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Model

Compare Energizer E3 and Oppo F21 Pro

Energizer E3 vs Oppo F21 Pro

Energizer E3

Oppo F21 Pro

Energizer E3

Oppo F21 Pro

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

-

HSDPA 850, 900, 2100
4G network

-

LTE frequency band 1, 3, 5, 8, 38, 40, 41
HSDPA speed

-

42.2 Mbps
HSUPA speed

-

5.76 Mbps
LTE speed

-

LTE-A, 391 Mbps download, 150 Mbps upload
GPRS

Yes

Yes
EDGE

No

Yes

Availability
Oficially announced

2021-04

2022-04
Status

2021-04

2022-04

Design
Build

-

Aluminium alloy, glass
SIM

Dual SIM (Mini-SIM)

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

113.9 mm

159.9 mm
Width

48 mm

73.2 mm
Thickness

14 mm

7.5 mm
Weight

70 g

175 g
Waterproof

-

IPX4
Dust proof

-

IPX4
Flashlight

Yes

-
Build features

-

RGB ring light around the camera (notifications, charging progress)
Colors

Black, Blue, Brown, Gray, Green, White, Yellow

Black, Orange

Display
Display type

TFT

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

262144

16777216
Protection

-

Corning Gorilla Glass 5
Display features

-

90Hz, 430 nits (typ), 600 nits (HBM), 800 nits (peak)

Hardware
CPU

-

Octa-core
CPU

Quad-core 2.4 GHz Kryo 265 Gold
CPU(second)

quad-core 1.9 GHz Kryo 265 Silver
Chipset

Spreadtrum SC6531E

Qualcomm SM6225 Snapdragon 680 4G
GPU

-

Adreno 610
Memory RAM

-

8 GB
Internal storage

-

128 GB
Memory card

microSD

microSD, microSDHC, microSDXC
Storage

-

UFS 2.2
Phonebook

Yes

-
Call records

Yes

-

Main camera
Camera type

Single

Triple
Main camera

(wide) , 64 MP, f/1.7 , 79˚ , 26 mm, 1/2.0" , 0.7 µm
(microscope) , 2 MP, f/3.3 , 65˚
89˚ , (depth) , 2 MP, f/2.4 , 1.75 µm
Primary camera resolution

-

9280 x 6920 pixels
Primary camera video

Yes

1080p@30fps, gyro-EIS
Primary camera flash

-

LED flash
Camera features

-

Autofocus, continuous 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

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 32 MP, f/2.4 , 24 mm, 1/2.74" , 0.7 µm
Selfie camera features

-

Face unlock, HDR
Selfie camera video

-

1080p@30fps, gyro-EIS

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

v2.1

v5.1
Bluetooth A2DP

-

Yes
bluetooth LE

-

Yes
Bluetooth AptX

-

aptX HD
NFC

No

Yes
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

4500 mAh
Battery removable

-

Non-removable
Fast battery charging

-

SuperVOOC, 33W (100% in 60 min)
Reverse charging

-

Yes

Cost
Price

10 USD

310 USD

OS
OS

-

Android 12, ColorOS 12.1

Browser
HTML

-

HTML5

Tests and performance
Antutu

-

220000 (v9)
Geekbench(single-core)

-

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

-

1488 (v5.2)

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