Digma Optima 7018N 4G vs vivo NEX A

Digma Optima 7018N 4G

vivo NEX A

Network
2G network

GSM 900, 1800

GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA
3G network

HSDPA 1900

HSDPA 850, 900, 1700(AWS), 1900, 2100
4G network

LTE frequency band 1(2100), 3(1800), 7(2600)

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
EV-DO speed

-

3.1 Mbps download, 1.8 Mbps upload
LTE speed

LTE, Cat4, 150 Mbps download, 51 Mbps upload

-
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic

Aluminium alloy, polycarbonate
SIM

Dual SIM (Micro-SIM/Mini-SIM, dual stand-by)

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

109 mm

162 mm
Width

190 mm

77 mm
Thickness

9.2 mm

7.98 mm
Weight

270 g

199 g
Colors

Black

Black, Red

Main camera
Camera type

-

Dual
Main camera

2 MP

12 MP, f/1.8 , 1/2.55" , 1.4 µm
5 MP, f/2.4
Primary camera resolution

1600 x 1200 pixels

4032 x 3024 pixels
Primary camera video

720p@30fps

2160p@30fps
Primary camera flash

-

dual-LED flash
Primary camera phase detection autofocus

-

phase detection autofocus
Camera features

Continuous shooting, digital zoom, geotagging, HDR, scene mode

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

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

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

Yes

Yes
WLAN WiFi Direct

-

Yes
WLAN WiFi Dual Band

-

Yes
USB

microUSB 2.0

Type-C reversible connector
USB On-The-Go

-

Yes
Bluetooth

v4.0

v5.0
Bluetooth A2DP

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

-

Yes
Beidou

-

Yes