- TrueGrade tested — passes our 25-point inspection
- Fast, tracked shipping
- 90-day returns
- Up to 70% cheaper than new
OnePlus 6 – Midnight Black
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Buy a certified refurbished OnePlus 6 in Midnight Black from $119 at Device Giant — every 6 is fully tested under our 25-point TrueGrade inspection, ships unlocked-ready, and is backed by our 90-day warranty and free US shipping. The OnePlus 6, released in 2018, was a flagship killer that offered premium performance at a competitive price. It featured a sleek glass design, a vibrant Optic AMOLED display, and a powerful Snapdragon 845 processor, making it a strong contender in the high-end smartphone market. Known for its smooth OxygenOS experience, the OnePlus 6 delivered a fast and fluid user interface, appealing to tech enthusiasts and everyday users alike. Compare grades, storage and carrier options below and save versus buying new.
6 key features
- Qualcomm Snapdragon 845 Processor
- Optic AMOLED Display
- Dual Rear Cameras with OIS
- Fast Dash Charge Technology
- OxygenOS (Android 8.1 at launch)
- Glass and Aluminum Design
- 3.5mm Headphone Jack
- Rear Fingerprint Sensor
6 full specifications
| Display | 6.28" Optic AMOLED, 2280 x 1080, 60Hz |
|---|---|
| Processor | Octa-core |
| RAM | 6GB |
| Storage | 64GB, 128GB, 256GB |
| Rear camera | 16 MP |
| Front camera | 16 MP, f/2.0, 25mm (wide) |
| Battery | 3300 mAh, 20W wired (Dash Charge) |
| Build | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame |
| Operating system | Android |
| Network | 4G LTE |
| Biometrics | Rear-mounted fingerprint sensor, Face Unlock |
| Dimensions | 155.7 x 75.4 x 7.8 mm |
| Weight | 177 g |
Why buy a refurbished 6?
- Save big — a used 6 starts at just $119, well below retail.
- 25-point TrueGrade tested — battery, screen, cameras, buttons and network all verified.
- 90-day warranty & free shipping on every 6.
- Better for the planet — buying refurbished keeps e-waste out of landfills.
- Still offers solid performance for everyday tasks.
- OxygenOS provides a clean, near-stock Android experience.
- The 3.5mm headphone jack is a valuable feature for many users.
6 pros and cons
Pros
- Excellent performance for its generation
- Fast and fluid OxygenOS
- Good camera quality for its time
- Premium build materials
- Retains 3.5mm headphone jack
Things to know
- No official IP rating
- No wireless charging
- Single bottom-firing speaker
- Software updates have ended
Carrier compatibility
This refurbished 6 is available unlocked and compatible with GSM Unlocked. Check the carrier selector above — we only show options we have in stock so you can buy the exact 6 that works on your network.
Storage options
Choose the 6 in 128GB. Pick more storage for photos, apps and offline media.
TrueGrade condition guide
- Grade A — Excellent: like-new, minimal to no visible wear.
- Grade B — Great: light signs of use, fully functional.
- Grade C — Fair: visible wear at the best price.
- As-is / damaged: clearly described cosmetic or functional notes, priced accordingly.
6 — frequently asked questions
Is the OnePlus 6 still worth buying in 2026?
Yes — with Qualcomm Snapdragon 845 Processor and a proven design, the 6 remains a great-value refurbished phone, especially at $119 with a 90-day warranty.
Does the refurbished 6 come unlocked?
Most 6 units are sold unlocked and ready for GSM Unlocked. Carrier-specific versions are clearly labeled in the carrier selector.
How much does a used 6 cost?
At Device Giant a refurbished 6 starts from $119, with the exact price depending on storage, carrier and TrueGrade condition.
What's included with a refurbished 6?
Your 6 ships fully reset and tested with a compatible charging cable, a 90-day warranty and free shipping. Accessories vary by condition.
What do the condition grades mean?
See the TrueGrade guide above — A (excellent), B (great), C (fair) and clearly-described as-is options, so you can pick the right balance of price and cosmetics for your 6.
Every device is graded for cosmetic condition and tested for full function against our TrueGrade 25-point inspection. Buying refurbished keeps a working phone out of landfill — better for your wallet and the planet.
Better for your wallet & the planet
Every refurbished phone is a win for the planet
Choosing refurbished over new keeps a working device out of landfill — and skips the carbon, water and raw materials it takes to build a brand-new one. A small choice with real impact.
Less carbon
Most of a phone's lifetime emissions come from manufacturing. Reuse skips nearly all of it.
Less e-waste
Millions of devices are trashed every year. Every reused phone is one less in a landfill.
Fewer raw materials
No new mining of rare metals, no manufacturing water use — the device already exists.
Circular by design
When a device truly can't be saved, we harvest its working parts and recycle the rest responsibly.
Refurbished is not a compromise. It is the smarter, greener way to buy tech, and every TrueGrade device ships tested, graded and ready for its second life. See how we do it →
