Oppo K3 vs UMIDIGI C2

Network
2G network

GSM 850, 900, 1800, 1900, CDMA 800

GSM 850, 900, 1800, 1900
3G network

HSDPA 800, 850, 900, 1700/2100, 1900, 2100, TD-SCDMA 1880-1920, 2010-2025

HSDPA 900, 2100
4G network

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 8(900), 12(700), 17(700), 18(800), 19(800), 26(850), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)

LTE frequency band 1(2100), 3(1800), 7(2600), 18(800)
EV-DO speed

3.1 Mbps download, 1.8 Mbps upload

-
LTE speed

LTE Cat 15, 798.0 Mbps download, 226.0 Mbps upload

LTE, Cat4, 150 Mbps download, 51 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic

Aluminium alloy
SIM

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

Dual SIM (Nano-SIM/Nano-SIM(microSD))
Height

161.2 mm

142.6 mm
Width

76 mm

69.25 mm
Thickness

9.4 mm

9.5 mm
Weight

191 g

148 g
Colors

Green, White, Purple

Black

Display
Display type

AMOLED capacitive touchscreen

IGZO
Physical size

6.5 inches

5 inches
Resolution

1080 x 2340 pixels

1080 x 1920 pixels
Pixel density

396 ppi

441 ppi
Display colors

16777216

16777216
Protection

2.5D curved glass screen, Scratch resistant, Corning Gorilla Glass 5

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 4
Multitouch

Yes

Yes

Main camera
Camera type

Dual

-
Main camera

16 MP, f/1.7 , 1/2.5" , 1.12 µm

13 MP, 1.127 µm
2 MP, f/2.4
Primary camera resolution

4608 x 3456 pixels

4160 x 3120 pixels
Primary camera video

2160@30fps, 1080@120fps, 720@240fps

1080p@30fps
Primary camera flash

dual LED flash

LED flash
Primary camera phase detection autofocus

-

phase detection autofocus
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, phase detection, contrast autofocus

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

Connectivity
WLAN

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

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

Yes

Yes
WLAN WiFi Direct

Yes

-
Wi-Fi display

Yes

-
WLAN WiFi Dual Band

Yes

-
USB

Type-C reversible connector

microUSB 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v4.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

-
Bluetooth EDR

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

-
GALILEO

Yes

-
Beidou

Yes

-

Features
Sensors

Accelerometer, compass, proximity, light, gyroscope, in-display fingerprint sensor

Accelerometer, compass, fingerprint, gyroscope, hall, light, proximity