Motorola ATRIX 4G vs Samsung Galaxy A51: 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.

Weight

ATRIX 4G: 37 g lighter

ATRIX 4G:

135 g

Galaxy A51:

172 g
Width

ATRIX 4G: 10.1 mm narrower

ATRIX 4G:

63.5 mm

Galaxy A51:

73.6 mm
Screen diagonal

ATRIX 4G: 2.5 in smaller diagonal

ATRIX 4G:

4 in

Galaxy A51:

6.5 in
Rear camera layout

ATRIX 4G:

Single

Galaxy A51:

Quad
Depth

Galaxy A51: 3.1 mm thinner

ATRIX 4G:

11 mm

Galaxy A51:

7.9 mm
Height

ATRIX 4G: 40.7 mm shorter

ATRIX 4G:

117.8 mm

Galaxy A51:

158.5 mm

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. ATRIX 4G

Height:

117.8 mm
Width:

63.5 mm
Depth:

11 mm +3.1 mm versus Galaxy A51
2. Galaxy A51

Height:

158.5 mm +40.7 mm versus ATRIX 4G
Width:

73.6 mm +10.1 mm versus ATRIX 4G
Depth:

7.9 mm

Weight

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

1. ATRIX 4G

135 g
2. Galaxy A51

172 g

+37 g versus ATRIX 4G

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. ATRIX 4G

Screen diagonal:

4 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

44.1 cm²
2. Galaxy A51

Screen diagonal:

6.5 in

Aspect ratio (height:width):

20:9

Approximate rectangular screen area:

102 cm²

Galaxy A51 has approximately 131.3% more rectangular screen area than ATRIX 4G.

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 ATRIX 4G, Galaxy A51, compared at the same storage capacity.
Storage	ATRIX 4G	Galaxy A51
16 GB	1 GB RAM	Not recorded
64 GB	Not recorded	4 GB RAM
128 GB	Not recorded	4 / 6 / 8 GB RAM Alternative RAM configurations

Practical features

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

1. ATRIX 4G

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

2. Galaxy A51

NFC:: Yes
Headphone jack:: Yes
Memory card support:: See details microSD · up to 1 TB (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. ATRIX 4G

1930 mAh
2. Galaxy A51

4000 mAh

+2070 mAh versus ATRIX 4G

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. ATRIX 4G2. Galaxy A51

Everyday essentials

Everyday essentials — specifications for ATRIX 4G, Galaxy A51.
Specification	ATRIX 4G	Galaxy A51
Dimensions (HxWxD)	117.8 Х 63.5 Х 11 mm	158.5 Х 73.6 Х 7.9 mm
Weight	135 g	172 g
Technology	TFT	Super AMOLED
Screen size	4" inch	6.5" inch
Screen resolution	540 x 960 px	1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	16 GB 1 GB RAM	64GB 4GB RAM 128GB 4GB RAM 128GB 6GB RAM 128GB 8GB RAM
Memory card support	microSD up to 32 GB (dedicated slot)	microSD up to 1 TB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.	1930 mAh Removable Li-Po	4000 mAh Non-removable Li-Po
Operating system OS	Android 2.3 (Gingerbread) not upgradable to 4.1 (Jelly Bean)	Android 10.0; One UI 2
Chipset	Nvidia Tegra 2 AP20H	Exynos 9611 (10nm)
NFC	Unknown	Yes
Headphone jack	Yes	Yes

Display

Display — specifications for ATRIX 4G, Galaxy A51.
Specification	ATRIX 4G	Galaxy A51
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	44.1 cm2	102.0 cm2
Screen format	16:9 (height:width)	20:9 (height:width)
Screen to body ratio	59.0%	87.4%
PPI /points per inch/	275 PPI	405 PPI
Screen protection	Corning Gorilla Glass	Corning Gorilla Glass 3

Camera and Video

Camera and Video — specifications for ATRIX 4G, Galaxy A51.
Specification	ATRIX 4G	Galaxy A51
Rear camera, main	5 MP Single	48 MP Quad
Camera specs	5 MP AF	48 MP f/2.0 26mm (wide) 1/2.0" 0.8µm PDAF -12 MP f/2.2 12mm (ultrawide) -5 MP f/2.4 25mm (macro) 1/5.0" 1.12µm -5 MP 1.12µm depth sensor
Functions	LED flash	HDR
Video	720p@30fps 1080p (via SW update)	1080p@30fps
Front camera, selfie	0.3 MP Single	32 MP Single
Specifications	VGA	32 MP f/2.2 26mm (wide) 1/2.8" 0.8µm

Performance

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

Performance — specifications for ATRIX 4G, Galaxy A51.
Specification	ATRIX 4G	Galaxy A51
Processor CPU	Dual-core 1.0 GHz Cortex-A9	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
Graphics processor GPU	ULP GeForce	Mali-G72 MP3
Antutu 7 score *	Unknown	155326
Antutu 8 score *	Unknown	186846
GeekBench 5 Single Core *	Unknown	322
GeekBench 5 Multi-Core *	Unknown	1212

General specs

General specs — specifications for ATRIX 4G, Galaxy A51.
Specification	ATRIX 4G	Galaxy A51
Release date	2011 January	2019 December
Colors	Black	Prism Crush Black White Blue Pink
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	190 EUR	$280
Battery life	Stand by time- Up to 400 h (2G) / Up to 350 h (3G) Talking time- Up to 8 h 50 min (2G) / Up to 9 h (3G)	Talking time- Up to 32 h (3G) Music play - Up to 87 h
Body build	Unknown	Glass front (Gorilla Glass 3) plastic back plastic frame

Communication and Connectivity

Communication and Connectivity — specifications for ATRIX 4G, Galaxy A51.
Specification	ATRIX 4G	Galaxy A51
SIM card	Mini-SIM	Single SIM (Nano-SIM)Dual SIM (Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) -3G - HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE (unspecified)
Speed	HSPA 14.4/5.76 Mbps	HSPA LTE-A
GPRS	Class 12	Yes
Edge	Class 12	Yes
Wi-Fi	Wi-Fi 802.11 a/b/g/n dual-band DLNA hotspot	Wi-Fi 802.11 a/b/g/n/ac dual-band Wi-Fi Direct hotspot
GPS	Yes with A-GPS	Yes with A-GPS GLONASS GALILEO BDS
USB	microUSB 2.0	2.0 Type-C 1.0 reversible connector USB On-The-Go
Bluetooth	2.1 A2DP EDR	5.0 A2DP LE
Harmful irradiation	SAR - 1.45 W/kg (head) 0.63 W/kg (body)	SAR - 0.80 W/kg (head) 0.67 W/kg (body) SAR EU - 0.37 W/kg (head) 1.59 W/kg (body)

Music and Audio

Music and Audio — specifications for ATRIX 4G, Galaxy A51.
Specification	ATRIX 4G	Galaxy A51
Radio	No	FM radio
Others	Active noise cancellation with dedicated mic	Active noise cancellation with dedicated mic

Other features

Other features — specifications for ATRIX 4G, Galaxy A51.
Specification	ATRIX 4G	Galaxy A51
Dop	Sensors Fingerprint (rear-mounted) accelerometer proximity compass - HDMI port -MP3/WAV/WMA/eAAC+ player -MP4/H.264/WMV/Xvid/DivX player -Photo viewer/editor -Organizer -Document editor -Voice memo/dial/commands -Predictive text input - For AT&T Also known as Motorola ATRIX 4G MB860	Sensors Fingerprint (under display optical) accelerometer gyro proximity compass - ANT+ - Fast battery charging 15W - Versions: SM-A515F/DSN (Global); SM-A515F/DS (LATAM); SM-A515F/DST (Brazil); SM-A515F/DSM (Russia); SM-A515F/N (Australia)

Motorola ATRIX 4G vs Samsung Galaxy A51