Digma Optima Prime 4 3G vs Oppo A91

Digma Optima Prime 4 3G

Oppo A91

Network
2G network

GSM 900, 1800

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

HSDPA 1900

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

-

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

-

42.2 Mbps
HSUPA speed

-

11.5 Mbps
LTE speed

-

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic

Aluminium alloy, glass
SIM

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

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

107.8 mm

160.2 mm
Width

188 mm

73.3 mm
Thickness

10 mm

7.9 mm
Weight

270 g

172 g
Colors

Black

Dark blue, Blue, Red

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
WLAN WiFi Direct

-

Yes
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

-

Yes
USB

microUSB 2.0

Type-C 1.0 reversible connector
USB On-The-Go

-

Yes
Bluetooth

v4.0

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

-

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

-

Yes
Beidou

-

Yes

Features
Sensors

Accelerometer

Accelerometer, compass, fingerprint, gyroscope, proximity, light

Main camera
Camera type

-

Quad
Main camera

48 MP, f/1.8 , 26 mm, 1/2.0" , 0.8 µm
8 MP, f/2.2 , 13 mm, 1/4.0" , 1.12 µm
2 MP, f/2.4 , 1/5" , 1.75 µm
2 MP, f/2.4 , 1/5" , 1.75 µm
Primary camera resolution

-

8000 x 6000 pixels
Primary camera video

-

2160p@30fps
Primary camera flash

-

LED flash
Camera features

-

Autofocus, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro mode, phase detection autofocus