Does the S21 Ultra support the S-Pen stylus?

Yes, the S21 Ultra is the first S series phone to support the S-Pen. Unlike the Note series, the phone does not have a slot for the pen, so you need to purchase the pen separately with a compatible case.

Does the phone have a memory card slot?

No, the S21 series was the first where Samsung removed the microSD card slot. It is recommended to choose a model with a larger storage capacity (256GB or 512GB) from the start.

How long will the battery last in 2026?

With a new battery, the device will last a full day with moderate use. As this is an older model, battery life depends on the specific device's wear and tear. 120Hz and QHD+ resolution consume battery faster.

Is the camera still competitive?

Yes, the 108MP main sensor and 10x optical periscope zoom are still better than most new mid-range phones. It's a great choice for an amateur photographer.

What is the latest Android version for this model?

The Samsung Galaxy S21 Ultra's last major update is Android 15 with One UI 7. After that, the device will receive security patches for a limited time.

Does the screen support 120Hz and QHD+ resolution simultaneously?

Yes, the S21 Ultra was the first Samsung phone to allow using the maximum resolution and 120Hz refresh rate simultaneously.

Samsung Galaxy S21 Ultra

2021Support ended

4.6(28 500) · Samsung Official, iFixit, GSMArena

Release year2021

Display6.8 inches

ChipExynos 2100

RAM8GB

Camera108MP

Support ended

Exynos 2100

2021Today2025

Current version

Android 15 (One UI 7.0)

Total support

4 years

Security patches

2026-01

Expert assessment: The device has reached the end of its official software support, but the hardware is still very capable.

Price from

224,7 €– 378,5 € -82%

New cost was 1249 €

20 in stock

Color

Storage

Condition

View offers (20)

12-month warranty·Delivery 2-4 days·14-day returns·Verified device

Pros and Cons

Strengths and weaknesses at a glance.

Why choose

Phenomenal display
10x optical zoom
S-Pen support
Premium build quality
Powerful RAM
Top-tier 5G

What to consider

No SD card slot
Large and heavy
Slow charging
Software support ending
Exynos processor

Specifications

Detailed Technical Info

Hardware and features in detail.

Screen size: 6.8"
Resolution: 1440 x 3200
Display type: Dynamic AMOLED 2X
Refresh rate: 120Hz
Max brightness: 1500 nits (peak)
Screen protection: Corning Gorilla Glass Victus

Display

Screen size: 6.8"
Resolution: 1440 x 3200
Display type: Dynamic AMOLED 2X
Refresh rate: 120Hz
Max brightness: 1500 nits (peak)
Screen protection: Corning Gorilla Glass Victus

Performance

Processor: Exynos 2100 (5 nm)
CPU cores: Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55)
GPU: Mali-G78 MP14
RAM: 8GB
AnTuTu score: 657150 (v8)

Camera

Main camera: 108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, OIS
Ultra-wide: 12 MP, f/2.2, 13mm, 120˚, Dual Pixel PDAF
Telephoto: 10 MP, f/2.4, 72mm, 3x optical zoom, OIS
Front camera: 40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
Video: 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS

Battery

Capacity: 5000 mAh
Charging speed: 25W wired, PD3.0
Wireless charging: Yes (15W, Qi)
Battery life: Up to 15 hours of web browsing

Connectivity

5G: Yes
Wi-Fi: Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Bluetooth: 5.2, A2DP, LE
NFC: Yes
USB: USB Type-C 3.2, OTG

Body & Dimensions

Dimensions: 165.1 x 75.6 x 8.9 mm
Weight: 227 g
Materials: Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
Water resistance: IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)

Condition Classes

All devices are fully tested and working.

Very Good (A)

from 325,9 €

In very good condition. Minimal signs of use.

Good (B)

from 282,4 €

May have a few micro-scratches on the screen, visible only from certain angles. Minimal signs of wear on the body. Battery 85-90%.

C+

Above Average (C+)

from 230,8 €

Visible scratches or dents on the screen or body. May have slight screen burn-in (ghosting). Battery at least 80%.

Acceptable (C)

from 224,7 €

Clearly visible signs of use. Best price.

Model characteristics

Common issues that may occur with Samsung Galaxy S21 Ultra.

Sudden screen shutdown

Critical

Display panel hardware defect or connection cable issue.

Repair ~250–350€

Camera focus noise

Minor

OIS (Optical Image Stabilisation) magnetic mechanism.

Overheating under load

Moderate

Power efficiency of the Exynos 2100 processor under heavy loads.

Battery capacity reduction

Moderate

Natural wear and tear of the lithium-ion battery over 4-5 years.

Repair ~65–90€

Greenfox check:Tested and clear

Repairs and Parts3/10 iFixit

Battery Replacement

Hard

65–90€Estimated cost

The battery is strongly glued, requiring screen or back glass removal and heating.

Screen Replacement

Hard

240–310€Estimated cost

The screen is glued to the frame. Transferring components is time-consuming.

Charging Port Repair

Medium

50–80€Estimated cost

On a separate daughterboard, replaceable without touching the motherboard.

Spare parts are widely available as both original and B-grade parts.

Environmental Impact

Buying a used device saves valuable resources.

This is equivalent to: Charging a smartphone every day for 11 years Driving from Tallinn to Tartu and back (370km)

CO₂ Saved

64 kg CO2e

Water Saved

14500 liters

E-Waste Avoided

227 grams

Reused

88%

Recycled

12%

Methodology: Fraunhofer Institute / Refurbed.com calculation model (2025)

Who Is This For?

This device is especially well-suited for these users.

Amateur photographer

Someone who wants the best possible zoom and image quality without paying €1300 for a new flagship.

10x optical zoom
108MP detailed mode
RAW shooting support

Value-conscious business user

Needs a large screen and S-Pen support for note-taking, but prefers to save money on the device purchase.

S-Pen compatibility
Large 6.8-inch display
Powerful multitasking

Tech-savvy student

Looking for the best hardware (RAM, display) at the lowest price for gaming and content consumption.

QHD+ 120Hz display
Affordable second-hand price
Powerful Mali graphics

tele2 Full5G and VoLTE support

telia Full5G and VoLTE support

Supports all Baltic and Finnish frequency bands, including n78 (3500 MHz) 5G network.

Comparisons With Other Models

How this model differs from the competition.

UpgradevsSamsung Galaxy S22 Ultra

The S22 Ultra offers an integrated S-Pen slot and a slightly faster processor, but the S21 Ultra's screen and camera are still at a very similar level for a fraction of the price in 2026.