Haier G51 vs Oppo A1k

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 900, 2100; HSDPA 850, 1900

WCDMA 850, 900, 2100
4G network

LTE frequency band 1(2100), 3(1800), 7(2600), 8(900), 20(800); LTE frequency band 2(1900), 4(1700/2100), 5(850), 8(900)

LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 18(800), 28(700), 38(2600), 40(2300), 41(2500)
HSDPA speed

42.2 Mbps

-
HSUPA speed

11.5 Mbps

-
LTE speed

LTE, Cat4, 150 Mbps download, 50 Mbps upload

LTE Cat 4, 150.8 Mbps download, 51 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic

Plastic body
SIM

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

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

142.6 mm

154.5 mm
Width

72.9 mm

73.8 mm
Thickness

9.1 mm

8.4 mm
Weight

155 g

170 g
Colors

Black, Blue, Gold, White

Black, Red

Display
Display type

IPS LCD capacitive touchscreen

IPS capacitive touchscreen
Physical size

5.0 inches

6.1 inches
Resolution

480 x 854 pixels

720 x 1560 pixels
Pixel density

196 ppi

282 ppi
Display colors

16777216

16777216
Protection

Scratch-resistant glass

2.5D curved glass screen, scratch resistant, Corning Gorilla Glass 3
Multitouch

Yes, max 2 fingers

Yes

Main camera
Camera type

-

Single
Main camera

5 MP, f/2.0

8 MP, f/2.2 , 1/3.2" , 1.4 µm
Primary camera resolution

2592 x 1944 pixels

3264 x 2448 pixels
Primary camera video

720p@30fps

1080p@30fps
Primary camera Autofocus

autofocus

-
Primary camera flash

dual-LED dual-tone flash

LED flash
Camera features

Geo-tagging, HDR, face detection, panorama, touch focus

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

Features
Messaging SMS

SMS(threaded view)

-
Messaging MMS

MMS

-
Messaging Email

Email

-
Messaging IM

IM

-
Messaging Push Mail

Push Mail

-
Sensors

Accelerometer, proximity

Accelerometer, proximity, light, compass, fingerprint