Oppo Find X (128GB) vs Xiaomi Mi 9 (128GB/8GB)

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Side by side comparison between Oppo Find X vs Xiaomi Mi 9 phones, differences, pros, cons and full specifications. What's the better?

3/8/2019 12:05 PM, updated: 6/9/2025 11:20 PM

Compare Xiaomi Mi 9 X Oppo Find X (128GB) 06Points

Specifications Compare Models Pictures

6.42"
AMOLED

1080x2340

16
MP

25mp

8GB
RAM

Octa-core

3730
mAh

(Non removable)

13Points Xiaomi Mi 9 (128GB/8GB) Compare Oppo Find X X

Specifications Compare Models Pictures

6.39"
AMOLED

1080x2340

48
MP

20mp

8GB
RAM

Octa-core

3300
mAh

(Non removable)

What's the better phone? Xiaomi Mi 9 (128GB/8GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

6 Advantages Oppo Find X (128GB)	vs	13 Advantages Xiaomi Mi 9 (128GB/8GB)
+6.42"1% Larger screen	vs	6.39"
+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness	vs	Not supported
+(front) 25MP25% Higher resolution secondary camera to take pictures and selfies	vs	(front) 20MP
+Face unlock 3DAdvantage Sensors help you use the device	vs	Face unlock 2D
+3730 mAh13% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3300 mAh
2.8GHz 64bit Octa-core (10nm)	vs	+2.84GHz 64bit Octa-core (7nm)6% More powerful processor, you can open your applications faster
186 grams (6.51 ounces)	vs	+173 grams (6.06 ounces)8% Lighter
9.4 millimeters (0.37 inches)	vs	+7.61 millimeters (0.3 inches)24% Thinner
AMOLED	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
401 PPI	vs	+403 PPI1% Crisper display of text, images and videos because it has more pixels per inch (ppi)
(dual camera) 16MP + 20MP	vs	+(triple camera) 48MP + 16MP + 12MP112% Higher resolution main camera
Only digital zoom	vs	+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures
1/2.6" inches	vs	+1/2" inches30% The larger sensor camera lets you take photos with better depth.
f/2.0 (aperture)	vs	+f/1.8 (aperture)11% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
Not supported	vs	+Fingerprint sensor (under display)Advantage Sensors help you use the device
20W	vs	+27W35% More power (watts) to charge the battery faster. Sometimes, the charger that comes with the device doesn't have the same power supported by the device. Check before you buy it.
Not supported	vs	+Qi wireless chargingAdvantage Wireless charging is another way to charge the battery.
Not supported	vs	+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.

35 Common items in both devices

8GB LPDDR4X

128GB (110GB available) / 128GB (109GB available)

UFS 2.1

Aluminum frame, glass front/back

16 million

1080x2340 pixels

Dual-LED flash

+28 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

📱 Model features
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Change model		Choose the model
Model	Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Other model names	BBK Oppo Find X PAFM00, PAFT00	小米9, Xiaomi Mi9 (8GB RAM), M1902F1A, M1902F1G, M1902F1T
Country or region available	(Global, International), China, Hong Kong	China
Brand	Oppo	Xiaomi
Release date	7/1/2018	3/1/2019
Depth	9.4 millimeters (0.37 inches)	7.61 millimeters (0.3 inches)
Size (width x height)	74.2 x 156.7 millimeters (2.92 x 6.17 in)	74.67 x 157.5 millimeters (2.94 x 6.2 in)
Weight	186 grams (6.51 ounces)	173 grams (6.06 ounces)
Build, materials	Aluminum frame, glass front/back Back: Gorilla Glass 5	Aluminum frame, glass front/back
Protection against water and others	Not supported	Not supported
📲 Display
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Display type	AMOLED	Super AMOLED
Screen size	6.42" inches	6.39" inches
Screen-to-body ratio	~87% (screen-to-body ratio)	~85.2% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1080x2340 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	401 PPI	403 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Gorilla Glass 6
Refresh rate	60Hz	feature not registered
Display features	Not supported	feature not registered
🤖 Operating System
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
System version	Android 8.1 Oreo	Android 9.0 Pie
Firmware update	Android 10	Android 10
User Interface	ColorOS 5.1 / 7.0	feature not registered
⚙️ Processor
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Chipset	64bit: Qualcomm Snapdragon 845 (SDM845) (10nm)	64bit: Qualcomm Snapdragon 855 (SM8150) (7nm)
CPU	Octa-core, 2 processors: 4x 2.8GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core)	Octa-core, 3 processors: 1x 2.84GHz Kryo 485 (Single-core) 3x 2.42GHz Kryo 485 (Triple-core) 4x 1.78GHz Kryo 485 (Quad-core)
GPU graphical controller	Qualcomm Adreno 630 (710MHz)	Qualcomm Adreno 640 (585MHz)
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
RAM memory	8GB LPDDR4X	8GB LPDDR4X
Internal storage	128GB (110GB available) UFS 2.1	128GB (109GB available) UFS 2.1
External storage	Not supported	Not supported
📶 Mobile networks
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Dual-SIM Standby - Call active on one sim card
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	1024/150 Mbps	1024/150 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	CDMA 800, GSM 850/900/1800/1900	CDMA 800, GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat16 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 32, 66) TD-LTE (34, 38, 39, 40, 41)	LTE Cat16/13 VoLTE Global version: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 20, 28) TD-LTE (Bands 38, 39, 40) China version: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17) TD-LTE (Bands 34, 38, 39, 40, 41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE
📷 Camera
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Back camera (main camera)	(dual camera) 16 megapixels 20MP f/2.01/2.8"1.0µm	(triple camera) 48 megapixels 16MP ultrawide f/2.213mm1/3.0"1.0µmPDAF 12MP telephoto f/2.254mm1/3.6"1.0µmPDAF2x-optical-zoom
Main camera resolution	4608x3456 pixels	8000x6000 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 60 fps
Flash	Dual-LED flash	Dual-LED flash
Focal aperture	f/2.0 (aperture)	f/1.8 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/2.6" inches	1/2" inches
Pixel size	1.22µm pixel	0.8µm pixel
Autofocus	PDAF: phase detection autofocus	LDAF/PDAF: laser/phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Supported	Not supported
HDR	HDR photo on both cameras	HDR photo on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Front camera (secondary)	25 megapixels *Motorized pop-up camera (slider)	20 megapixels
Front camera resolution	5760x4320 pixels	5184x3840 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	f/2.0 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	0.9µm pixel
🔉 Sound and multimedia
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Loudspeaker	Mono sound (not stereo)	Supported
Active noise cancellation	2 microphones	2 microphones or more
Radio	Not supported	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, DivX, XviD	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	USB 2.0 Type-C, USB OTG On-The-Go
Audio output	Type-C reversible connector	Type-C jack with 3.5mm jack adapter
TV output	USB Type-C (reversible)	Not supported
Bluetooth	5.0 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS
NFC	Supported	Supported
Infrared port	Not supported	Supported
🧭 Sensors
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 3D Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3730 mAh	3300 mAh
Charger, watts	20W Wired fast charging VOOC 3.0	27W Wired fast charging
Inductive / wireless charging	Not supported	Qi wireless charging
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Bordeaux Red, Glacier Blue	• Colors: Piano Black, Lavender Violet, Ocean Blue • MIUI 10 • HDR10/DCI-P3 display • Sapphire glass camera cover • Quick Charge 4+ • Fast wireless charging 20W
☢️ Radiation rate
	Oppo Find X (128GB)	Xiaomi Mi 9 (128GB/8GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered