OnePlus 6128 GB•Black

Name: Refurbished OnePlus 6
Brand: OnePlus
Availability: OutOfStock
Rating: 4.2 (23 reviews)

4.2/5(23 reviews)

£134.00

Save £305.00

Standard Delivery by 14 - 16 OctExpress Delivery by 12 Oct for £12.00

Restored professionally

Based on up to 100-points of inspection

The PhoneMart Promise

Based on up to 100-points of inspection

We measure each battery's health and capacity against strict standards, and replace any that don't make the grade, so you get power you can rely on all day.
The display is switched on and looked over closely for any blemishes, so there are no marks, dust spots or discolouration to spoil the view.
Where a charger is included, the cord and connectors are checked for wear, and the plug is confirmed to fit sockets.
Before it ships, every device gets a thorough professional clean and polish so it feels fresh in your hands.
Every lens is put to work, so we can confirm sharp photos, smooth video and reliable performance on video calls.
A full factory reset wipes the device clean, securely erasing all previous data and restoring the original settings.
We confirm the network status up front, so you know exactly whether the device is locked or unlocked before it arrives.
Cards are inserted to make sure the device reads SIM and memory cards correctly, and that every tray and slot works smoothly.
Each button is pressed to check it responds straight away and does exactly what it should, from volume to lock to power.
If any parts are fitted during refurbishment, they are tested for compatibility and held to the same standards as the originals.
We run the IMEI to confirm it is clean and never blacklisted, and that the device details match the manufacturer's records.
The moisture indicator inside the device is inspected to rule out any history of water or liquid damage.
Every port, including the headphone, USB and Ethernet connections, is checked to make sure it connects and works reliably.
Face and fingerprint unlock, along with any voice recognition, are tested to make sure they work quickly and accurately.
Positioning is checked for accurate GPS, so maps and location apps behave exactly as they should.
External sensors, such as proximity, brightness, laser measurement and heart rate, are checked for precise and responsive readings.
Screws, casing, frames and other mechanical parts are examined to confirm they are original or quality replacements, and any replacement has to match or beat industry standards.
We confirm that Wi-Fi and Bluetooth connect quickly and hold a stable signal.
Speakers and microphones are inspected and fine tuned so audio records and plays back clearly.
The flash and every indicator light are tested to confirm they light up and work correctly.
Any features that are specific to your device are checked against the same standards, so nothing gets missed.

Select the condition

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Body

Almost no signs of useVerified partsBattery for daily use

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OnePlus 6

Excellent
Standard battery
Black
128 GB

£134.00

£439.00 newSave £305.00

14-day returns

Set up the return in just a few clicks in your PhoneMart account.

Send the device back within 14 days of receiving it. Return postage is paid by you unless the item is faulty, damaged or not what you ordered.

Get your cash back within 3 business days of the seller receiving the device.

Proudly refurbished by PhoneMart Privacy policy

Comes with

Compatible charging cable

Excellent-Standard battery-Black-128 GB

£134.00

£439.00 newSave £305.00

£134.00

£439.00 newSave £305.00

Customer reviews for OnePlus 6

Overall rating

4.2/5

23 verified reviews

Rating details

Appearance: 4.3/5
Battery: 3.8/5
Delivery: 4.6/5

Reviews

Dean Shaw

Verified purchase

5/5

Reviewed 01/06/2026, United Kingdom.

Really good, 10 out of 10, like a phone that is brand new but for 90% less money.

OnePlus 6 128GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 16/05/2026

Damion Boyle

Verified purchase

5/5

Reviewed 09/05/2026, United Kingdom.

No problems and it was delivered with care.

OnePlus 6 64GB Black Unlocked | PhoneMartSee item

Condition FairPurchased 30/04/2026

Chris Bailey

Verified purchase

5/5

Reviewed 05/01/2026, United Kingdom.

The website was easy to use, my phone arrived quickly and was well packed. I'm happy with the whole experience and would suggest it to anyone wanting a replacement phone at a fair price.

OnePlus 6See item

Purchased 26/12/2025

Robert Cox

Verified purchase

5/5

Reviewed 14/09/2025, United Kingdom.

Great experience and device

OnePlus 6 128GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 23/08/2025

Arunkumar Boyle

Verified purchase

5/5

Reviewed 11/07/2023, United Kingdom.

I'm happy to say the device looked better than I expected and my worries about battery life were wrong. I understand why the packaging was minimal and even liked it, but I wouldn't mind an extra layer of protection for the device. Overall, good value for money. I hope to use this phone for a long time.

OnePlus 6See item

Purchased 29/06/2023

Maria Maguire

Verified purchase

5/5

Reviewed 12/06/2022, United Kingdom.

I've had it for a few months now, still fast and working like new. It came in great condition.

OnePlus 6 128GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 01/03/2022

Santhosh Gallagher

Verified purchase

5/5

Reviewed 16/03/2022, United Kingdom.

Best phone I have received. Still in very good condition with no issues at all.

OnePlus 6 64GB Black Unlocked | PhoneMartSee item

Condition FairPurchased 08/09/2021

Greg Pollard

Verified purchase

5/5

Reviewed 04/12/2021, United Kingdom.

I was apprehensive about purchasing a refurbished phone for my daughter but shouldn't have been as their simple condition rating lets you decide to save some money if you're okay with a couple of minor imperfections or pay a fair price for a very good condition product. From description on the website through the buying process to delivery and even just checking in with you a week or so after receiving your order to make sure that you're happy with everything is brilliant. The phone is a OnePlus 6 and is in mint condition and working perfectly. Would recommend PhoneMart and will definitely use them again.

OnePlus 6 128GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 24/11/2021

William Adams

Verified purchase

5/5

Reviewed 16/09/2021, United Kingdom.

What a deal! Phone is in perfect condition. Arrived next day if not the day after. Came in original packaging with lightning charger and protection case. Case is slightly scratched but previous owner obviously kept it on because I can't see a scratch anywhere on the phone. Had it for a couple of weeks now and the phone works beautifully without any software issues and the battery lasts all day. If I wanted a new phone this good I'd be paying well over double. Refurbished phones from PhoneMart from now on.

OnePlus 6 128GB Black Unlocked | PhoneMartSee item

Condition ExcellentPurchased 03/09/2021

Daniel Conway

Verified purchase

5/5

Reviewed 13/09/2021, United Kingdom.

I will definitely buy from PhoneMart again. Fast delivery, good price and the phone was in great condition even though it was listed as "fair". I'll be a repeat customer and will recommend them. Give them a go, I doubt you'll be disappointed.

OnePlus 6 64GB Black Unlocked | PhoneMartSee item

Condition FairPurchased 03/09/2021

Common questions about the OnePlus 6

Durability

Overall performance

Camera

Screen quality

Black

Colour

128 GB

Storage

Unlocked

Carrier compatibility

Compatible with latest update

Foldable

16 megapixels

Front camera

16 megapixels

Main camera

6 GB GB

Memory gb

Mobile network

When you want a smartphone that handles daily tasks with ease, the OnePlus 6 delivers with its vibrant 6.28-inch Optic AMOLED display. Whether you are streaming videos or scrolling through apps, the screen offers clarity and vivid colours that make every moment enjoyable.

The OnePlus 6 from 2018 gives you 6 GB of memory, so switching between social media, messaging, and browsing stays smooth. Its unlocked status means you can choose any network, and with dual physical SIM slots, managing work and personal numbers is straightforward.

Key features

Carrier compatibility: Unlocked for any network
Screen size: 6.28-inch Optic AMOLED display
Memory: 6 GB RAM for multitasking
Main camera: 16 megapixels for clear photos
Front camera: 16 megapixels for sharp selfies
Sim card: Dual Physical SIM for flexible use

Who is this for?

The OnePlus 6 fits well for anyone who needs a dependable smartphone to handle everyday apps, social media, and photo sharing. Students and casual users will appreciate the smooth performance and bright display for daily routines.

It also suits people who want to keep two phone numbers active at once, thanks to the dual SIM slots. If you want a phone that works well on 4G networks with a familiar Android experience, this is a solid choice.

What you get and what to know

What you get	Good to know
Unlocked phone compatible with any carrier	4G network provides reliable internet speeds
6 GB RAM keeps everyday apps running smoothly	No SD card slot storage is fixed internally
Dual Physical SIM supports two numbers simultaneously	Android OS runs established software builds

Why buy it refurbished?

Buying a refurbished OnePlus 6 means you get a fully tested smartphone that meets high quality standards before it reaches you. Each phone passes a thorough 100-point inspection covering key functions like screen, cameras, buttons, and connectivity to ensure reliability.

Refurbished phones come with a 24-month warranty, free delivery, and 14-day returns. Choosing refurbished also helps reduce electronic waste by giving devices a second life and lowering demand for new materials.

ColourBlack

Storage128 GB

Carrier compatibilityUnlocked

Compatible with latest updateNo

FoldableNo

Front camera16 megapixels

Main camera16 megapixels

Memory gb6 GB GB

Mobile network4G

OsAndroid

Resolution1080 x 2280

Sar head1.33

Screen size in6.28 inch

Screen typeOptic AMOLED

Sd card slotNo

Sim cardDual Physical SIM

Weight177 g g

Year of release2018

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OnePlus 6128 GB•Black

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Who is this for?

What you get and what to know

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