BLU Vivo XI+ vs Oppo A1k

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 1700(AWS), 1900, 2100

WCDMA 850, 900, 2100
4G network

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 28(700), 66(1700/2100)

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 Mbps

-
LTE speed

LTE, Cat6, 301 Mbps download, 51 Mbps upload

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

Yes

Yes
EDGE

Yes

Yes

Design
Build

Aluminium alloy, plastic

Plastic body
SIM

Dual SIM (Micro-SIM/Nano-SIM(microSD), dual stand-by)

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

155 mm

154.5 mm
Width

75.5 mm

73.8 mm
Thickness

7.8 mm

8.4 mm
Weight

199 g

170 g
Colors

Black, Silver

Black, Red

Display
Display type

IPS capacitive touchscreen

IPS capacitive touchscreen
Physical size

6.2 inches

6.1 inches
Resolution

1080 x 2246 pixels

720 x 1560 pixels
Pixel density

402 ppi

282 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 3

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

Yes

Yes

Main camera
Camera type

Dual

Single
Main camera

16 MP, f/2.0 , 1/3" , 1.10 µm

8 MP, f/2.2 , 1/3.2" , 1.4 µm
5 MP, 1/5" , 1.12 µm
Primary camera resolution

4608 x 3456 pixels

3264 x 2448 pixels
Primary camera video

1080p@30fps

1080p@30fps
Primary camera flash

LED flash

LED flash
Primary camera phase detection autofocus

phase detection autofocus

-
Camera features

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

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

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz

Wi-Fi 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

v4.1

v4.2
Bluetooth A2DP

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

-

Yes
Beidou

-

Yes