Huawei Honor 9X Pro vs vivo X21 UD: 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

Honor 9X Pro:

LCD

X21 UD:

OLED
Weight

X21 UD: 49.8 g lighter

Honor 9X Pro:

206 g

X21 UD:

156.2 g
Width

X21 UD: 2.4 mm narrower

Honor 9X Pro:

77.2 mm

X21 UD:

74.8 mm
Screen diagonal

X21 UD: 0.31 in smaller diagonal

Honor 9X Pro:

6.59 in

X21 UD:

6.28 in
Memory variants

At 128 GB storage

Honor 9X Pro:

8 GB RAM

X21 UD:

6 GB RAM
Chipset

Honor 9X Pro:

HiSilicon Kirin 810 (7 nm)

X21 UD:

Qualcomm SDM660 Snapdragon 660 (14 nm)

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. Honor 9X Pro

Height:

163.1 mm +8.6 mm versus X21 UD
Width:

77.2 mm +2.4 mm versus X21 UD
Depth:

8.8 mm +1.4 mm versus X21 UD
2. X21 UD

Height:

154.5 mm
Width:

74.8 mm
Depth:

7.4 mm

Weight

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

1. Honor 9X Pro

206 g

+49.8 g versus X21 UD
2. X21 UD

156.2 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. Honor 9X Pro

Screen diagonal:

6.59 in

Aspect ratio (height:width):

19.5:9

Approximate rectangular screen area:

106.6 cm²
2. X21 UD

Screen diagonal:

6.28 in

Aspect ratio (height:width):

19:9

Approximate rectangular screen area:

98.4 cm²

Honor 9X Pro has approximately 8.3% more rectangular screen area than X21 UD.

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 Honor 9X Pro, X21 UD, compared at the same storage capacity.
Storage	Honor 9X Pro	X21 UD
128 GB Recorded for all phones	8 GB RAM	6 GB RAM
256 GB	8 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. Honor 9X Pro

NFC:: See details Yes (market/region dependent)
Headphone jack:: Yes
Memory card support:: See details microSD · up to 512 GB

2. X21 UD

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 256 GB (uses SIM 2 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. Honor 9X Pro

4000 mAh

+800 mAh versus X21 UD
2. X21 UD

3200 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. Honor 9X Pro2. X21 UD

Everyday essentials

Everyday essentials — specifications for Honor 9X Pro, X21 UD.
Specification	Honor 9X Pro	X21 UD
Dimensions (HxWxD)	163.1 Х 77.2 Х 8.8 mm	154.5 Х 74.8 Х 7.4 mm
Weight	206 g	156.2 g
Technology	LTPS IPS LCD	Super AMOLED
Screen size	6.59" inch	6.28" inch
Screen resolution	1080 x 2340 px	1080 x 2280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	128/256 GB 8 GB RAM	128 GB 6 GB RAM
Memory card support	microSD up to 512 GB	microSD up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.	4000 mAh Non-removable Li-Po	3200 mAh Non-removable Li-Ion
Operating system OS	Android 9.0 (Pie); EMUI 9.1	Android 8.1 (Oreo); Funtouch 4
Chipset	HiSilicon Kirin 810 (7 nm)	Qualcomm SDM660 Snapdragon 660 (14 nm)
NFC	Yes (market/region dependent)	Unknown
Headphone jack	Yes	Yes

Display

Display — specifications for Honor 9X Pro, X21 UD.
Specification	Honor 9X Pro	X21 UD
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	106.6 cm2	98.4 cm2
Screen format	19.5:9 (height:width)	19:9 (height:width)
Screen to body ratio	84.7%	85.2%
PPI /points per inch/	391 PPI	402 PPI

Camera and Video

Camera and Video — specifications for Honor 9X Pro, X21 UD.
Specification	Honor 9X Pro	X21 UD
Rear camera, main	48 MP Triple	12 MP Dual
Camera specs	48 MP f/1.8 (wide) 1/2" PDAF - 8 MP f/2.4 13mm (ultrawide) - 2 MP (depth sensor)	12 MP f/1.8 1/2.55'' 1.4µm dual pixel PDAF -5 MP f/2.4 depth sensor
Functions	LED flash HDR panorama	LED flash HDR panorama
Video	1080p@30fps	1080p@30fps
Front camera, selfie	16 MP Single	12 MP Single
Specifications	Motorized pop-up 16 MP f/2.2	12 MP f/2.0

Performance

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

Performance — specifications for Honor 9X Pro, X21 UD.
Specification	Honor 9X Pro	X21 UD
Processor CPU	Octa-core (2x2.27 GHz Cortex-A76 & 6x1.88 GHz Cortex-A55)	Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
Graphics processor GPU	Mali-G52	Adreno 512
Antutu 7 score *	Unknown	143592
Antutu 8 score *	298561	Unknown

General specs

General specs — specifications for Honor 9X Pro, X21 UD.
Specification	Honor 9X Pro	X21 UD
Release date	2019 July	2018 March
Colors	Magic night black Phantom Purple	Black Ruby Red
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	290 EUR	550 EUR
Body build	Front/back glass aluminum frame	Front glass aluminum body

Communication and Connectivity

Communication and Connectivity — specifications for Honor 9X Pro, X21 UD.
Specification	Honor 9X Pro	X21 UD
SIM card	Single SIM (Nano-SIM)Dual SIM (Nano-SIM dual stand-by)	Hybrid 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 / 1900 / 2100 -4G - LTE band 1(2100) 3(1800) 7(2600) 8(900) 20(800)	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100) 2(1900) 3(1800) 5(850) 8(900) 34(2000) 38(2600) 39(1900) 40(2300) 41(2500)
Speed	HSPA 42.2/5.76 Mbps LTE-A (2CA) Cat12 600/50 Mbps	HSPA 42.2/5.76 Mbps LTE-A (2CA) Cat6 300/50 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 a/b/g/n/ac dual-band WiFi Direct hotspot
GPS	Yes with A-GPS GLONASS BDS	Yes with A-GPS GLONASS
USB	2.0 Type-C 1.0 reversible connector	microUSB 2.0 USB On-The-Go
Bluetooth	5.0 A2DP LE	5.0 A2DP LE

Music and Audio

Music and Audio — specifications for Honor 9X Pro, X21 UD.
Specification	Honor 9X Pro	X21 UD
Radio	FM radio	FM radio
Others	Active noise cancellation with dedicated mic	32-bit/192kHz audio -Active noise cancellation with dedicated mic

Other features

Other features — specifications for Honor 9X Pro, X21 UD.
Specification	Honor 9X Pro	X21 UD
Dop	Sensors Fingerprint (side-mounted) accelerometer gyro proximity compass - Fast battery charging 10W	Sensors Fingerprint (under display) accelerometer proximity compass - Fast battery charging

Huawei Honor 9X Pro vs vivo X21 UD