Samsung Galaxy S21 Ultra 5G (12GB RAM + 128GB) vs Samsung Galaxy S24 FE 5G

Here you can compare Samsung Galaxy S21 Ultra 5G (12GB RAM … and Samsung Galaxy S24 FE 5G. Comparing Samsung Galaxy S21 Ultra 5G (12GB RAM … vs Samsung Galaxy S24 FE 5G on Smartprix enables you to check their respective specs scores and unique features. It would potentially help you understand how Samsung Galaxy S21 Ultra 5G (12GB RAM … stands against Samsung Galaxy S24 FE 5G and which one should you buy The current lowest price found for Samsung Galaxy S21 Ultra 5G (12GB RAM … is ₹1,01,999 and for Samsung Galaxy S24 FE 5G is ₹31,999. The details of both of these products were last updated on Nov 16, 2025.

Specification	Samsung Galaxy S21 Ultra 5G (12GB RAM …	Samsung Galaxy S24 FE 5G
RAM	12 GB	8 GB
Internal Memory	128 GB	128 GB
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)	50 MP ƒ/1.8 (Wide Angle) 24mm, dual pixel PDAF, OIS 8 MP ƒ/2.4 (Telephoto) 75mm, PDAF, OIS, 3x optical zoom 12 MP ƒ/2.2 (Ultra Wide) : 123˚
OS	Android v10	Android v14
Display	6.8 inches, 1440 x 3200 pixels, 120 Hz	6.7 inches, 1080 x 2340 pixels, 120 Hz
Price	₹1,01,999	₹31,999

Samsung Galaxy S21 Ultra 5G (12GB RAM + 128GB)₹1,01,999

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Samsung Galaxy S24 FE 5G₹31,999

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Samsung Galaxy S21 Ultra 5G (12GB RAM + 128GB)₹1,01,999

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Samsung Galaxy S24 FE 5G₹31,999

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Overview

Specs Score	91 / 100 Better Specs	84 / 100
Display Resolution	1440 x 3200 pixels Better Resolution	1080 x 2340 pixels
RAM	12 GB More RAM	8 GB
CPU Clock Speed	2.9 GHz	3.11 GHz Faster Clock Speed
CPU Cores	Octa Core	Deca Core More CPU Cores
Rear Camera	108 MP Quad Better Camera Resolution	50 MP + 12 MP + 8 MP Triple
Front Camera	40 MP Better Front Camera Resolution	10 MP
Weight	227 g	213 g Lighter
Thickness	8.9 mm	8 mm Slimmer
Battery	5000 mAh Bigger Battery	4700 mAh

General

Model	Galaxy S21 Ultra 5G	SM-S721B, SM-S721B/DS, SM-S721U1, SM-S721U, SM-S721W, SM-S7210, SM-S721N, SM-S721BZKBINS
Sim Type	Dual Sim, GSM+GSM	Dual Sim, GSM+GSM
Dual Sim	Yes	Yes
Sim Size	Nano+Nano SIM	Nano+Nano SIM
Device Type	Smartphone	Smartphone
Release Date	January 14, 2021	September 26, 2024

Design

Dimensions	75.6 x 165.1 x 8.9 mm	77.3 x 162 x 8 mm
Weight	227 g	213 g
Bezel less		Yes
Colors		Blue, Graphite, Gray, Mint, Yellow

Display

Type	Color Dynamic AMOLED 2X (16M Colors)	Color AMOLED Screen (16M Colors)
Touch	Yes	Yes
Size	6.8 inches, 1440 x 3200 pixels, 120 Hz	6.7 inches, 1080 x 2340 pixels, 120 Hz
Aspect Ratio	20:9	19.5:9
PPI	~ 515 PPI	~ 385 PPI
Screen to Body Ratio	~ 89.8%	~ 88%
Glass Type	Corning Gorilla Glass Victus	Corning Gorilla Glass Victus+
Features	Always-on Display, HDR10+	HDR10+, 1900 nits (peak)
Notch	Yes, Punch Hole	Yes, Punch Hole

Memory

RAM	12 GB	8 GB
Storage	128 GB	128 GB
Storage Type	UFS 3.1
Card Slot		No

Connectivity

GPRS	Yes	Yes
EDGE	Yes	Yes
3G	Yes	Yes
4G	Yes	Yes
5G	Yes	Yes
VoLTE	Yes, Dual Stand-By	Yes, Dual Stand-By
Vo5G		Yes
Wifi	Yes, with wifi-hotspot	Yes, with wifi-hotspot
Bluetooth	Yes, v5.2, A2DP, LE	Yes, v5.3
USB	Yes, USB-C v3.2	Yes, USB-C
USB Features	USB on-the-go, USB Charging	USB on-the-go

Performance

AnTuTu Score		1,778,977 (Total) (v10) 410,969 (CPU) 729,849 (GPU) 343,647 (Memory) 294,512 (UX)
Geekbench Score		5,831 (Multi Core) (v6) 1,890 (Single Core) 12,910 (OpenCL) 15,700 (Vulkan)
3DMark Score		3,874 (Wild Life Extreme)
Camera Score		133 (DxOMark)
Speaker Score		81 (Very Good)
Battery Test Result		11.6 hours

Extra

GPS	Yes, with A-GPS, GLONASS, BDS, GALILEO	Yes with A-GPS, Glonass, Beidou, Galileo, NavIC, QZSS
Fingerprint Sensor	Yes, In Display	Yes, In Display
Face Unlock	Yes	Yes
Sensors	Accelerometer, Gyro, Proximity, Compass, Barometer	Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Virtual Proximity Sensing
3.5mm Headphone Jack	No	No
NFC	Yes	Yes
Water Resistance	Yes, 1.5 m upto 30 min	Yes, 1.5 m upto 30 min
IP Rating	IP68	IP68
Dust Resistant	Yes	Yes
Extra Features		SIM 1 + SIM 2/ SIM 1 + eSIM/ Dual eSIM

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)	50 MP ƒ/1.8 (Wide Angle) 24mm, dual pixel PDAF, OIS 8 MP ƒ/2.4 (Telephoto) 75mm, PDAF, OIS, 3x optical zoom 12 MP ƒ/2.2 (Ultra Wide) : 123˚
OIS	Yes	Yes
Auto Focus	Yes	Yes
Features	Auto-HDR, Panorama	HDR, Panorama
Video Recording	8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD	8K @ 24/30 fps UHD, 4K @ 30 fps UHD, 1080p @ 30 fps FHD, 720p @ 960 fps HD
Flash	Yes, LED	Yes, LED
Front Camera	40 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus	10 MP ƒ/2.4 (Wide Angle) 26mm Punch Hole
Front Video Recording	4K @ 30/60 fps UHD, 1080p @ 30 fps FHD	4K @ 60 fps UHD, 1080p @ 60 fps FHD

Technical

OS	Android v10	Android v14
Chipset	Samsung Exynos 2100	Samsung Exynos 2400e
CPU	2.9 GHz, Octa Core Processor	3.11 GHz, Deca Core Processor
Core Details	1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55	3.1GHz, 2.9GHz, 2.6GHz, 1.95GHz
GPU	Mali-G78 MP14	Xclipse 940
Java	No	No
Browser	Yes	Yes

Multimedia

Email	Yes	Yes
Music	Yes	Yes
Video	Yes	Yes
FM Radio	No	No
Document Reader	Yes	Yes

Battery

Type	Non-Removable Battery	Non-Removable Battery
Size	5000 mAh, Li-Po Battery	4700 mAh, Li-ion Battery
Fast Charging	Yes, 25W Fast Charging	Yes, 25W Fast Charging
Wireless Charging	Yes, 15W	Yes, 15W
Reverse Charging	Yes, 4.5W	Yes
Reverse Wireless Charging		Yes, 4.5W
Video Playback Time		28 hours
Music Playback Time		81 hours

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