeaker

Yes

Yes, with stereo speakers
Notifications

Vibration; MP3, WAV ringtones

-
Earpiece

Yes

-

Multimedia
Radio

-

No
Radio FM

FM radio

-

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
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

microUSB 2.0

Type-C reversible connector
Bluetooth

v4.0

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

-

Yes
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

Accelerometer, fingerprint, proximity

Browser
HTML

Yes

HTML5

Battery
Battery type

Li-Po

Li-Po
Battery capacity

3000 mAh

3577 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

-

Yes

Cost
Price

-

1400 USD

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