Trade-in programmes quote a value based on your description of the device, then adjust after inspection. The adjustments follow a pattern.
How the process works
You describe the device and its condition, receive a quote, send or hand over the device, and the value is confirmed or revised after inspection.
Where the revision is downward, you generally accept the lower figure or have the device returned, sometimes at your cost.
Which means the quoted figure is an offer conditional on your assessment matching theirs, and the assessment criteria are the operator's.
What produces deductions
Consistently, across programmes.
Screen condition, where scratches visible under inspection lighting count even when invisible in ordinary use.
Battery health below a threshold, which for older devices is common.
Casing marks, dents and any evidence of impact.
Non-original parts, including a replaced screen or battery, which frequently reduces the grade substantially even where the repair was competent.
Any activation lock or account association still present, which makes the device unsellable and generally voids the trade entirely.
And moisture indicators triggered, which is checked and is a common cause of rejection.
The account lock issue
Worth separating because it is the most common failure and is entirely avoidable.
Devices tied to an account cannot be reset and resold, and a device arriving still linked is either returned or held pending resolution.
Removing the device from your account, before sending, is a specific step distinct from performing a factory reset.
Which is documented by every manufacturer and skipped regularly, and it is the single most common reason a trade-in stalls.
The alternatives, compared
Since trade-in is rarely the highest value.
Private sale generally realises the most, at the cost of effort, meeting strangers, and payment risk.
Specialist buy-back services sit between, offering less than private sale and more than manufacturer trade-in in many cases, with a straightforward process.
Manufacturer and carrier trade-in offers the least in cash terms and frequently the most in credit terms, since the value is inflated when applied against a new purchase.
That last point is the important one. A trade-in bonus conditional on buying a new device is a discount on the new device rather than a valuation of the old one.
The promotional trade-in
Worth reading carefully.
Offers guaranteeing a minimum value regardless of condition are genuine and are conditional — generally on a specific new purchase, a contract term, or a device that powers on.
The value is frequently delivered as bill credits over a period rather than upfront, which means leaving the contract early forfeits the remainder.
Which converts what looks like a trade-in into a retention mechanism, and the total commitment is what should be compared rather than the headline figure.
Preparing a device
The steps that preserve value.
Back up, then sign out of all accounts, then remove the device from the account, then factory reset.
Remove any storage cards and accessories not being traded.
Clean it, which sounds trivial and affects cosmetic grading.
Photograph its condition before sending, which is the evidence if a dispute arises about damage in transit.
And record the serial number.
The data question
Which matters more than the money.
A factory reset on modern encrypted devices is generally sufficient, since it destroys the encryption key and renders remaining data unreadable.
Older or unencrypted devices, and particularly conventional hard drives, require more — secure erasure or physical destruction.
Which means the appropriate step depends on the device, and for anything holding sensitive material the cautious approach is worth the small loss in value.
What I actually do
Check the private sale price and the specialist buy-back price before accepting any trade-in quote.
Treat promotional trade-in bonuses as a discount on the new purchase and compare the total commitment.
Prepare the device properly, particularly the account removal.
And keep devices longer, which is the option that makes the whole calculation smaller and is generally the better one.
Timing the trade
Which affects the value substantially.
Device values fall sharply on the announcement of a successor, not on its release, which means trading before an expected announcement realises more.
Announcement cycles for major devices are predictable, and trading a few weeks ahead of one is worth a meaningful amount.
The counterargument is that you are without a device in the interval, which is why most people trade at the moment of upgrade and accept the lower figure.
Recycling where there is no value
For devices too old or damaged to trade.
Manufacturer and retailer take-back schemes accept devices for recycling regardless of condition, generally free, and in some jurisdictions retailers are obliged to accept an equivalent old item.
Electronic waste contains recoverable materials and also hazardous components, which is why disposal in general waste is prohibited in many places.
Wiping the device properly remains necessary before recycling, since the physical destruction is not guaranteed and the data risk is the same.