Oppo Ace2 vs Xiaomi Black Shark Helo

Oppo Ace2

Xiaomi Black Shark Helo

Network
2G network

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

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

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DO

HSDPA 850, 900, 1900, 2100; CDMA2000 1xEV-DO
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 34, 38, 39, 40, 41 - China

LTE frequency band 1(2100), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
5G network

5G band 1, 3, 41, 78, 79 SA/NSA - China

-
HSDPA speed

42.2 Mbps

-
HSUPA speed

5.76 Mbps

-
EV-DO speed

3.1 Mbps download, 1.8 Mbps upload

3.1 Mbps download, 1.8 Mbps upload
LTE speed

LTE Cat 20

LTE, Cat18, 1.2 Gbps download, 221 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame

Aluminium alloy
SIM

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

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

160 mm

160 mm
Width

75.4 mm

75.2 mm
Thickness

8.6 mm

8.7 mm
Weight

186 g

190 g
Colors

Grey, Purple, Silver

Black

Display
Display type

AMOLED capacitive touchscreen

AMOLED capacitive touchscreen
Physical size

6.55 inches

6.01 inches
Resolution

1080 x 2400 pixels

1080 x 2160 pixels
Pixel density

402 ppi

402 ppi
Display colors

16777216

16777216
Protection

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

Scratch resistant
Multitouch

-

Yes
Display features

500 nits typ. brightness, HDR10+, 90Hz refresh rate

-

Main camera
Camera type

Quad

Dual
Main camera

48 MP, f/1.7 , 26 mm, 1/2.0" , 0.8 µm

12 MP, f/1.8 , 1.25 µm
8 MP, f/2.2 , 13 mm, 1/4.0" , 1.12 µm

20 MP, f/1.8 , 1.0 µm
2 MP
2 MP
Primary camera resolution

8000 x 6000 pixels

4000 x 3000 pixels
Primary camera video

4K@30/60fps, 1080p@30/60/240fps; gyro-EIS

2160p@30fps, 1080p@30fps, 720p@120fps
Primary camera flash

LED flash

dual-LED flash
Primary camera phase detection autofocus

-

dual pixel 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, macro-mode, phase detection autofocus, contrast detection autofocus

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

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, 802.11n 5Ghz, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
Wi-Fi display

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 1.0 reversible connector

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

Yes

Yes
Bluetooth

v5.1

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
NFC

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

-
Beidou

Yes

Yes
QZSS

Yes

-