Samsung Galaxy A21 vs TECNO Spark CM: specs comparison

Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

Display technology

OLED versus LCD

Galaxy A21:

OLED

Spark CM:

LCD
Screen diagonal

Spark CM: 0.8 in smaller diagonal

Galaxy A21:

6.5 in

Spark CM:

5.7 in
Rear camera layout

Galaxy A21:

Quad

Spark CM:

Single
Release year

Galaxy A21:

2020

Spark CM:

2017

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

1. Galaxy A21

Height:

Unknown
Width:

Unknown
Depth:

Unknown

Weight:

Unknown

Unavailable dimensions are omitted from the drawing.
2. Spark CM

Height:

152.2 mm
Width:

71.7 mm
Depth:

5.6 mm

Weight:

172 g

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

1. Galaxy A21

Screen diagonal:

6.5 in

Aspect ratio (height:width):

20:9

Approximate rectangular screen area:

102 cm²
2. Spark CM

Screen diagonal:

5.7 in

Aspect ratio (height:width):

18:9

Approximate rectangular screen area:

83.8 cm²

Galaxy A21 has approximately 21.7% more rectangular screen area than Spark CM.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM for Galaxy A21, Spark CM, compared at the same storage capacity.
Storage	Galaxy A21	Spark CM
16 GB	Not recorded	2 GB RAM
32 GB	3 GB RAM	Not recorded

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Galaxy A21

NFC:: See details Yes (market/region dependent)
Headphone jack:: Yes
Memory card support:: See details microSDXC (dedicated slot)

2. Spark CM

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 32 GB

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

1. Galaxy A21

4000 mAh

+950 mAh versus Spark CM
2. Spark CM

3050 mAh

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. Galaxy A212. Spark CM

Everyday essentials

Everyday essentials — specifications for Galaxy A21, Spark CM.
Specification	Galaxy A21	Spark CM
Dimensions (HxWxD)	Х Х mm	152.2 Х 71.7 Х 5.6 mm
Weight	0 g	172 g
Technology	Super AMOLED	IPS LCD
Screen size	6.5" inch	5.7" inch
Screen resolution	720 x 1600 px	720 x 1440 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	32GB 3GB RAM	16 GB 2 GB RAM
Memory card support	microSDXC (dedicated slot)	microSD up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.	4000 mAh Non-removable Li-Po	3050 mAh Non-removable Li-Ion
Operating system OS	Android 10.0; One UI 2.0	Android 7.0 (Nougat)
Chipset	Unknown	Mediatek MT6737
NFC	Yes (market/region dependent)	Unknown
Headphone jack	Yes	Yes

Display

Display — specifications for Galaxy A21, Spark CM.
Specification	Galaxy A21	Spark CM
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	102.0 cm2	83.8 cm2
Screen format	20:9 (height:width)	18:9 (height:width)
Screen to body ratio	Unknown	76.8%
PPI /points per inch/	270 PPI	282 PPI
Screen protection	Unknown	Corning Gorilla Glass (unspecified version)

Camera and Video

Camera and Video — specifications for Galaxy A21, Spark CM.
Specification	Galaxy A21	Spark CM
Rear camera, main	16 MP Quad	13 MP Single
Camera specs	16 MP (wide) AF -8 MP (ultrawide) -2 MP (macro) -2 MP (depth)	13 MP f/2.0 AF
Functions	LED flash panorama HDR	LED flash
Video	1080p@30fps	1080p@30fps
Front camera, selfie	13 MP Single	8 MP Single
Specifications	13 MP (wide)	8 MP

Performance

Performance — specifications for Galaxy A21, Spark CM.
Specification	Galaxy A21	Spark CM
Processor CPU	Unknown	Quad-core 1.3 GHz Cortex-A53
Graphics processor GPU	Unknown	Mali-T720MP2

General specs

General specs — specifications for Galaxy A21, Spark CM.
Specification	Galaxy A21	Spark CM
Release date	2020 April 8	2017 December
Colors	Black	Midnight Black Champagne Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	250 EUR	Unknown
Body build	Glass front plastic back plastic frame	Unknown

Communication and Connectivity

Communication and Connectivity — specifications for Galaxy A21, Spark CM.
Specification	Galaxy A21	Spark CM
SIM card	Single SIM (Nano-SIM)Dual SIM (Nano-SIM dual stand-by)	Dual SIM (Micro-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only) -3G - HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 1700(AWS) / 1900 / 2100 -4G - LTE	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100) 3(1800) 8(900) 40(2300) 41(2500)
Speed	HSPA 42.2/5.76 Mbps LTE Cat4 150/50 Mbps	HSPA LTE-A
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 b/g/n Wi-Fi Direct hotspot	Wi-Fi 802.11 a/b/g/n/ac dual-band WiFi Direct hotspot
GPS	Yes with A-GPS GLONASS BDS	Yes with A-GPS
USB	Yes	microUSB 2.0
Bluetooth	5.0 A2DP LE	4.2 A2DP LE

Music and Audio

Music and Audio — specifications for Galaxy A21, Spark CM.
Specification	Galaxy A21	Spark CM
Radio	FM radio	FM radio

Other features

Other features — specifications for Galaxy A21, Spark CM.
Specification	Galaxy A21	Spark CM
Dop	Sensors Fingerprint (rear-mounted) accelerometer proximity compass - Fast charging 15W - Preliminary specifications	Sensors Fingerprint (rear-mounted) accelerometer proximity

Samsung Galaxy A21 vs TECNO Spark CM