Samsung Galaxy S8 vs Xiaomi Mi 9: 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

Galaxy S8: 18 g lighter

Galaxy S8:

155 g

Mi 9:

173 g
Width

Galaxy S8: 6.6 mm narrower

Galaxy S8:

68.1 mm

Mi 9:

74.7 mm
Screen diagonal

Galaxy S8: 0.59 in smaller diagonal

Galaxy S8:

5.8 in

Mi 9:

6.39 in
Rear camera layout

Galaxy S8:

Single

Mi 9:

Triple
Height

Galaxy S8: 8.6 mm shorter

Galaxy S8:

148.9 mm

Mi 9:

157.5 mm
Release year

Galaxy S8:

2017

Mi 9:

2019

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 S8

Height:

148.9 mm
Width:

68.1 mm
Depth:

8 mm
2. Mi 9

Height:

157.5 mm +8.6 mm versus Galaxy S8
Width:

74.7 mm +6.6 mm versus Galaxy S8
Depth:

7.6 mm

Weight

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

1. Galaxy S8

155 g
2. Mi 9

173 g

+18 g versus Galaxy S8

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 S8

Screen diagonal:

5.8 in

Aspect ratio (height:width):

18.5:9

Approximate rectangular screen area:

85.4 cm²
2. Mi 9

Screen diagonal:

6.39 in

Aspect ratio (height:width):

19.5:9

Approximate rectangular screen area:

100.2 cm²

Mi 9 has approximately 17.4% more rectangular screen area than Galaxy S8.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

Galaxy S8: Original memory entry

64 GB · 512GB 4GB

Mi 9: 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 S8

NFC:: Yes
Headphone jack:: Yes
Memory card support:: See details microSD · up to 512 GB (uses SIM 2 slot) - dual SIM model only

2. Mi 9

NFC:: Yes
Headphone jack:: No
Memory card support:: No

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 S8

3000 mAh
2. Mi 9

3300 mAh

+300 mAh versus Galaxy S8

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 S82. Mi 9

Everyday essentials

Everyday essentials — specifications for Galaxy S8, Mi 9.
Specification	Galaxy S8	Mi 9
Dimensions (HxWxD)	148.9 Х 68.1 Х 8 mm	157.5 Х 74.7 Х 7.6 mm
Weight	155 g	173 g
Technology	Super AMOLED	Super AMOLED
Screen size	5.8" inch	6.39" inch
Screen resolution	1440 x 2960 px	1080 x 2340 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	64 GB 512GB 4GB	64/128 GB 6/8 GB RAM
Memory card support	microSD up to 512 GB (uses SIM 2 slot) - dual SIM model only	No
Battery Capacity is not battery life. No endurance test is implied.	3000 mAh Non-removable Li-Ion	3300 mAh Non-removable Li-Po
Operating system OS	Android 7.0 (Nougat) upgradable to Android 8.0 (Oreo)	Android 9.0 (Pie)
Chipset	Exynos 8895 Octa (10 nm) EMEA -Qualcomm MSM8998 Snapdragon 835 (10 nm) USA & China	Qualcomm SDM855 Snapdragon 855 (7 nm)
NFC	Yes	Yes
Headphone jack	Yes	No

Display

Display — specifications for Galaxy S8, Mi 9.
Specification	Galaxy S8	Mi 9
Touchscreen	capacitive touchscreen	Super AMOLED capacitive touchs
Display colors	16M	16M
Screen area	84.8 cm2	100.2 cm2
Screen format	18.5:9 (height:width)	19.5:9 (height:width)
Screen to body ratio	83.6%	85.2%
PPI /points per inch/	570 PPI	403 PPI
Screen protection	Corning Gorilla Glass 5	Corning Gorilla Glass 6

Camera and Video

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

Camera and Video — specifications for Galaxy S8, Mi 9.
Specification	Galaxy S8	Mi 9
Rear camera, main	12 MP Single	48 MP Triple
Camera specs	12 MP f/1.7 26mm (wide) 1/2.55'' 1.4µm OIS dual pixel PDAF	48 MP f/1.8 1/2'' 0.8µm Laser/PDAF -16 MP f/2.2 13mm (ultrawide) 1/3.0'' 1.0µm Laser/PDAF -12 MP 54mm (telephoto) 1/3.6'' Laser/PDAF 2x optical zoom
Functions	Dual video call Auto-HDR	HDR
Video	1440p@30fps	1080p@30fps
Front camera, selfie	8 MP Single	20 MP Single
Specifications	8 MP f/1.7 25mm (wide) 1/3.6'' 1.22µm AF	20 MP f/2.0 0.9μm
DxOMark Main Score *	Unknown	110
DxOMark Photo *	71	115
DxOMark Video *	75	99
DxOMark Selfie Score *	73	Unknown

Performance

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

Performance — specifications for Galaxy S8, Mi 9.
Specification	Galaxy S8	Mi 9
Processor CPU	Octa-core (4x2.3 GHz Mongoose M2 & 4x1.7 GHz Cortex-A53) EMEA -Octa-core (4x2.35 GHz Kryo & 4x1.9 GHz Kryo) USA & China	Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485)
Graphics processor GPU	Mali-G71 MP20 EMEA -Adreno 540 USA & China	Adreno 640
Antutu 7 score *	202356	371108
GeekBench 4 Single Core *	1763	3235
GeekBench 4 Multi-Core *	6028	10405
GeekBench 4 RenderScript *	8798	7120
Antutu 8 score *	231907	445567
GeekBench 4 Battery *	3410	6086
GeekBench 5 Single Core *	340	678
GeekBench 5 Multi-Core *	1454	2575

General specs

General specs — specifications for Galaxy S8, Mi 9.
Specification	Galaxy S8	Mi 9
Release date	2017 March	2019 February
Colors	Midnight Black Orchid Gray Arctic Silver Coral Blue Maple Gold Rose Pink Burgundy Red	Lavender Violet Ocean Blue Piano Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	390 EUR	450 EUR
Battery life	Talking time- Up to 20 h (3G) Music play - Up to 67 h	Unknown
Body build	Front/back glass (Gorilla Glass 5) aluminum frame	Back glass (Gorilla Glass 5) aluminum frame (7000 series)

Communication and Connectivity

Communication and Connectivity — specifications for Galaxy S8, Mi 9.
Specification	Galaxy S8	Mi 9
SIM card	Single SIM (Nano-SIM)Hybrid Dual SIM (Nano-SIM dual stand-by)	Dual SIM (Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) -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) 12(700) 13(700) 17(700) 18(800) 19(800) 20(800) 25(1900) 26(850) 28(700) 32(1500) 66(1700/2100) 38(2600) 39(1900) 40(2300) 41(2500)	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -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) 12(700) 17(700) 20(800) 28(700) 38(2600) 39(1900) 40(2300)
Speed	HSPA 42.2/5.76 Mbps LTE-A (5CA) Cat16 1024/150 Mbps	HSPA LTE-A
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 a/b/g/n/ac dual-band Wi-Fi Direct DLNA hotspot
GPS	Yes with A-GPS GLONASS BDS GALILEO	Yes with dual-band A-GPS GLONASS BDS GALILEO QZSS
USB	3.1 Type-C 1.0 reversible connector	2.0 Type-C 1.0 reversible connector USB On-The-Go
Bluetooth	5.0 A2DP LE aptX	5.0 A2DP LE aptX HD
Harmful irradiation	SAR - 0.44 W/kg (head) 0.75 W/kg (body) SAR EU - 0.32 W/kg (head) 1.27 W/kg (body)	Unknown

Music and Audio

Music and Audio — specifications for Galaxy S8, Mi 9.
Specification	Galaxy S8	Mi 9
Radio	No	No
Others	HDR10 -3D Touch (home button only) -Always-on display 32-bit/384kHz audio -Active noise cancellation with dedicated mic	HDR10 -DCI-P3 Active noise cancellation with dedicated mic

Other features

Other features — specifications for Galaxy S8, Mi 9.
Specification	Galaxy S8	Mi 9
Dop	Sensors Iris scanner fingerprint (rear-mounted) accelerometer gyro proximity compass barometer heart rate SpO2 - Samsung DeX (desktop experience support) -Fast battery charging (Quick Charge 2.0) -Qi/PMA wireless charging (market dependent) -ANT+ -Bixby natural language commands and dictation - Samsung Pay (Visa MasterCard certified) -IP68 dust/water proof (up to 1.5m for 30 mins) - Versions: G950F (Europe Global Single-SIM); G950FD (Global Dual-SIM); G950U (USA Unlocked); G950A (AT&T); G950P (Sprint); G950T (T-Mobile); G950V (Verizon); G950R4 (US Cellular); G950W (Canada); G950	Sensors Fingerprint (under display) accelerometer gyro proximity compass Infrared port - Fast battery charging 27W (Quick Charge 4+) -Fast wireless charging 20W

Samsung Galaxy S8 vs Xiaomi Mi 9