OPPO A15 2GB RAM vs realme C21

Comparing the OPPO A15 2GB RAM vs realme C21 across performance, display, camera, battery, storage and user rating to help determine the better smartphone.

Here is the summary of the results:

Performance: Both OPPO A15 2GB RAM and realme C21 run at the same processing speed of 2.3 GHz.

Display: OPPO A15 2GB RAM offers a screen size of 6.52 inches, while realme C21 offers 6.5 inches, making OPPO A15 2GB RAM the larger display of the two. Both OPPO A15 2GB RAM and realme C21 feature the same IPS LCD display.

Rear Camera: Both OPPO A15 2GB RAM and realme C21 feature a 13 MP primary rear camera.

Front Camera: Both OPPO A15 2GB RAM and realme C21 feature a 5 MP primary front camera.

Battery: realme C21 offers a higher battery capacity with 5000 mAh, while OPPO A15 2GB RAM offers 4230 mAh, making realme C21 better for longer battery life.

Storage: Both OPPO A15 2GB RAM and realme C21 offer the same internal storage of 32 GB.

User Rating: realme C21 receives a higher user rating of 4.4, while OPPO A15 2GB RAM has a rating of 4.2.

OPPO A15 2GB RAM

₹10,999

(Discontinued)

realme C21

₹9,999

(Out of Stock)

Summary

Release Date

10 Nov, 2020

14 Apr, 2021

16 Jul, 2026

Performance

		N/A
MediaTek Helio P35	MediaTek Helio G35	Unisoc T7100
Tru-Octa Core (upto 2.3 GHz)	Tru-Octa Core (upto 2.3 GHz)	Octa Core (upto 1.8 GHz)
2 GB RAM	3 GB RAM	3 GB RAM

Display

		N/A
6.52 inches (16.56 cm)	6.5 inches (16.51 cm)	6.56 inches (16.66 cm)
IPS LCD	IPS LCD	IPS LCD
720x1600 px (HD+)	720x1600 px (HD+)	N/A
60 Hz Refresh Rate	60 Hz Refresh Rate	90 Hz Refresh Rate

Rear Camera

		N/A
13 MP Wide Angle Primary Camera	13 MP Wide Angle Primary Camera	8 MP Primary Camera
2 MP Depth Camera	2 MP Macro Camera	N/A
2 MP Macro Camera	2 MP Mono Camera	N/A

Front Camera

		N/A
5 MP	5 MP Wide Angle Lens	5 MP

Battery

		N/A
4230 mAh	5000 mAh	5000 mAh
N/A	N/A	10W
No Wireless Charging	No Wireless Charging	N/A

Storage

32 GB	32 GB	64 GB
eMMC 5.1	eMMC 5.1	eMMC 5.0

Expert Review

6.0/10

Read Expert Review

N/A

Pros

Good design
Decent shots in daylight cameras
Fast fingerprint sensor

Device yet to be reviewed

Device yet to be reviewed

Cons

Average performance
HD+ resolution sceen
Poot nighttime shots
Still uses a micro-USB port

Device yet to be reviewed

Device yet to be reviewed

User Ratings

4.2/5

(1,724 ratings)

4.4/5

(72,845 ratings)

N/A

Benchmarks (The higher, the better)

109,267 AnTuTu Score	131,494 AnTuTu Score	N/A
15h 30m Battery Life (PC Mark)	N/A	N/A

Compare Prices

Not Available in any store

₹8,599

@ Amazon

Video

1 Video

There are no videos available for the device.

User Feedback

General

Launch Date

N/A

Apr 14, 2021

(Official)

Jul 16, 2026

(Official)

Operating System

Android v10 (Q)

Android v15

Custom UI

ColorOS

Realme UI

Android Go

Performance

Performance Rating

Good

Avg

N/A

Chipset

MediaTek Helio P35

MediaTek Helio G35

Unisoc T7100

Processor

Octa core, 2.3 GHz, Cortex A53

Octa core

1.8 GHz, Quad core, Cortex A75 1.2 GHz, Quad core, Cortex A55

Architecture (The higher, the better)

64 bit

Fabrication (The lower, the better)

12 nm

Graphics (GPU)

PowerVR GE8320

PowerVR GE8322

RAM

3 GB / 2 GB

3 GB / 4 GB

RAM Type

LPDDR4X

Performance Test Results

AnTuTu Score (The higher, the better) AnTuTu benchmark measures overall performance of a phone by stress-testing CPU, GPU, RAM, etc.

109,267

131,494

N/A

Bootup Time (The lower, the better)

33.0 s

N/A

Gaming Test Results

Battery Drain* (The lower, the better)

2.0 %

N/A

Heating* (The lower, the better)

22.6 %

N/A

* after 30 mins of gaming

Display

Display Rating

Very Good

N/A

Display Type

IPS LCD

Screen Size

6.52 inches (16.56 cm)

6.5 inches (16.51 cm)

6.56 inches (16.66 cm)

Resolution

720x1600 px (HD+)

N/A

Brightness

480 nits

400 nits

Refresh Rate

60 Hz

90 Hz

Aspect Ratio

20:9

N/A

Pixel Density

269 ppi

270 ppi

269 ppi

Screen to Body Ratio (calculated)

83 %

80.82 %

N/A

Bezel-less Display

Yes with waterdrop notch

N/A

Screen to Body Ratio (claimed by the brand)

88.7 %

89.5 %

N/A

Design

Height

164 mm

165.2 mm

N/A

Width

75.4 mm

76.4 mm

N/A

Thickness

7.9 mm

8.9 mm

8.49 mm

Weight

175 grams

190 grams

N/A

Build Material

Back: Plastic

N/A

Rear Camera

Rear Camera Rating

Good

N/A

Resolution

13 MP
Primary Cameraf/2.2 Wide Angle1/3.1" sensor size 1.12µm pixel size

13 MP
Primary Camera4x Digital Zoomf/2.2 Wide Angle26 mm focal length 1/3" sensor size CMOS image sensor 1.12µm pixel size

8 MP
Primary Cameraf/2GC08A8 1.12µm pixel size

2 MP
f/2.4 Depth Camera

2 MP
f/2.4 Macro Camera1.75µm pixel size

N/A

2 MP
f/2.4 Macro Camera

2 MP
f/2.4 Mono Camera1.75µm pixel size

N/A

Autofocus

Yes

Yes Phase Detection Autofocus

N/A

OIS

N/A

Flash

Yes LED Flash

Image Resolution

4128 x 3096 Pixels

N/A

Settings

Exposure compensation ISO control

N/A

Shooting Modes

Continuous Shooting
High Dynamic Range mode (HDR)

N/A

Camera Features

Digital Zoom
Auto Flash
Face detection
Touch to focus

4 x Digital Zoom
Auto Flash
Face detection
Touch to focus

Digital Zoom

Video Recording

1920x1080 @ 30 fps

Full HD @30 fps

N/A

Front Camera

Front Camera Rating

Very Good

Good

N/A

Resolution

5 MP
f/2.4 Primary Camera

5 MP
f/2.2 Wide Angle Primary Camera1/5.0" sensor size 1.12µm pixel size

5 MP
Primary Camera1.12µm pixel size

Flash

N/A

Camera Features

N/A

Fixed Focus

N/A

Video Recording

N/A

Full HD @30 fps

N/A

Battery

Battery Rating

Very Good

N/A

Capacity

4230 mAh

5000 mAh

Battery Type

Li-Polymer

Li-ion

N/A

Quick Charging

N/A

Yes 10W

Battery Test Results

Battery Life (PC Mark) (The higher, the better) PCMark Battery benchmark measures battery life of a phone with various activities such as web browsing, photo editing, writing, video editing, etc.

15h 30m

N/A

Charging Time (20% to 100%) (The lower, the better)

2h 23m 44s

N/A

Storage

Internal Storage

32 GB

32 GB / 64 GB

64 GB

Storage Type

eMMC 5.1

eMMC 5.0

Expandable Storage

Yes Up to 256 GB

N/A

Network & Connectivity

SIM Slot(s)

Dual SIM

Single SIM

SIM Type

SIM1: Nano SIM2: Nano

N/A

Network Support

5G Not Supported 4G

VoLTE

Yes

SIM 1

4G Bands:

TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5)

4G Bands:

TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 850(band 5) / 800(band 20)

N/A

SIM 2

4G Bands:

TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5)

4G Bands:

TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 850(band 5) / 800(band 20)

N/A

Wi-Fi

Yes Wi-Fi 4 (802.11 b/g/n) 5GHz

Yes Wi-Fi 4 (802.11 b/g/n) MIMO

Yes Wi-Fi 4 (802.11 n)

Wi-Fi Features

Mobile Hotspot

N/A

Bluetooth

Yes v5.0

Yes

GPS

Yes with A-GPS Glonass

N/A

NFC

N/A

IR Blaster

N/A

Yes

Multimedia

Audio Jack

3.5 mm

N/A

Sensors

Fingerprint Sensor

Yes

Fingerprint Sensor Position

Rear

Side

Other Sensors

Light sensor Proximity sensor Accelerometer

N/A

Compare Prices

Not Available in any store

₹8,599

@ Amazon