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Galaxy S21+ 5G 128GB - Black - Unlocked

£172.80
before trade-in
Save £886.20


Free delivery by 1 May - 2 May
Express delivery by 30 Apr-1 May from £5.00

All devices are restored professionally based on a 25-point inspection

  • Buttons
  • SIM and/or memory card reader
  • Data deletion
  • Chargers and/or cables
  • Unlocking
  • GPS and/or positioning system
  • Cameras
  • External sensors
  • Biometric sensors
  • WiFi and Bluetooth
  • IMEI serial number
  • Oxidation
  • Flash and indicator lights
  • Mics and speakers
  • Input and output ports
  • Phone carrier
  • Battery health
  • Mechanical parts
  • Parts compatibility
  • Screen
  • Other features specific to this device

Ta-da!

Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G
FairStandard battery128 GBPhysical SIM + eSIMBlack
£172.80
before trade-in
Save £886.20

Proudly refurbished by Fonehouse Services Ltd (United Kingdom)

Free delivery by 1 May - 2 May
Express delivery by 30 Apr-1 May from £5.00

Comes with

Compatible charging cable

Galaxy S21+ 5G 128GB - Black - Unlocked: customer reviews

4.3/5

2,902 verified reviews in the last 24 months.

  • D

    David M.

    Purchased on the 20 February 2025

    Verified purchase
    5/5

    After buying a phone for a family member through Back Market and seeing the quality and service I bought one for myself. The phone arrived on time and well packaged. The device was exactly as described. This is my first refurbished phone...so far so good.👍

    Reviewed in United Kingdom on 26 March 2025

  • A

    Ann H.

    Purchased on the 15 September 2024

    Verified purchase
    4.6/5

    Purchased a Galaxy Samsung S21+ in purple listed as excellent. Must admit never having purchased refurbished before I was a little wary - opened box and it's beautiful it looks new 😁 If I have a concern it's the fact that I listen to audio books I hope the battery is as good as the phone - it seems to be🤞 My husband saw it and had instant phone jealousy😂 so I ordered an S21+ in black it has arrived and again looks like a new phone. Thank you Back Market

    Reviewed in United Kingdom on 1 April 2025

  • P

    Peter S.

    Purchased on the 27 November 2023

    Verified purchase
    5/5

    I was looking for a replacement of my old samsung s6, I had seen back market advertised & as I didn't want to splash out for a brand new phone I gave them a try.I was a bit apprehensive about buying a refurbished phone but I needn't have worried.Phone I ordered was samsung s21+ in excellent condition & that's exactly what it came in,not a mark on it & even has original protective film on front & back,battery was at 78% but soon charged up to 100%, very well packaged & excellent delivery.Thanks back market one very happy customer 👍 10/1

    Reviewed in United Kingdom on 26 March 2025

  • S

    Solomon K.

    Purchased on the 26 November 2023

    Verified purchase
    4.9/5

    Navigation on the site looking for a refurbished phone was really clear and well laid out. Nice not to see lots of drop down lists. Ordering the phone (Samsung S21+) was very straightforward and delivered very quick. The phone was well packaged and as I ordered the unit in Very condition, it was immaculate. It already had 70% charge, so I was able to this up and running, updated and tested without any issues. Thoroughly recommend backmarket, and will be ordering from them again. One suggestion though. Although you supply a USB cable, it would be helpful to provide a sim slot ejection pin. Luckily I had one, but not everyone will to hand.

    Reviewed in United Kingdom on 26 March 2025

  • L

    Lape A.

    Purchased on the 29 November 2024

    Verified purchase
    4.4/5

    I'm happy about my Samsung Galaxy 21+5G 256GB phone. Wow! I'm really enjoying it and my friends are jealous of it especially the protection accessories I bought to cover it. I couldn't see the screen protection with my phone happens?

    Reviewed in United Kingdom on 20 April 2025

  • F

    Frances G.

    Purchased on the 10 October 2024

    Verified purchase
    5/5

    Bought the Samsung S21+ for my son's birthday. Ordered it Friday arrived the very next day by 10 am! I did pay for the £5 extra delivery charge and was super impressed by how quick it arrived considering it was stating it would arrive on Monday. I was also very pleased with the condition and battery life on the phone. It far exceeded my expectations. Will definitely be buying from you again in the near future. Thanks again for a nice quick and easy transaction... 😊

    Reviewed in United Kingdom on 15 April 2025

  • S

    Steve R.

    Purchased on the 11 February 2024

    Verified purchase
    4.6/5

    No complaints whatsoever for this refurbished phone. As good as new (the alarm had an Indian accent to start with but I was able to turn the voice off after fiddling about for a bit). Well packaged and delivered on time. Phones do not seem to be evolving as fast as they did a few years back so, for me, it made sense to go for a refurbished, high end model from a few years ago. I have not been disappointed.

    Reviewed in United Kingdom on 26 March 2025

See all 2,902 reviews

Reborn vs. brand new

Here’s what you help prevent on average by choosing a reborn smartphone over a brand new one.

77.3 kg of carbon

That’s like driving an old banger from London to Edinburgh and back.

6.3 oz of e-waste

That’s around the weight of a baseball.

537.1 lbs of raw materials

That's like 20 dogs digging in your yard for a week.

77,000 litres of water

That's like running a faucet for 3 days

Everything you ever wanted to know about the Galaxy S21+ 5G 128GB - Black - Unlocked


  • Durability

  • Overall performance

  • Camera

  • Screen quality

  • BlackColour

  • 128 GBStorage

  • 8 GBMemory

  • Galaxy S21+ 5GModel

  • AndroidOS

  • NoRetro tech

  • Dynamic AMOLED 2XScreen type

  • USB-CConnector

  • 10 megapixelsFront camera

The Samsung Galaxy S21+ 5G is a high-performance smartphone that balances cutting-edge technology with a sleek design. Released in January 2021, it remains a strong contender in the smartphone market, offering a range of features suited for both casual and power users.

Key features:
  • Release Date: January 2021
  • Display: 6.7-inch Dynamic AMOLED 2X, FHD+ resolution
  • Processor: Exynos 2100 (International) or Snapdragon 888 (USA)
  • Camera: Triple rear cameras with 64MP telephoto lens
  • Connectivity: 5G compatible for fast data speeds and low latency.
Who is this for?

The Samsung Galaxy S21+ 5G is ideal for users who require a powerful smartphone for photography, gaming, and multitasking. It suits professionals, content creators, and anyone who enjoys a large, vibrant display for media consumption.

Pros & Cons:
Pros Cons
High-quality display with vibrant colours and deep blacks. No expandable storage option available.
Versatile camera system for various photography styles. Large size may not be suitable for all users.

Why refurbished?

Opting for a refurbished Samsung Galaxy S21+ 5G allows you to enjoy premium features while being environmentally conscious. Back Market ensures that all devices undergo rigorous testing and quality checks, so you can trust you're getting a reliable product. Learn more about our quality standards.

Galaxy S21+ 5G 128GB - Black - Unlocked
ColourBlack
Storage128 GB
Memory8 GB
ModelGalaxy S21+ 5G
OSAndroid
Retro techNo
Screen typeDynamic AMOLED 2X
ConnectorUSB-C
Front camera10 megapixels
Company nameSamsung Electronics
Camera TypeTriple (3x)
SeriesSamsung Galaxy S
Company email addresssupport@samsung.com
Company postal addressSamsung House, 1000 Hillswood Drive, Chertsey, Surrey, KT16 0PS, UK
SIM cardPhysical SIM + eSIM
Main camera12 megapixels
Colour (official name)Phantom Black
SD Card SlotNo
FoldableNo
Compatible with latest UpdateYes
Manufacturer RefSM-G996B
Network5G
Resolution1080 x 2400
SAR body1.33
SAR head0.54
Screen size (in)6.7
Carrier compatibilityUnlocked
Year of Release2021
BrandSamsung
Weight200 g
  • 1-year minimum warranty
  • Free delivery on all items
  • Free 30-day returns
  • Excellent customer support