Archos Diamond Alpha vs Samsung Galaxy A21: 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

Diamond Alpha:

LCD

Galaxy A21:

OLED
Screen diagonal

Diamond Alpha: 1.3 in smaller diagonal

Diamond Alpha:

5.2 in

Galaxy A21:

6.5 in
Rear camera layout

Diamond Alpha:

Single

Galaxy A21:

Quad
Release year

Diamond Alpha:

2017

Galaxy A21:

2020

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. Diamond Alpha

Height:

146.7 mm
Width:

72.5 mm
Depth:

7.5 mm

Weight:

155 g
2. Galaxy A21

Height:

Unknown
Width:

Unknown
Depth:

Unknown

Weight:

Unknown

Unavailable dimensions are omitted from the drawing.

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. Diamond Alpha

Screen diagonal:

5.2 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

74.5 cm²
2. Galaxy A21

Screen diagonal:

6.5 in

Aspect ratio (height:width):

20:9

Approximate rectangular screen area:

102 cm²

Galaxy A21 has approximately 36.8% more rectangular screen area than Diamond Alpha.

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 Diamond Alpha, Galaxy A21, compared at the same storage capacity.
Storage	Diamond Alpha	Galaxy A21
32 GB	Unknown	3 GB RAM

Diamond Alpha: Original memory entry

up to 64 GB (dedicated slot) · 512GB 4GB

Practical features

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

1. Diamond Alpha

NFC:: See details Super AMOLED
Headphone jack:: Yes
Memory card support:: See details microSD · up to 256 GB (uses SIM 2 slot)

2. Galaxy A21

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

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. Diamond Alpha

2950 mAh
2. Galaxy A21

4000 mAh

+1050 mAh versus Diamond Alpha

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. Diamond Alpha2. Galaxy A21

Everyday essentials

Everyday essentials — specifications for Diamond Alpha, Galaxy A21.
Specification	Diamond Alpha	Galaxy A21
Dimensions (HxWxD)	146.7 Х 72.5 Х 7.5 mm	Х Х mm
Weight	155 g	0 g
Technology	IPS LCD	Super AMOLED
Screen size	5.2" inch	6.5" inch
Screen resolution	1080 x 1920 px	720 x 1600 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	up to 64 GB (dedicated slot) 512GB 4GB	32GB 3GB RAM
Memory card support	microSD up to 256 GB (uses SIM 2 slot)	microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.	2950 mAh Non-removable Li-Ion	4000 mAh Non-removable Li-Po
Operating system OS	Android 6.0 (Marshmallow)	Android 10.0; One UI 2.0
Chipset	Qualcomm MSM8976 Snapdragon 652 (28 nm)	Unknown
NFC	Super AMOLED	Yes (market/region dependent)
Headphone jack	Yes	Yes

Display

Display — specifications for Diamond Alpha, Galaxy A21.
Specification	Diamond Alpha	Galaxy A21
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	74.5 cm2	102.0 cm2
Screen format	16:9 (height:width)	20:9 (height:width)
Screen to body ratio	70.1%	Unknown
PPI /points per inch/	424 PPI	270 PPI

Camera and Video

Camera and Video — specifications for Diamond Alpha, Galaxy A21.
Specification	Diamond Alpha	Galaxy A21
Rear camera, main	13 MP Single	16 MP Quad
Camera specs	13 MP 1/2.9'' 1.25µm PDAF -13 MP B/W	16 MP (wide) AF -8 MP (ultrawide) -2 MP (macro) -2 MP (depth)
Functions	Dual-LED flash HDR panorama	LED flash panorama HDR
Video	1080p@30fps	1080p@30fps
Front camera, selfie	16 MP Single	13 MP Single
Specifications	16 MP f/2.2	13 MP (wide)

Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for Diamond Alpha, Galaxy A21.
Specification	Diamond Alpha	Galaxy A21
Processor CPU	Octa-core (4x1.8 GHz Cortex-A72 & 4x1.4 GHz Cortex-A53)	Unknown
Graphics processor GPU	Adreno 510	Unknown
Antutu 7 score *	73625	Unknown

General specs

General specs — specifications for Diamond Alpha, Galaxy A21.
Specification	Diamond Alpha	Galaxy A21
Release date	2017 June	2020 April 8
Colors	Black	Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	350 EUR	250 EUR
Battery life	Stand by time- Up to 320 h (3G) Talking time- Up to 11 h (3G)	Unknown
Body build	Unknown	Glass front plastic back plastic frame

Communication and Connectivity

Communication and Connectivity — specifications for Diamond Alpha, Galaxy A21.
Specification	Diamond Alpha	Galaxy A21
SIM card	Hybrid Dual SIM (Nano-SIM dual stand-by)	Single SIM (Nano-SIM)Dual SIM (Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE band 1(2100) 3(1800) 7(2600) 20(800)	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
Speed	HSPA 42.2/11.5 Mbps LTE Cat4 150/50 Mbps	HSPA 42.2/5.76 Mbps LTE Cat4 150/50 Mbps
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 a/b/g/n/ac dual-band WiFi Direct hotspot	Wi-Fi 802.11 b/g/n Wi-Fi Direct hotspot
GPS	Yes with A-GPS	Yes with A-GPS GLONASS BDS
USB	Type-C 1.0 reversible connector USB On-The-Go	Yes
Bluetooth	Android 4.4.2 (KitKat) A2DP Super AMOLED	5.0 A2DP LE
Harmful irradiation	SAR EU - 1.02 W/kg (head) 0.76 W/kg (body)	Unknown

Music and Audio

Music and Audio — specifications for Diamond Alpha, Galaxy A21.
Specification	Diamond Alpha	Galaxy A21
Radio	panorama	FM radio
Others	Active noise cancellation with dedicated mic	Unknown

Other features

Other features — specifications for Diamond Alpha, Galaxy A21.
Specification	Diamond Alpha	Galaxy A21
Dop	Sensors Fingerprint (rear-mounted) Sensors Accelerometer gyro proximity compass - For Europe	Sensors Fingerprint (rear-mounted) accelerometer proximity compass - Fast charging 15W - Preliminary specifications

Archos Diamond Alpha vs Samsung Galaxy A21