Oppo Find X (128GB) vs Xiaomi Poco X3 Pro (J20SI 128GB)

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Side by side comparison between Oppo Find X vs Xiaomi Poco X3 Pro phones, differences, pros, cons and full specifications. What's the better?

6/26/2021 10:26 AM, updated: 6/9/2025 11:20 PM

Compare Xiaomi Poco X3 Pro X Oppo Find X (128GB) 11Points

Specifications Compare Models Pictures

6.42"
AMOLED

1080x2340

16
MP

25mp

8GB
RAM

Octa-core

3730
mAh

(Non removable)

18Points Xiaomi Poco X3 Pro (J20SI 128GB) Compare Oppo Find X X

Specifications Compare Models Pictures

6.67"
IPS

1080x2400

48
MP

20mp

6GB
RAM

Octa-core

5160
mAh

(Non removable)

What's the better phone? Xiaomi Poco X3 Pro (J20SI 128GB)

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!

11 Advantages Oppo Find X (128GB)	vs	18 Advantages Xiaomi Poco X3 Pro (J20SI 128GB)
+8GB LPDDR4X33% More RAM memory. Typically more responsive and better for multitasking.	vs	6GB LPDDR4X
+186 grams (6.51 ounces)16% Lighter	vs	215 grams (7.53 ounces)
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+AMOLEDAdvantage AMOLED display is brighter and more vivid	vs	TFT IPS LCD
+401 PPI2% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	395 PPI
+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
+(4G LTE-A) 1024 Mbps28% Faster for surfing the internet and download files	vs	(4G LTE-A) 800 Mbps
+Face unlock 3DAdvantage Sensors help you use the device	vs	Face unlock 2D
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
2.8GHz 64bit Octa-core (10nm)	vs	+2.96GHz 64bit Octa-core (7nm)8% More powerful processor, you can open your applications faster
UFS 2.1	vs	+UFS 3.1Advantage Fastest write and read storage.
Not supported	vs	+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards
Not supported	vs	+HDR10Advantage The HDR10 display provides vibrant colors and more details
60Hz	vs	+120Hz100% The display reproduces more frames per second because the frequency (Hertz) is higher, improves fluidity and tires your eyes less.
1080x2340 pixels	vs	+1080x2400 pixels3% Higher resolution screen
6.42"	vs	+6.67"4% Larger screen
(dual camera) 16MP + 20MP	vs	+(quad camera) 48MP + 8MP + 2MP + 2MP67% Higher resolution main camera
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.
Android 10	vs	+Android 13Advantage Android 13 is newer and safer
Not supported	vs	+Fingerprint sensor (side-mounted)Advantage Sensors help you use the device
3730 mAh	vs	+5160 mAh38% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
20W	vs	+33W65% 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.
Mono sound (not stereo)	vs	+Stereo sound with dual speakersAdvantage Better sound quality for listening to music or clearer hands-free calls
Type-C reversible connector	vs	+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores
Not supported	vs	+FMAdvantage The radio lets you listen to your songs and sports in general
Not supported	vs	+IP53 certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

29 Common items in both devices

128GB (110GB available) / 128GB (106GB available)

9.4 millimeters (0.37 inches)

16 million

Dual-LED flash

Only digital zoom

PDAF: phase detection autofocus

HDR photo on both cameras

+22 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 Poco X3 Pro (J20SI 128GB)
Change model		Choose the model
Model	Find X (128GB)	Poco X3 Pro (J20SI 128GB)
Other model names	BBK Oppo Find X PAFM00, PAFT00	POCO X3 Pro M2102J20SI (128GB+6GB RAM)
Country or region available	(Global, International), China, Hong Kong	India
Brand	Oppo	Xiaomi
Release date	7/1/2018	3/24/2021, Announced: 3/22/2021
Depth	9.4 millimeters (0.37 inches)	9.4 millimeters (0.37 inches)
Size (width x height)	74.2 x 156.7 millimeters (2.92 x 6.17 in)	76.8 x 165.3 millimeters (3.02 x 6.51 in)
Weight	186 grams (6.51 ounces)	215 grams (7.53 ounces)
Build, materials	Aluminum frame, glass front/back Back: Gorilla Glass 5	Plastic body, glass front
Protection against water and others	Not supported	IP53 certified: protection against dust and splashing
📲 Display
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
Display type	AMOLED	TFT IPS LCD
Screen size	6.42" inches	6.67" inches
Screen-to-body ratio	~87% (screen-to-body ratio)	~84.6% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	1080x2400 pixels (20:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	401 PPI	395 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 5	Gorilla Glass 6
Refresh rate	60Hz	120Hz
Display features	Not supported	450nits[typ] HDR10
🤖 Operating System
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
System version	Android 8.1 Oreo	Android 11
Firmware update	Android 10	Android 13
User Interface	ColorOS 5.1 / 7.0	MIUI 12.5 / 13 / 14
⚙️ Processor
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
Chipset	64bit: Qualcomm Snapdragon 845 (SDM845) (10nm)	64bit: Qualcomm Snapdragon 860 (SM8150-AC) (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 2.96GHz Kryo 485 Gold (Single-core) 3x 2.42GHz Kryo 485 Gold (Triple-core) 4x 1.78GHz Kryo 485 Silver (Quad-core)
GPU graphical controller	Qualcomm Adreno 630 (710MHz)	Qualcomm Adreno 640 (250-672MHz)
Performance (benchmark)	feature not registered	AnTuTu: 483527 (v8) Geekbench: 2574 (v5.1) GFXBench: 38fps (ES 3.1 onscreen)
💽 Memory and storage
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
RAM memory	8GB LPDDR4X	6GB LPDDR4X
Internal storage	128GB (110GB available) UFS 2.1	128GB (106GB available) UFS 3.1
External storage	Not supported	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)
📶 Mobile networks
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) nano-SIM (4FF)
Maximum Download / Upload	1024/150 Mbps	800/150 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	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100	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 Cat15/13 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 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, UMTS, 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	UMTS 850/900/1700/1900/2100
Secondary 4G network	Not supported	LTE Cat15/13 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41)
Secondary data network	GPRS, EDGE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
📷 Camera
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
Back camera (main camera)	(dual camera) 16 megapixels 20MP f/2.01/2.8"1.0µm	(quad camera) 48 megapixels 8MP ultrawide f/2.2119°1.0µm 2MP macro f/2.4 2MP depth f/2.4
Main camera resolution	4608x3456 pixels	8000x6000 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	4K UHD (3840x2160) 30 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	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital 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	1080p@960fps
📸 Front camera
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
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/2.2 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	1/3.4" inches
Pixel size	feature not registered	0.8µm pixel
🔉 Sound and multimedia
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
Loudspeaker	Mono sound (not stereo)	Stereo sound with dual speakers
Active noise cancellation	2 microphones	2 microphones or more
Radio	Not supported	FM
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 Poco X3 Pro (J20SI 128GB)
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	3.5mm jack
TV output	USB Type-C (reversible)	USB Type-C (reversible)
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	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou
NFC	Supported	Not supported
Infrared port	Not supported	Supported
🧭 Sensors
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 3D Gyroscope Hall effect Proximity sensor	Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
Battery type	LiPo: li-ion polymer (Non removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3730 mAh	5160 mAh
Charger, watts	20W Wired fast charging VOOC 3.0	33W Wired fast charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
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: Phantom Black, Frost Blue, Metal Bronze • Silicone Case included • Cooling up to 6 °C • LiquidCool 1.0 Plus
☢️ Radiation rate
	Oppo Find X (128GB)	Xiaomi Poco X3 Pro (J20SI 128GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.99W/kg (head), 0.67W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.57W/kg (head), 0.9W/kg (body)