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12-month Warranty.
12-month Warranty.
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Easy returns

Samsung Galaxy S21 5G

Price range: 209 € through 309 €
Refurbished Samsung Galaxy S21 5G offers a 6.2-inch Dynamic AMOLED 2X display with a 120 Hz refresh rate and a triple camera with a 64 MP telephoto lens and 8K video recording. The device has been technically inspected and comes with a 12-month warra...
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Ainult 14 toode järel
Estimated delivery: 15.06.2026 - 16.06.2026
12-months warranty: All our devices come with a 12-month warranty for your peace of mind.
14-day return policy: If the product does not match its description, we will gladly accept a return.
This product is sold under the VAT margin scheme (KMS § 41)

Professionally inspected by Technocircle 🇪🇪

Google logo 4.9 stars (33 Reviews)
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Price range: 209 € through 309 €
Description
Specification

Refurbished Samsung Galaxy S21 5G

The Samsung Galaxy S21 5G is a smartphone with a more compact body for users who want a smooth display, a versatile camera system, and 5G connectivity for everyday use. This model is well suited for calls, messages, web browsing, watching media, and using standard apps.

  • Display: 6.2-inch Dynamic AMOLED 2X + 120 Hz
  • Processor: Exynos 2100
  • Camera: triple rear camera + 12 MP main camera and 3x optical zoom
  • Connectivity: 5G, Wi‑Fi 6, NFC
  • Security: under-display fingerprint reader + face recognition

The 6.2-inch flat OLED display with a resolution of 2400 x 1080 pixels delivers a clear picture, and the adaptive refresh rate of up to 120 Hz makes scrolling and navigating menus smooth. HDR10+ support, Always-On Display, stereo speakers, and Dolby Atmos create a pleasant experience when watching video and other media.

The triple camera system includes an ultra-wide, wide, and telephoto camera to cover different shooting situations. Optical image stabilization, Night mode, and up to 8K video recording provide flexibility for both photos and videos, while the 4000 mAh battery supports fast charging, wireless charging, and Wireless Power Share.

Included: Samsung Galaxy S21 5G, USB-C cable, SIM pin

General

Product category Smartphone
Model Samsung Galaxy S21 5G
Product form Bar
Subscription type Without contract
Product color Gray
Color name Phantom Gray
Repairability index 8.2
Housing material Aluminum frame and plastic back
Fingerprint reader location Under the display
Biometric authentication Fingerprint and face recognition

Display

Display diagonal 15,8 cm (6.2")
Display shape Flat
Display technology marketing name Dynamic AMOLED 2X
Panel type OLED display
Display resolution 2400 x 1080 pixels
Aspect ratio 20:9
Number of display colors 16 million colors
Maximum refresh rate 120 Hz
HDR supported Yes
HDR technology HDR10 Plus
Touchscreen type Capacitive
Pixel density 421 ppi
Display protection Corning Gorilla Glass Victus
Rounded display corners Yes
Display features Always-On Display, adaptive refresh rate

Processor

Processor family Samsung Exynos
Processor model 2100
Number of processor cores 8
Maximum processor frequency 2,9 GHz
Processor architecture 64-bit
Manufacturing process 5 nm
Performance cores 1x Cortex-X1 + 3x Cortex-A78
Power-efficient cores 4x Cortex-A55
Graphics processor Mali-G78 MP14
AI accelerator Integrated NPU

Memory

RAM type LPDDR5
Internal storage 128 GB
Internal storage type UFS 3.1
Memory card support No
USB mass storage Yes
Available user memory Depends on software and region

Rear camera

Rear camera type Triple camera
Main camera resolution 12 MP
Main camera aperture f/2,2
Main camera pixel size 1,4 µm
Main camera field of view 120°
Second rear camera resolution 12 MP
Second rear camera aperture f/1,8
Second rear camera pixel size 1,8 µm
Second rear camera field of view 79°
Third rear camera resolution 64 MP
Third rear camera aperture f/2,0
Third rear camera pixel size 0,8 µm
Third rear camera field of view 76°
Optical zoom 3x
Digital zoom 30x
Autofocus Yes
Optical image stabilization Yes
Video stabilizer Yes
Rear camera flash LED flash
Geotagging Yes
Burst mode Yes
Timer Yes
Night mode Yes
Maximum video recording resolution 7680 x 4320 pixels
Resolution and frame rate 1280x720@30fps, 1280x720@960fps, 1920x1080@240fps, 1920x1080@30fps, 1920x1080@60fps, 3840x2160@30fps, 3840x2160@60fps
Video recording modes 720p, 1080p, 2160p, 4320p

Front camera

Front camera resolution 10 MP
Front camera aperture f/2,2
Front camera autofocus Yes
Front camera video recording Up to 3840 x 2160 pixels
Front camera HDR support Yes
Front camera location Centered hole-punch at the top of the display

Battery

Battery capacity 4000 mAh
Removable battery No
Battery type Lithium-ion
Fast charging Yes
Wired charging Up to 25 W
Wireless charging Yes
Wireless charging power Up to 15 W
Wireless Power Share Yes
Reverse charging Yes
Charging connector USB Type-C

Connectivity

Mobile network generation 5G
SIM card capability Dual SIM
SIM card type NanoSIM + eSIM
3G standards HSDPA, HSPA+, HSUPA, UMTS
4G standards LTE
5G support Yes
VoLTE support Yes
WiFi Yes
WiFi standards 802.11a, 802.11b, 802.11g, Wi‑Fi 4 (802.11n), Wi‑Fi 5 (802.11ac), Wi‑Fi 6 (802.11ax)
Bluetooth Yes
Bluetooth version 5.0
NFC Yes
Tethering (modem mode) Yes
WiFi Direct Yes
USB port Yes
USB connector type USB Type-C
USB version 3.2 Gen 1 (3.1 Gen 1)
Headphone connectivity USB Type-C
USB On-The-Go support Yes
GPS Yes
GLONASS Yes
BeiDou Yes
Galileo Yes
WiFi positioning Yes

Audio

Speakers Stereo
Audio system Dolby Atmos
Speakerphone Yes
Number of microphones Multiple integrated microphones
3.5 mm headphone jack No
Supported audio formats 3GA, AAC, AMR, APE, AWB, DFF, DSF, FLAC, IMY, M4A, Mid, MIDI, MP3, MXMF, OGA, OGG, OTA, RTTTL, RTX, WAV, WMA, XMF
Supported video formats 3G2, 3GP, ASF, AVI, FLV, M4V, MKV, MP4, WEBM, WMV
Supported video modes 720p, 1080p, 2160p, 4320p

Sensors

Fingerprint reader Yes
Face recognition Yes
Iris recognition No
Proximity sensor Yes
Accelerometer Yes
Ambient light sensor Yes
Gyroscope Yes
Grip sensor Yes
Barometer Yes
Geomagnetic sensor Yes
Hall sensor Yes

Software

Platform Android
Installed operating system Android 11
User interface Samsung One UI 3.1
Application distribution platform Google Play
Google apps Google Maps, Google Play
Virtual assistant Samsung Bixby
SMS Yes
MMS Yes
E-mail Yes
Video call Yes
Vibration alert Yes

Dimensions and weight

Width 71,2 mm
Height 151,7 mm
Depth 7,9 mm
Weight 171 g
Body thickness 7,9 mm

Durability

Protection features Dust resistant, water resistant
IP code IP68
Water resistance level Up to 1,5 m in fresh water for up to 30 minutes
Screen protection Corning Gorilla Glass Victus
SAR at head (EU) 0,456 W/kg
SAR at body (EU) 1,509 W/kg
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Frequently asked questions

Are Technocircle devices new or used?

Technocircle sells tested pre-owned electronic devices. Our selection includes smartphones, tablets, laptops, smartwatches and other devices that are ready for their next user.

The devices are not new. Each product page shows the device’s cosmetic condition, technical specifications and other important product information.

Before a device is listed for sale, its technical functionality is checked. Only devices that are ready to use and meet our sales standards are offered for sale.

What condition are the devices and batteries in?

The cosmetic condition of each device is shown on the product page as a condition grade. The condition grade describes only the visual condition of the device, such as possible signs of use, scratches or wear. Technical functionality and battery condition are checked separately.

  • A+ – Excellent cosmetic condition. The device looks like new. Only very small micro-marks may be present, which are generally not visible from arm’s length during normal use.
  • A – Very good cosmetic condition. The device may have light signs of use or micro-scratches that are generally not visible during normal use.
  • B – Good cosmetic condition. The device may have some visible signs of use, scratches or minor wear when viewed from arm’s length during normal use. A good choice for customers looking for a strong balance between price and condition.
  • C+ – More visible signs of use. The body or back cover may have deeper scratches, dents or wear marks. The device is technically tested and fully functional.

The screens of all devices listed for sale are checked, intact and suitable for normal use. The screen has no cracks or damage that would prevent normal use. Depending on the condition grade, the screen may have micro-marks or scratches, but no scratch or sign of use may interfere with normal use of the device.

Signs of use are cosmetic and do not affect normal use of the device. The exact appearance may vary slightly between devices within the same condition grade.

The battery capacity of smartphones and tablets is at least 80%. If a battery does not meet our sales standard, the device is not sold in that condition or the battery is replaced before sale.

For laptops, battery condition information is shown separately on the product page.

Because the battery is a consumable component in a used device, actual battery life depends on the device model, age, usage habits and settings.

Does the device come with a charging cable or charger?

The included charging accessories depend on the device type. Below you can see what is included with each type of device.

Smartphones: the device always comes with a compatible charging cable and a SIM eject tool. A wall adapter is not included.

Tablets: the device always comes with a compatible charging cable. If the tablet supports LTE, a SIM eject tool is also included. A wall adapter is not included.

Laptops: laptops are sold without a charger. The laptop price does not include a charger, and a charger must be purchased separately if needed. You can view laptop chargers here.

Smartwatches: the device always comes with a compatible charging cable. A wall adapter is not included.

Do the devices come with a warranty?

Yes. All devices purchased from Technocircle come with a 12-month sales warranty.

The warranty covers technical faults and functional defects that are not caused by customer actions, incorrect use, drops, liquid damage, normal wear and tear or other exclusions listed in the warranty terms.

The battery is a consumable component in a used device and is covered by a separate 3-month sales warranty.

In the event of a warranty case, we will inspect the device and, where justified, repair it, replace it with an equivalent device or find another solution in accordance with the warranty terms.

More detailed information is available in our warranty terms.

Can I return the device?

Yes. When purchasing from our online store, you have the right to return the device within 14 days if it does not suit you.

The returned device must be in the same condition as when received, and all accessories included with the device must also be returned, such as the charging cable, SIM eject tool or any other included accessory.

Before returning the device, please remove all personal data, user accounts, passwords, SIM cards, memory cards and activation locks where possible.

To start a return, please follow the instructions on our returns page. More detailed terms are also available in our Refund and Returns Policy.

How quickly is the order shipped and delivered?

Orders are usually shipped on business days within 24 hours after payment has been received and the order has been confirmed.

For same-day dispatch, orders are locked on business days at 12:00. If the order is placed after 12:00, it will usually move to the next business day’s dispatch.

The warehouse does not operate on weekends or public holidays, so orders placed during these days will move to dispatch on the next business day.

In Estonia, orders usually arrive within 1–3 business days. Delivery times to Latvia and Lithuania are generally similar. For Finland and Sweden, delivery may take 1–2 business days longer, depending on the transport partner.

In Tartu and within the Tartu area, personal delivery of the device may be possible by agreement. To check this option, please contact us before placing the order.

The exact delivery time and available delivery options are shown in the cart and checkout before confirming the order.

Can I pay in instalments?

Yes. For eligible products, instalment payment options can be selected from the available payment methods at checkout.

The instalment terms, monthly payment amount and credit decision are shown in the payment partner’s environment before confirming the agreement.

The credit decision is made by the payment partner, and Technocircle cannot guarantee instalment payment approval in advance.

All available payment methods are shown in the cart and checkout before confirming the order.

Can I get additional photos or exact battery data for a specific device before buying?

All devices shown on our website have already been technically tested and are located in a logistics warehouse. Therefore, before purchase, we are not able to provide additional photos of a specific individual device, exact battery cycle counts or other device-specific information that is not shown on the product page.

The product page shows all important information available for the device: model, storage, colour, condition grade, technical specifications, battery information and other product-specific details.

We describe the cosmetic condition of devices cautiously so that customer expectations are realistic. The exact appearance may vary slightly between devices within the same condition grade.

We are also working on a photo library to provide customers with more real-life examples of different cosmetic grades in the future.

Does Technocircle have a physical store?

Technocircle operates as an online store, and we do not have a physical store or showroom where devices can be viewed before purchase.

The online store model helps us keep operating costs lower, because maintaining a physical store adds costs that are ultimately reflected in product prices. Our goal is to offer the best possible balance between price and quality.

All devices shown on the website have already been technically tested and are located in a logistics warehouse. Orders are placed through the online store, and the device is sent to the customer using the selected delivery method.

We are constantly working to make our online store as user-friendly, clear and trustworthy as possible. You can read more about Technocircle on our About us page.

Didn’t find an answer to your question?

If your question was not answered, please contact us by email or phone.

Email: [email protected]
Languages: Estonian, English, Russian, Latvian, Lithuanian, Finnish and Swedish

Phone: +372 502 2230
Languages: Estonian and English

Contact us
More than 5,000 units in A & B condition available
More than 5,000 units in A & B condition available
A diverse range of products for both private and business customers.
Easy returns.
Easy returns.
Customer service that ensures easy returns.
Satisfied customers.
Satisfied customers.
Our best reward is your satisfaction.