Samsung Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB) vs Xiaomi 15 (China 512GB/12GB)

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Side by side comparison between Samsung Galaxy Note 20 Ultra 5G vs Xiaomi 15 phones, differences, pros, cons and full specifications. What's the better?

5/20/2025 6:04 PM, updated: 5/20/2025 6:20 PM

Compare Xiaomi 15 X Samsung Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB) 10Points

Specifications Compare Models Pictures

6.9"
AMOLED

1440x3088

108
MP

10mp

12GB
RAM

Octa-core

4500
mAh

(Non removable)

16Points Xiaomi 15 (China 512GB/12GB) Compare Samsung Galaxy Note 20 Ultra 5G X

Specifications Compare Models Pictures

6.36"
AMOLED

1200x2670

50
MP

32mp

12GB
RAM

Octa-core

5400
mAh

(Non removable)

What's the better phone? Xiaomi 15 (China 512GB/12GB)

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!

10 Advantages Samsung Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	vs	16 Advantages Xiaomi 15 (China 512GB/12GB)
+Until 1TB microSD, microSDXCAdvantage More external storage for files using memory cards	vs	Not supported
+8.1 millimeters (0.32 inches)4% Thinner	vs	8.4 millimeters (0.33 inches)
+Stainless steel body, glass front/backAdvantage More resistant material	vs	Aluminum body, glass front
+1440x3088 pixels39% Higher resolution screen	vs	1200x2670 pixels
+494 PPI7% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	460 PPI
+6.9"8% Larger screen	vs	6.36"
+(5G SA/NSA) 5000 Mbps67% Faster for surfing the internet and download files	vs	(5G Sub6) 3000 Mbps
+ANT+Advantage Sensors help you use the device	vs	Not supported
+UWB (Ultra Wideband)Advantage Sensors help you use the device	vs	Not supported
+DLNAAdvantage With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.	vs	Not supported
2.73GHz 64bit Octa-core (7nm)	vs	+4.32GHz 64bit Octa-core (3nm)104% More powerful processor, you can open your applications faster
12GB LPDDR5	vs	+12GB LPDDR5XAdvantage This RAM type is better and more efficient.
UFS 3.0	vs	+UFS 4.0Advantage Fastest write and read storage.
208 grams (7.28 ounces)	vs	+192 grams (6.72 ounces)8% Lighter
16 million	vs	+68 billion4249 times More colors on the screen is better quality images and videos
(triple camera) 108MP + 12MP + 12MP	vs	+(triple camera) 50MP + 50MP + 50MP14% Higher resolution main camera
LED flash	vs	+Dual-LED flashAdvantage The Dual-LED flash helps in dark places or in low light
1/1.33" inches	vs	+1/1.31" inches2% The larger sensor camera lets you take photos with better depth.
f/1.8 (aperture)	vs	+f/1.6 (aperture)13% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 10MP	vs	+(front) 32MP2 times Higher resolution secondary camera to take pictures and selfies
Android 13	vs	+Android 15Advantage Android 15 is newer and safer
4500 mAh	vs	+5400 mAh20% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
25W	vs	+90W3 times 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.
2 slots (Dual-SIM) (hybrid slot/shares the same microSD slot)	vs	+2 slots (Dual-SIM) + e-SIM (Eletronic)Advantage You can have more mobile carriers/operators on the same device.
802.11 a/b/g/n/ac/ax [wifi6]	vs	+802.11 a/b/g/n/ac/ax/be [wifi7/6E/6]Advantage WiFi 802.11 a/b/g/n/ac/ax/be [wifi7/6E/6] is newer and faster
5.0 + A2DP/LE	vs	+6.0 + A2DP/LEAdvantage Bluetooth 6.0 + A2DP/LE is newer and faster

36 Common items in both devices

512GB (458GB available)

Dynamic AMOLED / LTPO AMOLED

HDR10+ / Dolby Vision/HDR10+

120Hz

Digital and optical zoom

PDAF: phase detection autofocus on both cameras / PDAF: phase detection autofocus

OIS: Optical stabilization

+29 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
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Change model		Choose the model
Model	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Other model names	Galaxy Note20 Ultra SM-N986B/Dual-SIM (Exynos)	Xiaomi 15 24129PN74C
Country or region available	(Europe), (Global, International)	China
Brand	Samsung	Xiaomi
Release date	8/21/2020, Announced: 8/5/2020	10/29/2024
Depth	8.1 millimeters (0.32 inches)	8.4 millimeters (0.33 inches)
Size (width x height)	77.2 x 164.8 millimeters (3.04 x 6.49 in)	71.2 x 152.3 millimeters (2.8 x 6 in)
Weight	208 grams (7.28 ounces)	192 grams (6.72 ounces)
Build, materials	Stainless steel body, glass front/back	Aluminum body, glass front
Protection against water and others	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant	IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant
📲 Display
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Display type	Dynamic AMOLED	LTPO AMOLED
Screen size	6.9" inches	6.36" inches
Screen-to-body ratio	~92.5% (screen-to-body ratio)	~90% (screen-to-body ratio)
Display resolution	1440x3088 pixels	1200x2670 pixels (20:9)
Touchscreen	Capacitive Multitouch 10-points	Capacitive Multitouch 10-points
Pixel density (dot pitch)	494 PPI	460 PPI
Colors	16 million	68 billion
Scratch-resistant glass	Gorilla Glass Victus	Dragon Crystal Glass
Refresh rate	120Hz	120Hz
Display features	1500nits[peak] HDR10+ Always-On Display 120Hz@FHD 60Hz@QHD	3200nits[peak] Dolby Vision/HDR10+ Touch Sampling Rate: 300Hz
🤖 Operating System
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
System version	Android 10	Android 15
Firmware update	Android 13	feature not registered
User Interface	One UI 2.5 / 3.1 / 4.1 / 5.0	HyperOS 2
⚙️ Processor
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Chipset	64bit: Samsung Exynos 990 (7nm)	64bit: Qualcomm Snapdragon 8 Elite (SM8750-AB) (3nm)
CPU	Octa-core, 3 processors: 2x 2.73GHz Mongoose M5 (Dual-core) 2x 2.5GHz ARM Cortex-A76 (Dual-core) 4x 2GHz ARM Cortex-A55 (Quad-core)	Octa-core, 2 processors: 2x 4.32GHz Oryon V2 Phoenix L (Dual-core) 6x 3.53GHz Oryon V2 Phoenix M (Hexa-core)
GPU graphical controller	ARM Mali-G77 MP11 (800MHz)	Qualcomm Adreno 830 (1100MHz)
Performance (benchmark)	AnTuTu: 508760 (v8) Geekbench: 2603 (v5.1) GFXBench: 42fps (ES 3.1 onscreen)	AnTuTu: 2534643 (v10) Geekbench: 9419 (v6)
💽 Memory and storage
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
RAM memory	12GB LPDDR5	12GB LPDDR5X
Internal storage	512GB (458GB available) UFS 3.0	512GB (458GB available) UFS 4.0
External storage	Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot)	Not supported
📶 Mobile networks
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot)	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) + e-SIM
Maximum Download / Upload	5000/1024 Mbps	3000/1024 Mbps
Network technology	2G, 3G, 4G, 5G	2G, 3G, 4G, 5G
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	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 66) TD-LTE (34, 38, 39, 40, 41, 42, 48) VoLTE
Primary 5G network	SA/NSA/Sub6 (1, 3, 5, 7, 8, 28, 40, 77, 78)	SA/NSA/Sub6 (1, 2, 3, 5, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 80, 81, 83, 84, 89)
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	UMTS 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Secondary 4G network	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE	LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 66) TD-LTE (34, 38, 39, 40, 41, 42, 48) VoLTE
Secondary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6
📷 Camera
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Back camera (main camera)	(triple camera) 108 megapixels 12MP periscope telephoto f/3.0120mm1.0µmPDAFOIS5x-optical-zoom50x-hybrid-zoom 12MP ultrawide f/2.2120°13mm1/2.55"1.4µm	(triple camera) 50 megapixels 50MP telephoto f/2.060mm1/2.76"0.64µmPDAFOIS2.6x-optical-zoom 50MP ultrawide f/2.214mm115°1/2.76"0.64µm
Main camera resolution	12000x9000 pixels	8160x6120 pixels
Video recording (primary)	8K UHD (7680x4320) 24 fps	8K UHD (7680x4320) 30 fps
Flash	LED flash	Dual-LED flash
Focal aperture	f/1.8 (aperture)	f/1.6 (aperture)
Focal length	26mm (lens)	23mm (lens)
Sensor size	1/1.33" inches	1/1.31" inches
Pixel size	0.8µm pixel	1.2µm pixel
Autofocus	PDAF: phase detection autofocus on both cameras	PDAF: phase detection autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	OIS: Optical stabilization
Zoom	Digital and optical zoom	Digital and optical zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Supported	Supported
HDR	HDR photo/video on both cameras	HDR photo/video on both cameras
Camera extras	4K@60fps 1080p@240fps 720p@960fps	8K@24/30fps (HDR) 4K@24/30/60fps (HDR10+, 10-bit Dolby Vision HDR, 10-bit LOG) 1080p@30/60/120/240/960fps 720p@1920fps Leica Summilux
📸 Front camera
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Front camera (secondary)	10 megapixels	32 megapixels
Front camera resolution	3872x2592 pixels	6528x4896 pixels
Video recording (secondary)	4K UHD (3840x2160)	4K UHD (3840x2160)
Front flash	Not supported	Not supported
Focal aperture	f/2.2 (aperture)	f/2.0 (aperture)
Focal length	26mm (lens)	21mm (lens)
Sensor size	1/3.2" inches	1/3.14" inches
Pixel size	1.22µm pixel	0.7µm pixel
🔉 Sound and multimedia
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Loudspeaker	Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG	Stereo sound 24-bit/192kHz Dolby Atmos Hi-Res
Active noise cancellation	2 microphones or more	4 microphones
Radio	Not supported	Not supported
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, XviD, MKV	MP4, H.265, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
USB	USB 3.2 Type-C, USB OTG On-The-Go	USB 3.2 Type-C, USB OTG On-The-Go
Audio output	Type-C reversible connector	Type-C reversible connector
TV output	USB Type-C (reversible)	USB Type-C (reversible)
Bluetooth	5.0 + A2DP/LE	6.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot	802.11 a/b/g/n/ac/ax/be [wifi7/6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO WiFi Direct, hotspot
DLNA	Supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou	A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS
NFC	Supported	Supported
Infrared port	Not supported	Supported
🧭 Sensors
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Sensors	Accelerometer Ambient light sensor ANT+ Barometer Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband)	Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Battery type	Li-Ion: lithium-ion (Non removable)	Li-Si: lithium-silicon (Non removable)
Battery capacity	4500 mAh	5400 mAh
Charger, watts	25W Wired fast charging USB Power Delivery 3.0	90W Wired fast charging Reverse charging by cable Quick Charge 3+ USB Power Delivery 3.0
Inductive / wireless charging	15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging	50W Qi Wireless charging (Qi/WPC) 10W Reverse wireless charging
Talk time autonomy	feature not registered	feature not registered
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
Call control	Voice dialing, Voice recorder, Voice commands	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: Mystic Black, Mystic Bronze, Mystic White • Ultrasonic fingerprint sensor • Bixby • Samsung Wireless DeX • Samsung Pay (MST, NFC) • Stylus pen (Bluetooth integration)	• Colors: Black, White, Green, Lilac, Liquid Silver • Xiaomi HyperAI
☢️ Radiation rate
	Galaxy Note 20 Ultra 5G (SM-N986B/DS 512GB)	Xiaomi 15 (China 512GB/12GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	0.338W/kg (head), 1.47W/kg (body)	0.99W/kg (head), 1W/kg (body)