Private Devices Lesson 1 of 4

Private · Lesson 1 · ~7 min

Before you buy.

Foundations Lesson 3 showed that ~80 % of a laptop's lifetime CO₂ is in manufacturing. Lesson 4 ranked the 4 R's, with Reuse at the top. Both lead to the same place: the most impactful private decision is not buying new.

This lesson is about that decision. When you genuinely need a different device — what should you actually buy, and where?

The hierarchy of acquisition

Order matters here too

Before reaching for the wallet, walk through this hierarchy:

1. Don't buy at all. Can a software fix, repair, or repurposing of what you already own solve the problem? You will see this in Lessons 2 and 3.

2. Borrow or share. For occasional needs — printing, scanning, the once-a-year video editing — a friend's hardware, a neighbour's, or a public resource (library, Fablab Lëtzebuerg) avoids the purchase entirely.

3. Buy second-hand or refurbished. The manufacturing footprint has already been paid by the previous owner. Refurbished (from a professional reseller with warranty) is usually safer than private second-hand. Both are dramatically better than new.

4. Buy new only as a last resort. And if you do, buy something built to last: modular, repairable, well-supported. The EU Repairability Index (A–E rating, mandatory on smartphones and tablets since 20 June 2025) tells you at a glance how serviceable a new device will be.

Refurbished vs second-hand: not the same thing

These two terms get used interchangeably but they are different products:

Refurbished — sold by a professional reseller. Inspected, cleaned, tested, and graded. Comes with a warranty (typically 12 months in the EU, up to 24 months for Apple at some Luxembourg specialists). Returnable within 14–30 days. Battery health is reported. Price is higher than private sales, but the risk is lower.
Second-hand / private sale — sold by a previous owner on Vinted, Facebook Marketplace, eBay Kleinanzeigen. Cheaper, but no warranty, no graded condition, and limited recourse if there's a problem. You inherit whatever issues the device has.
Both are 'reused' from the manufacturer's perspective — and both avoid the new-device manufacturing footprint.

Where to buy refurbished in Luxembourg and the EU

Established refurbishers with warranty and condition grading. Luxembourg-specific options are marked LU.

Back in Use

Luxembourg specialist for refurbished Apple devices (iPhone, iPad, MacBook, Apple Watch). Up to 2 years warranty, accepts eco-cheques.

backinuse.lu/en LU

Hifi International

Luxembourg electronics retailer with refurbished smartphones (Apple, Samsung) and warranty.

hifi.lu/en/refurbished-smartphones LU

Refurbished.lu

Luxembourg marketplace for reconditioned phones, tablets and laptops from multiple sellers.

refurbished.lu/ EU

Refurbed

European refurbisher (AT-based). 12-month warranty, 30-day return window, broad selection across all categories.

refurbed.lu/ EU

Back Market

Large EU-wide refurbisher marketplace with a unified grading system and 12-month warranty across all sellers.

backmarket.lu/ EU

Rebuy

German refurbisher with extensive smartphone, laptop, tablet and console inventory. Clear A/B/C condition grading.

rebuy.de/

Knowledge check You need a new (to you) iPhone. You see the same model on Back in Use for 470 €, on Vinted from a private seller for 320 €, and brand new at the Apple Store for 750 €. Which is the most carbon-efficient choice?

Apple Store new — guarantees no compromise on the device. Vinted at 320 € — cheapest, so the smallest purchase. Back in Use refurbished at 470 € — manufacturing footprint already paid, warranty included, much lower risk than Vinted. All three options have the same environmental impact since the iPhone already exists.

Correct.

Not quite — review the section above.

Buying privately? Six checks before you pay.

Vinted, eBay Kleinanzeigen, and Facebook Marketplace offer the cheapest prices but no warranty and limited recourse. Before paying for a phone or laptop from a private seller, do all six checks:

Inspect in person. Turn it on, connect to Wi-Fi, check battery health (iPhone: Settings → Battery → Battery Health; Android: Settings → Battery or a diagnostic app). Walk away from anything below 75 % unless the price reflects it.
Ask for the original invoice. Protects you if the device turns out to be reported stolen and gets remotely blocked by the manufacturer (Apple Find My, Samsung Find My Mobile).
No activation locks. iPhone: Find My iPhone off, Apple ID removed. Samsung: Samsung account removed. A locked device is a brick — and the seller "forgot the password" is a classic scam.
Full factory reset. The device should show the initial setup screen. No accounts, no installed apps from the previous owner. Seeing someone else's photos or messages is a red flag — walk away.
Check the IMEI / serial number on imeicheck.com or the manufacturer's site, to confirm the device isn't reported lost or stolen.
Use buyer protection. For shipped purchases, prefer Vinted Payment, eBay Buyer Protection or PayPal Goods & Services. Avoid bank transfers to unknown sellers — they offer no recourse if the device never arrives.

Knowledge check A Vinted seller offers an iPhone 14 for 350 € and says: "It's locked to the previous owner's Apple ID but I can't reach them anymore. I'll give you a discount for the trouble." What should you do?

Accept — the discount makes it worth the hassle, and you can probably unlock it later. Walk away. An iPhone with an active Apple ID lock cannot be unlocked by anyone except the original owner — it's a brick. Buy it and contact Apple Support to remove the lock. Buy it; activation locks expire after a few months of inactivity.

Correct.

Not quite — review the section above.

If you must buy new

Make it count

Sometimes new really is the only option — a model that doesn't exist on the refurbished market, a corporate requirement, accessibility needs. When you do buy new, the goal is to buy something built to last.

Three criteria worth applying:

• Repairability score. The EU mandates an A–E rating for smartphones and tablets sold in the EU since 20 June 2025. "A" means easy to disassemble, parts widely available, software support guaranteed. Pick A or B if you can — the few euros saved on a C-rated device come back as years of frustration later.

• Long software support. Apple gives ~6 years of iOS updates; Google Pixel and Samsung high-end Android now guarantee 7 years. Mid-range Android phones often get 3 years and then stop. The longer the support, the longer the device stays usefully secure.

• Modularity, where it still exists. Framework Laptop (released 2021) is the textbook example: every major component — mainboard, ports, screen, keyboard, battery — is user-replaceable. Fairphone has done the same for smartphones since 2013. These cost more upfront but pay back over time.

Quick decision rules

When in doubt — and to skip the analysis paralysis — apply these defaults:

Phone? Refurbished from Back in Use (Apple) or Hifi International (Android). Avoid Vinted unless you can inspect in person.
Laptop? Refurbished. ThinkPad / EliteBook / Latitude series from Refurbed or Back Market — they are over-engineered ex-corporate devices, designed for daily abuse and easy repair.
Tablet? Refurbished iPad on Back in Use, Refurbed, or Back Market.
New, against your better judgement? Pick a model with EU Repairability Score A or B, ≥5 years of software support, and a removable / replaceable battery — even if it costs more upfront.

Why this matters for the rest of the path

Connecting the dots

Lesson 1 covered the don't buy new side of the equation. The next three lessons cover the other three R's, in private context:

• Lesson 2 — Repair Smart. The 65 % rule applied to your phone and laptop, where to get help in Luxembourg, what the EU Right to Repair regime (in force July 2026) actually means for you.
• Lesson 3 — Make It Last Longer. Software tricks that extend hardware life: Linux when Windows drops support, cloud-offload, repurposing into media centres and kids' computers.
• Lesson 4 — End of Life Done Right. Wiping data properly, donating to Digital Inclusion, when SuperDrecksKëscht is the right route.