Samsung Galaxy A9 (2018) vs Xiaomi Redmi Go: 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 A9 (2018):

OLED

Redmi Go:

LCD
Weight

Redmi Go: 46 g lighter

Galaxy A9 (2018):

183 g

Redmi Go:

137 g
Width

Redmi Go: 6.9 mm narrower

Galaxy A9 (2018):

77 mm

Redmi Go:

70.1 mm
Screen diagonal

Redmi Go: 1.3 in smaller diagonal

Galaxy A9 (2018):

6.3 in

Redmi Go:

5 in
Chipset

Galaxy A9 (2018):

Qualcomm SDM660 Snapdragon 660 (14 nm)

Redmi Go:

Qualcomm MSM8917 Snapdragon 425 (28 nm)
Rear camera layout

Galaxy A9 (2018):

Quad

Redmi Go:

Single

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 A9 (2018)

Height:

162.5 mm +22.1 mm versus Redmi Go
Width:

77 mm +6.9 mm versus Redmi Go
Depth:

7.8 mm
2. Redmi Go

Height:

140.4 mm
Width:

70.1 mm
Depth:

8.4 mm +0.6 mm versus Galaxy A9 (2018)

Weight

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

1. Galaxy A9 (2018)

183 g

+46 g versus Redmi Go
2. Redmi Go

137 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 A9 (2018)

Screen diagonal:

6.3 in

Aspect ratio (height:width):

18.5:9

Approximate rectangular screen area:

100.7 cm²
2. Redmi Go

Screen diagonal:

5 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

68.9 cm²

Galaxy A9 (2018) has approximately 46.2% more rectangular screen area than Redmi Go.

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 A9 (2018), Redmi Go, compared at the same storage capacity.
Storage	Galaxy A9 (2018)	Redmi Go
8 GB	Unknown	1 GB RAM

Galaxy A9 (2018): Original memory entry

64/128 GB · 6/8 GB RAM

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 A9 (2018)

NFC:: Yes
Headphone jack:: Yes
Memory card support:: See details microSD · up to 512 GB (dedicated slot)

2. Redmi Go

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 128 GB (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. Galaxy A9 (2018)

3800 mAh

+800 mAh versus Redmi Go
2. Redmi Go

3000 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 A9 (2018)2. Redmi Go

Everyday essentials

Everyday essentials — specifications for Galaxy A9 (2018), Redmi Go.
Specification	Galaxy A9 (2018)	Redmi Go
Dimensions (HxWxD)	162.5 Х 77 Х 7.8 mm	140.4 Х 70.1 Х 8.4 mm
Weight	183 g	137 g
Technology	Super AMOLED	IPS LCD
Screen size	6.3" inch	5" inch
Screen resolution	1080 x 2220 px	720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	64/128 GB 6/8 GB RAM	8 GB 1 GB RAM
Memory card support	microSD up to 512 GB (dedicated slot)	microSD up to 128 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.	3800 mAh Non-removable Li-Ion	3000 mAh Non-removable Li-Ion
Operating system OS	Android 8.0 (Oreo) planned upgrade to Android 9.0 (Pie)	Android 8.1 Oreo (Go edition)
Chipset	Qualcomm SDM660 Snapdragon 660 (14 nm)	Qualcomm MSM8917 Snapdragon 425 (28 nm)
NFC	Yes	Unknown
Headphone jack	Yes	Yes

Display

Display — specifications for Galaxy A9 (2018), Redmi Go.
Specification	Galaxy A9 (2018)	Redmi Go
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	100.2 cm2	68.9 cm2
Screen format	18.5:9 (height:width)	16:9 (height:width)
Screen to body ratio	80.1%	70.0%
PPI /points per inch/	393 PPI	294 PPI

Camera and Video

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

Camera and Video — specifications for Galaxy A9 (2018), Redmi Go.
Specification	Galaxy A9 (2018)	Redmi Go
Rear camera, main	24 MP Quad	8 MP Single
Camera specs	24 MP f/1.7 27mm (wide) 1/2.8'' 0.9µm PDAF -8 MP f/2.4 12mm (ultrawide) 1/4.0'' 1.12µm -10 MP f/2.4 52mm (telephoto) 1/3.9'' 1.0µm 2x optical zoom -5 MP f/2.2 24mm (wide) 1/5.0'' 1.12µm depth sensor	8 MP f/2.0 1.12µm AF
Functions	HDR	HDR
Video	1080p@30fps	1080p
Front camera, selfie	24 MP Single	5 MP Single
Specifications	24 MP f/2.0 27mm (wide) 1/2.8'' 0.9μm	5 MP f/2.2 1.12µm
DxOMark Main Score *	88	Unknown
DxOMark Photo *	93	Unknown
DxOMark Video *	77	Unknown

Performance

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

Performance — specifications for Galaxy A9 (2018), Redmi Go.
Specification	Galaxy A9 (2018)	Redmi Go
Processor CPU	Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)	Quad-core 1.4 GHz Cortex-A53
Graphics processor GPU	Adreno 512	Adreno 308
Antutu 7 score *	142728	32456
GeekBench 4 Single Core *	Unknown	629
GeekBench 4 Multi-Core *	Unknown	1587
GeekBench 5 Single Core *	300	Unknown
GeekBench 5 Multi-Core *	1336	Unknown

General specs

General specs — specifications for Galaxy A9 (2018), Redmi Go.
Specification	Galaxy A9 (2018)	Redmi Go
Release date	2018 October	2019 January
Colors	Caviar Black Lemonade Blue Bubblegum Pink	Black Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	600 EUR	80 EUR

Communication and Connectivity

Communication and Connectivity — specifications for Galaxy A9 (2018), Redmi Go.
Specification	Galaxy A9 (2018)	Redmi Go
SIM card	Dual SIM (Nano-SIM dual stand-by)	Dual SIM
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100) 2(1900) 3(1800) 4(1700/2100) 5(850) 7(2600) 8(900) 12(700) 13(700) 17(700) 20(800) 26(850) 28(700) 38(2600) 40(2300) 41(2500) 66(1700/2100)	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100) 2(1900) 3(1800) 4(1700/2100) 5(850) 7(2600) 8(900) 20(800) 28(700) 38(2600) 40(2300) 41(2500)
Speed	HSPA 42.2/5.76 Mbps LTE-A (3CA) Cat9 450/50 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 Wi-Fi Direct hotspot	Wi-Fi 802.11 b/g/n WiFi Direct hotspot
GPS	Yes with A-GPS GLONASS BDS GALILEO	Yes with A-GPS GLONASS BDS
USB	2.0 Type-C 1.0 reversible connector	microUSB 2.0
Bluetooth	5.0 A2DP LE	4.1 A2DP LE
Harmful irradiation	SAR - 0.27 W/kg (head) 0.84 W/kg (body) SAR EU - 0.35 W/kg (head) 1.59 W/kg (body)	Unknown

Music and Audio

Music and Audio — specifications for Galaxy A9 (2018), Redmi Go.
Specification	Galaxy A9 (2018)	Redmi Go
Radio	FM radio	FM radio
Others	Active noise cancellation with dedicated mic -Dolby Atmos	Active noise cancellation with dedicated mic

Other features

Other features — specifications for Galaxy A9 (2018), Redmi Go.
Specification	Galaxy A9 (2018)	Redmi Go
Dop	Sensors Fingerprint (rear-mounted) accelerometer gyro proximity compass - ANT+ -Fast battery charging - Samsung Pay - Also known as Samsung Galaxy A9 Star Pro Samsung Galaxy A9s Versions: SM-A920F/DS (Global); SM-A9200 (China)	Sensors Accelerometer proximity

Samsung Galaxy A9 (2018) vs Xiaomi Redmi Go