Customer support: Monday to Friday 9 - 18 Monday to Friday 9 - 18 +372 502 2230 [email protected]
12-month Warranty.
12-month Warranty.
Fast delivery
Fast delivery
Secure payment
Secure payment
Satisfied customers
Satisfied customers
Easy returns
Easy returns

Samsung Galaxy S21 Ultra 5G

Price range: 269 € through 459 €

Refurbished Samsung Galaxy S21 Ultra 5G combines a 6.8-inch Dynamic AMOLED 2X display and a 108 MP quad camera with 8K video support. The device has been technically inspected and comes with a 12-month warranty.

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Estimated delivery: 08.06.2026 - 10.06.2026
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: 269 € through 459 €
Description
Specification

Refurbished Samsung Galaxy S21 Ultra 5G

This smartphone is suitable for users who prefer a large and detailed display, a versatile camera system, and 5G connectivity. The Samsung Galaxy S21 Ultra 5G offers a spacious 6.8-inch Dynamic AMOLED 2X display, high-quality biometric unlocking options, and a strong feature set for everyday use.

  • Display: 6.8-inch Dynamic AMOLED 2X, 3200 x 1400 pixels
  • Camera: 108 MP main camera + four rear camera modules
  • Front camera: 40 MP with autofocus
  • Connectivity: 5G, Wi‑Fi 6, Bluetooth 5.2, NFC
  • Security: fingerprint reader and facial recognition
  • Battery: 5000 mAh + wireless charging

The large flat display is well suited for web browsing, watching videos, and using everyday apps. The OLED panel displays up to 16 million colours, and the high resolution helps keep the image clear both when reading text and consuming multimedia.

The phone has an octa-core processor and a system of four rear cameras that covers standard photos, wide-angle shots, and zoom needs. 8K video recording, stereo sound, a USB-C connection, and support for multiple satellite systems add practicality in everyday use.

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

General

Product Samsung Galaxy S21 Ultra 5G
Category Smartphone
Model Galaxy S21 Ultra 5G
Product form Bar
SIM card capability Dual SIM
SIM card type NanoSIM + eSIM
Mobile network generation 5G
Subscription type No subscription
Product color Black

Display

Display diagonal 17,3 cm (6.8")
Display shape Flat
Panel type OLED display
Display technology marketing name Dynamic AMOLED 2X
Display resolution 3200 x 1400 pikslit
Native aspect ratio 16:9
Display number of colors 16 million colors
Touchscreen type Capacitive
Touchscreen Yes

Processor

Processor cores 8
Processor frequency 2,9 GHz
Processor architecture 64-bit
Chipset Samsung Exynos 2100 / Qualcomm Snapdragon 888 (depends on region)

Memory

RAM capacity 12 GB
Internal storage capacity 256 GB
User memory 220,1 GB
Compatible memory cards Not supported
Memory card slot None

Rear camera

Rear camera type Penta camera
Number of camera modules 4
Rear camera resolution 108 MP
Second rear camera resolution 10 MP
Third rear camera resolution 12 MP
Fourth rear camera resolution 10 MP
Rear camera aperture number f/1.8
Second rear camera aperture number f/4.9
Third rear camera aperture number f/2.2
Fourth rear camera aperture number f/2.4

Rear camera features

Optical zoom 10x
Digital zoom 100x
Autofocus Yes
Rear camera flash Yes
Flash type LED
Video recording resolution (maximum) 7680 x 4320 pikslit
Maximum frame rate 24 fps
Video format 8K video

Front camera

Front camera resolution 40 MP
Front camera aperture number f/2.2
Front camera type Single camera
Front camera autofocus Yes
Video call Yes

Battery

Battery capacity 5000 mAh
Battery type Built-in lithium-ion battery
Wireless charging Yes
Talk time (4G) 41 h
Web browsing time (WiFi) 18 h
Web browsing time (4G) 18 h
Continuous audio playback 81 h
Continuous video playback time 22 h

Connectivity

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 5.2
NFC technology Yes
WiFi Direct Yes
MIMO Yes
USB port Yes
USB connector type USB Type-C
USB version 3.2 Gen 1 (3.1 Gen 1)

Mobile network

3G standards UMTS
4G standards LTE-TDD & LTE-FDD
Supported 3G frequencies 850, 900, 1900, 2100 MHz
Supported 4G bands 700, 800, 850, 900, 1800, 1900, 2100, 2300, 2500, 2600 MHz
Supported 5G bands 700, 850, 1800, 2100, 2600 MHz
5G support Yes
VoLTE support Yes

Navigation

GPS Yes
GPS (satellite) Yes
GLONASS system Yes
BeiDou Yes
Galileo Yes
Location services Multi-satellite system support

Audio

Built-in speakers Yes
Microphone Yes
3.5 mm headphone jack No
Audio playback Stereo
Continuous audio playback 81 h

Sensors

Proximity sensor Yes
Accelerometer Yes
Ambient light sensor Yes
Gyroscope Yes
Geomagnetic sensor Yes
Hall sensor Yes
Fingerprint reader Yes
Face recognition Yes

Software

Platform Android
Operating system Android
App store Google Play
SMS service Yes
Multimedia Messaging Service (MMS) Yes
E-mail Yes

Dimensions and weight

Width 75,6 mm
Height 8,9 mm
Depth 165,1 mm
Weight 227 g

Durability

Water resistance IP68
Dust resistance IP68
Body durability Dust- and water-resistant
Repairability index 8.2

Certificates

Specific Absorption Rate (SAR) head (EU) 0,714 W/kg
Specific Absorption Rate (SAR) body (EU) 1,58 W/kg
Regulatory compliance EU SAR
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Frequently asked questions

Does each device come with a charger?
Each device comes with a charging cable in the box. Smartphones and tablets also include a SIM-pin.
Battery capacity at least 80% — new battery if needed
All devices we sell have at least 80% battery capacity compared to a new device or battery. If the battery capacity is lower than 80%, we replace it with a new one. Therefore, all our batteries are in excellent condition.
Are all devices tested?

Yes. All our grade A, B and C devices undergo a thorough technical inspection at a certified testing and repair center in Estonia before being offered for sale.

The inspection includes, among other things:

  • Visual inspection of the device (display, casing, buttons, etc.),
  • Testing of key functions (touchscreen, cameras, microphone, speakers, charging, Wi-Fi, Bluetooth, etc.),
  • Checking the battery condition and charging functionality,
  • Updating the software and restoring factory settings where necessary,
  • Secure erasure of the previous user’s data in accordance with licensing and data protection requirements.

The testing and repair center follows international standards:

  • ISO 9001
  • ISO 14001
  • ISO 27001
  • ISO 45001

Only devices that pass all tests and meet our quality and safety requirements are offered for sale. The remaining devices are sent for servicing or removed from the product range.

Is there a warranty for the devices?
Yes, all our devices come with a 12-months warranty, noted in each product's description. If you encounter any issues, you can return the product within the warranty period. For full warranty terms, click here: [ Technocircle OÜ – Warranty Terms]
ESTO Hire Purchase – buy now, pay later!
ESTO Hire Purchase – buy now, pay later!

With ESTO hire purchase, you can pay for your purchase in installments. Simply select “ESTO Hire Purchase” as your payment method and apply quickly and easily during checkout. The decision is made in real time, and the entire process is fully digital.

  • Flexible payment schedule
  • Digital contract and signature
  • Approval in just seconds
Can I try the device in-store before buying?
Currently, we operate only online, so in-store testing isn’t available. However, we are committed to providing quality devices and are happy to offer more information to help you make an informed decision.

Contact us:
Email: [email protected]
Phone: +372 5022230

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.