Samsung Galaxy S21 Ultra vs Xiaomi Redmi Note 15 Pro Plus (12GB RAM + 256GB)

Here you can compare Samsung Galaxy S21 Ultra and Xiaomi Redmi Note 15 Pro Plus (12GB RA…. Comparing Samsung Galaxy S21 Ultra vs Xiaomi Redmi Note 15 Pro Plus (12GB RA… on Smartprix enables you to check their respective specs scores and unique features. It would potentially help you understand how Samsung Galaxy S21 Ultra stands against Xiaomi Redmi Note 15 Pro Plus (12GB RA… and which one should you buy The current lowest price found for Samsung Galaxy S21 Ultra is ₹47,990 and for Xiaomi Redmi Note 15 Pro Plus (12GB RA… is ₹41,749. The details of both of these products were last updated on Jun 10, 2026.

Specification	Samsung Galaxy S21 Ultra	Xiaomi Redmi Note 15 Pro Plus (12GB RA…
Rear Camera	108 MP ƒ/1.8 10 MP ƒ/4.9 (Telephoto) 10 MP ƒ/2.4 (Telephoto) 12 MP ƒ/2.2 (Ultra Wide)	200 MP ƒ/1.7 (Wide Angle) 23mm (wide), 1/1.4", 0.56µm, multi-directional PDAF, OIS 8 MP ƒ/2.2 (Ultra Wide) 15mm, 120˚ (ultrawide), 1/4.0", 1.12µm
Display	6.8 inches, 1440 x 3200 pixels, 120 Hz	6.83 inches, 1280 x 2772 pixels, 120 Hz
RAM	12 GB	12 GB
CPU	2.9 GHz, Octa Core Processor	2.7 GHz, Octa Core Processor
Battery	5000 mAh, Li-Po Battery	6500 mAh, Silicon-Carbon Battery Battery
Price	₹47,990	₹41,749

Samsung Galaxy S21 Ultra₹47,990

# 2

Xiaomi Redmi Note 15 Pro Plus (12GB RAM + 256GB)₹41,7492%

# 1

Add Product

Samsung Galaxy S21 Ultra₹47,990

# 2

Xiaomi Redmi Note 15 Pro Plus (12GB RAM + 256GB)₹41,7492%

# 1

Add Product

Add Another Product

Like
Comment
Share

Overview

Specs Score	77 / 100	80 / 100 Better Specs
Display Resolution	1440 x 3200 pixels Better Resolution	1280 x 2772 pixels
CPU Clock Speed	2.9 GHz Faster Clock Speed	2.7 GHz
Rear Camera	108 MP Quad	200 MP + 8 MP Dual Better Camera Resolution
Front Camera	40 MP Better Front Camera Resolution	32 MP
Weight	227 g	207 g Lighter
Thickness	8.9 mm	8.2 mm Slimmer
Battery	5000 mAh	6500 mAh Bigger Battery
Unique Features	Wireless Charging No	No IR Blaster

General

Country of Origin		India
Model	Galaxy S21 Ultra 5G	2510ERA8BG
Sim Type	Dual Sim, GSM+GSM	Dual Sim, GSM+GSM
Dual Sim	Yes	Yes
Sim Size	Nano+Nano SIM	nano SIM + nano SIM or nano SIM + eSIM
Device Type	Smartphone	Smartphone
OS Updates		4 years
Security Updates		6 years
Release Date	January 14, 2021	December 18, 2025
In The Box		REDMI Note 15 Pro+ 5G/ Adapter/ USB Type-C Cable/ SIM Eject Tool/ Protective Case/ Quick Start Guide/ Warranty Card

Design

Dimensions	75.6 x 165.1 x 8.9 mm	78.3 x 163.3 x 8.2 mm
Weight	227 g	207 g
Colors		Mirage Blue, Coffee Mocha, Carbon Black

Display

Type	Color Dynamic AMOLED 2X (16M Colors)	Color AMOLED Screen (1B Colors)
Touch	Yes	Yes
Size	6.8 inches, 1440 x 3200 pixels, 120 Hz	6.83 inches, 1280 x 2772 pixels, 120 Hz
Aspect Ratio	20:9	20.1:9
PPI	~ 515 PPI	~ 447 PPI
Screen to Body Ratio	~ 89.8%	~ 89.6%
Glass Type	Corning Gorilla Glass Victus	Corning Gorilla Glass Victus 2
Brightness		3200 nits Peak, HBM 1800 nits
HDR Support	Yes, HDR10+	Yes, HDR10+, Dolby Vision
Features	Always-on Display, HDR10+, Curved Display	3840Hz PWM, HDR10+, Dolby Vision, Colour depth: 12bit Contrast ratio: 8,000,000:1 DCI- P3 wide color gamut
Notch	Yes, Punch Hole	Yes, Punch Hole
Curved Display	Yes

Memory

RAM	12 GB	12 GB
Storage	256 GB	256 GB
Storage Type	UFS 3.1	UFS 2.2
Card Slot		No

Connectivity

GPRS	Yes	Yes
EDGE	Yes	Yes
3G	Yes	Yes
4G	Yes	Yes
5G	Yes	Yes
5G Bands		SA: n1/3/5/8/28/38/40/41/77/78, NSA: n1/3/5/8/28/40/41/77/78
VoLTE	Yes, Dual Stand-By	Yes, Dual Stand-By
Wifi	Yes, with wifi-hotspot	Yes, with wifi-hotspot
Wifi Version		Wi-Fi: Wi-Fi 6/6E/Wi-Fi 5/Wi-Fi 4/Wi-Fi Direct Supports 2.4GHz Wi-Fi \| 5GHz Wi-Fi Supports 2x2 MIMO
Bluetooth	Yes, v5.2, A2DP, LE	Yes, v5.4, A2DP, LE
USB	Yes, USB-C v3.2	Yes, USB-C v2.0
USB Features	USB on-the-go, USB Charging	USB on-the-go, USB Charging
IR Blaster		Yes

Performance

AnTuTu Score		1,053,798 (Total) (v11) 405,501 (CPU) 188,358 (GPU) 203,399 (Memory) 256,540 (UX)
AnTuTu Storage Score		85,008 Sequential Read: 1093 MB/s; Sequential Write: 1054 MB/s
Geekbench Score		3,250 (Multi Core) (v6) 1,250 (Single Core) 3,538 (OpenCL) 4,690 (Vulkan)
3DMark Score		1,104 (Wild Life Extreme) (6.61 FPS)

Extra

GPS	Yes, with A-GPS, GLONASS, BDS, GALILEO	GPS \| AGPS \| Glonass \| Beidou \| Galileo make wireless Down Wireless network \| Data network \| Sensor Assisted Positioning
Fingerprint Sensor	Yes, In Display	Yes, In Display
Face Unlock	Yes	Yes
Sensors	Accelerometer, Gyro, Proximity, Compass, Barometer	Proximity sensor \| Ambient light sensor \| Accelerometer \| Electronic compass \| IR blaster \| Gyroscope
3.5mm Headphone Jack	No	No
NFC	Yes	Yes
AI Features		Al Writing, Al Speech Recognition, Al Interpreter,Al Search, Al Dynamic Wallpapers, Al Creativity Assistant,and more. Circle to Search with Google, Google Gemini information.
Water Resistance	Yes, 1.5 m upto 30 min	Yes, 1.5 m upto 30 min
IP Rating	IP68	IP66 + IP68 + IP69 + IP69K
Dust Resistant	Yes	Yes
Extra Features		Xiaomi T1S Tuner, Xiaomi Offline Communication

Camera

Rear Camera	108 MP ƒ/1.8 10 MP ƒ/4.9 (Telephoto) 10 MP ƒ/2.4 (Telephoto) 12 MP ƒ/2.2 (Ultra Wide)	200 MP ƒ/1.7 (Wide Angle) 23mm (wide), 1/1.4", 0.56µm, multi-directional PDAF, OIS 8 MP ƒ/2.2 (Ultra Wide) 15mm, 120˚ (ultrawide), 1/4.0", 1.12µm
OIS	Yes	Yes
Auto Focus	Yes	Yes
Features	Auto-HDR, Panorama
Video Recording	8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD	4K @ 30 fps UHD, 1080p @ 60 fps FHD
Flash	Yes, LED	Yes, LED
Front Camera	40 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus	32 MP ƒ/2.2 (Wide Angle) Punch Hole
Front Video Recording	4K @ 30/60 fps UHD, 1080p @ 30 fps FHD	1080p @ 60 fps FHD

Technical

OS	Android v10	Android v15
Custom UI		Xiaomi HyperOS 2
Chipset	Samsung Exynos 2100	Qualcomm Snapdragon 7s Gen4
CPU	2.9 GHz, Octa Core Processor	2.7 GHz, Octa Core Processor
Core Details	1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55	1x2.7 GHz Cortex-A720 & 3x2.4 GHz Cortex-A720 & 4x1.8 GHz Cortex-A520
GPU	Mali-G78 MP14	Adreno 810
Java	No	No
Browser	Yes	Yes, supports HTML5

Multimedia

Email	Yes	Yes
Music	Yes	MP3, AMR, FLAC, APE
Video	Yes	MP4, M4V, MKV, XVID
FM Radio	No	No
Speaker Type		Dual Stereo
Audio Features		400% Volume Boost, Dolby Atmos \| Hi-Res
Document Reader	Yes	Yes

Battery

Type	Non-Removable Battery	Non-Removable Battery
Size	5000 mAh, Li-Po Battery	6500 mAh, Silicon-Carbon Battery Battery
Fast Charging	Yes, 25W Fast Charging	Yes, 100W Fast Charging
Wireless Charging	Yes, 15W
Reverse Charging	Yes, 4.5W	Yes, 22.5W

Discuss

Be the first to leave a comment.

Related News

Samsung Galaxy Z Flip 8 Leak Reveals A Snapdragon And Exynos Split

Samsung has been using different processors in the same phone for different markets for years. Take the Galaxy S26 series as an example. While the regular Galaxy S26 (review) and the Galaxy S26 Plus (review) …

The new ₹15,999 Samsung phone with a battery bigger than the S25 Ultra

Samsung just launched the Galaxy A07 5G in India, and it’s a clear sign that the company is shifting its budget strategy. While high-end flagships like the upcoming S26 Ultra often focus on peak performance a…

Samsung Galaxy Z Fold8 and Z Fold8 Ultra Dummy Units Leak in First Side-by-Side Photos

Fresh photos of Galaxy Z Fold8 and Galaxy Z Fold8 Ultra dummy units have surfaced online, giving us our first real-world comparison of Samsung’s upcoming foldables. The images were shared on Korean forums and…

Exclusive: OnePlus N Series Set to Disrupt the Sub-Rs 20,000 Market in India

OnePlus has consistently pushed the boundaries of premium and mid-range smartphones, but the brand is now ready to aggressively target the budget segment. In an exclusive scoop, we have learned that OnePlus i…