Samsung Galaxy S21 Ultra 5G vs Samsung Galaxy S23

Side-by-side specs and price comparison for buyers in Algeria.

Phone 1

Phone 2

Samsung

Samsung Galaxy S21 Ultra 5G

70,000DACheaper

Samsung

Samsung Galaxy S23

75,000DA

Quick Verdict

Who wins each category, side by side.

Better price

Samsung Galaxy S21 Ultra 5G

Faster chip

Even

Bigger battery

Samsung Galaxy S21 Ultra 5G

Faster charging

Even

Higher-resolution camera

Samsung Galaxy S21 Ultra 5G

Better display

Samsung Galaxy S21 Ultra 5G

Lighter body

Samsung Galaxy S23

Best value for money

Even

Full specs comparison

Display

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
Size (inches)	6.8	6.1
Panel Type	AMOLED	AMOLED
Resolution Height	3200	2340
Resolution Width	1440	1080
Refresh Rate	120	120
Peak Brightness	1500	1750
PPI	515	425
Glass Type	Corning Gorilla Glass Victus	Corning Gorilla Glass Victus 2
Screen-to-body	89.8	86.8

Platform

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
CPU	Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - InternationalOcta-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China	Octa-core (1x3.36 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)
GPU	Mali-G78 MP14 - InternationalAdreno 660 - USA/China	Adreno 740
Chipset Name	Exynos 2100 - InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm)	Snapdragon 8 Gen 2
Process (nm)	5	4
OS Name	Android	Android
UI Skin	One UI 6.1	One UI 6.1.1
OS Version	11	13

Benchmarks

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
Geekbench (Single-Core)	—	2,050
Geekbench (Multi-Core)	—	5,400
AnTuTu	—	1,500,000

Memory

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
Card Slot	No	No
Variants	128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM	128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM

Main Camera

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
Video	8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10 + , stereo sound rec., gyro-EIS	8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10 + , stereo sound rec., gyro-EIS
Features	Laser AF, LED flash, auto-HDR, panorama	LED flash, auto-HDR, panorama
Count	4	3
periscope telephoto	10 MP, f/4.9, 240mm, (periscope telephoto)	—
Telephoto	10 MP, f/2.4, 72mm, (telephoto)	10 MP, f/2.4, 70mm, (telephoto)
ultrawide	12 MP, f/2.2, 13mm, (ultrawide)	12 MP, f/2.2, 13mm, (ultrawide)
Wide	108 MP, f/1.8, 24mm, (wide)	50 MP, f/1.8, 24mm, (wide)

Selfie Camera

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
Video	4K@30/60fps, 1080p@30fps	4K@30/60fps, 1080p@30fps
Features	HDR	HDR, HDR10 +
Count	1	1
Lens	40 MP, f/2.2, 26mm, (wide)	12 MP, f/2.2, 26mm, (wide)

Battery

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
Capacity (mAh)	5000	3900
Chemistry	Li-Ion	Li-Ion
Wired Charging (W)	25	25
Wireless Charging (W)	15	15

Body

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
Build	Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame	Glass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frame
SIM	Nano-SIM + eSIMNano-SIM + Nano-SIM + eSIM (max 2 at a time)	Nano-SIM + eSIMNano-SIM + Nano-SIM + eSIM (max 2 at a time)
Height (mm)	165.1	146.3
Thickness (mm)	8.9	7.6
Weight (g)	227	168
Width (mm)	75.6	70.9

Launch

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
Announced	2021, January 14	2023, February 01
Status	Available. Released 2021, January 29	Available. Released 2023, February 17

Network

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
2G Bands	GSM 850, 900, 1800, 1900	GSM 850, 900, 1800, 1900
3G Bands	HSDPA 850, 900, 1700(AWS), 1900, 2100	HSDPA 850, 900, 1700(AWS), 1900, 2100
4G Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International
5G Bands	2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1	1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International
Speed	HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5 + Gbps DL)	HSPA, LTE (up to 7CA), 5G
Technology	GSM, CDMA, HSPA, EVDO, LTE, 5G	GSM, CDMA, HSPA, EVDO, LTE, 5G

Connectivity

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
Bluetooth	5.2	5.3
NFC	Yes	Yes
Positioning	GPS, GLONASS, BDS, GALILEO	GPS, GLONASS, BDS, GALILEO
Radio	FM radio (Snapdragon model only; market/operator dependent)	No
USB Type	Type-C	Type-C
USB Version	3.2	3.2
Wi-Fi	Wi-Fi 6E	Wi-Fi 6E

Sound

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
3.5mm Jack	No	No
Loudspeaker	Yes, with stereo speakers	Yes, with stereo speakers

Features

Spec	Samsung Galaxy S21 Ultra 5G	Samsung Galaxy S23
Sensors	Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer	Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer

Buying advice for Algeria

Both Samsung Galaxy S21 Ultra 5G and Samsung Galaxy S23 are sold in Algeria, but they fit different priorities.

Samsung Galaxy S21 Ultra 5G is 7% cheaper at 70,000 DZD versus 75,000 DZD for the Samsung Galaxy S23, leaving room for accessories or a longer screen-protection plan.

Samsung Galaxy S21 Ultra 5G packs a 5000 mAh battery, which translates to longer screen-on time when you are away from a charger.

Samsung Galaxy S21 Ultra 5G reaches a higher main-sensor resolution at 108 MP, which helps with crops and lower-light photos.

Above 60,000 DZD, prioritise screen quality, fast charging, and a clear software-update commitment.