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Model

Compare Energizer E4 and Oppo K9

Energizer E4 vs Oppo K9

Energizer E4

Oppo K9

Energizer E4

Oppo K9

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800
3G network

-

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
4G network

-

LTE frequency band 1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41
5G network

-

5G band 1, 3, 28, 41, 77, 78 SA/NSA
HSDPA speed

-

42.2 Mbps
HSUPA speed

-

5.76 Mbps
LTE speed

-

LTE-A, 1200 Mbps download, 210 Mbps upload
GPRS

Yes

Yes
EDGE

No

Yes

Availability
Oficially announced

2022-06

2021-05
Status

2022-08

2021-05

Design
Build

-

Aluminium alloy, glass
SIM

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

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

115 mm

159.1 mm
Width

46 mm

73.4 mm
Thickness

13.5 mm

7.9 mm
Weight

65 g

172 g
Colors

Black, Blue, Gold, Red, Silver

Aurora, Black

Display
Display type

TFT

Super AMOLED
Physical size

1.77 inches

6.43 inches
Resolution

128 x 160 pixels

1080 x 2400 pixels
Pixel density

116 ppi

409 ppi
Display colors

-

16777216
Protection

-

Scratch resistant, 2.5D curved glass screen
Display features

-

90Hz, 430 nits (typ), 750 nits (peak)

Hardware
CPU

-

Octa-core
CPU

312 MHz

2.8 GHz Single-core Kryo 475 Prime
CPU(second)

Single-core 2.4 GHz Kryo 475 Gold
CPU(third)

Hexa-core 1.8 GHz Kryo 475 Silver
Chipset

Unisoc SC6531DA

Qualcomm SM7250-AC Snapdragon 768G 5G
GPU

-

Adreno 620
Memory RAM

-

8 GB
Internal storage

-

128, 256 GB
Memory card

microSDHC

No
Phonebook

Yes

-
Call records

Yes

-

Main camera
Camera type

Single

Triple
Main camera

(wide) , 64 MP, f/1.7 , 80˚ , 1/2.0" , 0.8 µm, 20x digital zoom
(ultrawide) , 8 MP, f/2.2 , 119˚
(macro) , 2 MP, f/2.4
Primary camera resolution

-

9280 x 6920 pixels
Primary camera video

Yes

4K@30fps, 1080p@30/60/120fps; gyro-EIS
Primary camera flash

-

LED flash
Camera features

-

Autofocus, continuous autofocus, continuous shooting, digital 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, macro-mode, phase detection autofocus, contrast detection autofocus

Sound
3.5mm jack

Yes

Yes
Loudspeaker

Yes

Yes
Earpiece

-

Yes

Multimedia
Radio

FM Radio

No

Connectivity
WLAN

No

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

-

Yes
WLAN WiFi Direct

-

Yes
WLAN WiFi Dual Band

-

Yes
USB

microUSB

Type-C 2.0
USB On-The-Go

-

Yes
Bluetooth

v2.0

v5.0
Bluetooth A2DP

-

Yes
bluetooth LE

-

Yes
Bluetooth AptX

-

aptX HD
NFC

No

No
GPS

No

Yes, with A-GPS
GLONASS

-

Yes
GALILEO

-

Yes
BDS

-

Yes
QZSS

-

Yes

Features
Messaging SMS

Yes

-
Java

No

-
Games

No

-
Sensors

-

Accelerometer, compass, fingerprint, gyroscope, proximity

Battery
Battery type

Li-Ion

Li-Po
Battery capacity

1000 mAh

4300 mAh
Battery removable

Removable

Non-removable
Fast battery charging

-

VOOC 4.0 (100% in 35 min)

Cost
Price

10 USD

310 USD

OS
OS

-

Android 11, ColorOS 11.1

Selfie camera
Selfie camera type

-

Single
Selfie camera

(wide) , 32 MP, f/2.4 , 80˚ , 0.8 µm
Selfie camera resolution

-

6560 x 4928 pixels
Selfie camera features

-

Face unlock, digital image stabilization
Selfie camera video

-

1080p@30fps

Browser
HTML

-

HTML5

Tests and performance
Antutu

-

449750 (v8)
Geekbench(single-core)

-

602 (v5.2)
Geekbench(multi-core)

-

1877 (v5.2)

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