Nokia X20 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, 2, 3, 4, 5, 7, 8, 12, 20, 28, 66, 38, 39, 40, 41

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

5G band 1, 2, 3, 5, 7, 28, 38, 41, 66, 78 SA/NSA/Sub6

-
HSDPA speed

42.2 Mbps

-
HSUPA speed

5.76 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

Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)

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

168.9 mm

154.5 mm
Width

79.7 mm

73.8 mm
Thickness

9.1 mm

8.4 mm
Weight

220 g

170 g
Waterproof

IPX2

-
Dust proof

IPX2

-
Colors

Blue, Sun

Black, Red

Display
Display type

IPS LCD

IPS capacitive touchscreen
Physical size

6.67 inches

6.1 inches
Resolution

1080 x 2400 pixels

720 x 1560 pixels
Pixel density

395 ppi

282 ppi
Display colors

16777216

16777216
Protection

Corning Gorilla Glass 5

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

-

Yes

Main camera
Camera type

Quad

Single
Main camera

(wide) , 64 MP, f/1.8 , 1/1.97" , 0.7 µm

8 MP, f/2.2 , 1/3.2" , 1.4 µm
(ultrawide) , 5 MP, 1/5" , 1.12 µm
(macro) , 2 MP
(depth) , 2 MP
Primary camera resolution

9280 x 6920 pixels

3264 x 2448 pixels
Primary camera video

4K@30fps, 1080p@30fps

1080p@30fps
Primary camera optics

Zeiss optics

-
Primary camera flash

LED flash

LED flash
Camera features

Autofocus, geotagging, panorama, HDR, touch focus, 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, 802.11ac

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

Yes

Yes
WLAN WiFi Direct

Wi-Fi direct

-
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

Yes

-
USB

Type-C 2.0

microUSB 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v4.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

-
Bluetooth AptX

aptX HD

-
NFC

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

-
Beidou

-

Yes