Turning Your Old Phone Into Money (Without Falling for the Carrier's Number)

There's a phone in your drawer losing value every week you leave it there. A flagship sheds 30–50% of its retail price in its first year, and most of that isn't wear — it's the arrival of the next model, which knocks the old one down overnight.

So this is a timing problem before it's a shopping problem. And it has a trap in the middle of it: the biggest number anyone quotes you will come from your carrier, and that number is not cash.

Two peaks, weeks apart

Here's the part that surprises people. The open-market value of your phone and the carrier's advertised trade-in offer do not peak at the same time.

Open-market resale peaks before the announcement, typically four to six weeks out. Once the new model is announced, buyers stop paying for the old one: iPhones commonly lose 15–25% of resale value within 30 days of a launch, with the sharpest fall in the first week, and another step down when the new phone actually ships.

The carrier's advertised offer peaks at launch, because that's when carriers dangle inflated trade-in values to move new hardware. It's the biggest number you'll see all year. It's also the one with strings.

If you're reading this in the weeks after a launch, the cash peak has already passed — that's a reason to move now rather than wait, because the curve keeps sliding. And set a reminder for next August.

Why the carrier's number isn't the number

Carrier trade-in offers are almost never a lump sum. They're monthly bill credits spread over 24 or 36 months, and you only collect all of them if you keep qualifying service for the entire term.

Read that bottom line twice, because it's the part that catches people. Leaving early doesn't just stop the credits — the unpaid balance on the phone you financed becomes due anyway. The credits were subsidising an instalment plan, not paying for your old handset.

The list of things that can break the agreement is longer than most people expect: switching carriers, cancelling the line, downgrading to a cheaper plan, or in some cases paying the device off early. A three-year commitment is a long time to promise you won't want a better plan.

None of which makes carrier deals a scam — if you were going to stay put for three years anyway, the headline number really can be the best available. Just price it honestly: it's a discount on future service, not money for your old phone.

Where the money actually is

Where	What you get paid in	Typical payout	Hassle and risk
Swappa	Cash via PayPal	Highest	You list, photograph and ship it yourself. Sellers pay no fee — buyers cover it
eBay	Cash	High, minus roughly 13% in fees	Widest audience, but the most exposure to buyer disputes
Gazelle, Decluttr, Back Market	Cash, check or PayPal	Middle	Mail it in and they inspect it — quotes can be revised down on arrival
Amazon Trade-In	Amazon gift card only	Middle	Very easy. Fine if you'd spend it there anyway
Best Buy	Store credit only	Middle	Drop it off in person, done the same day
Apple Trade In	Gift card or credit toward a new device	Middle to low	The most convenient, rarely the most money
Your carrier	Bill credits over 24–36 months	Highest sticker, but not cash	Locks you into the plan. Leave early and you forfeit the rest

The single highest-return fifteen minutes here is simply getting more than one quote. Run the same phone through Swappa's pricing tool, Back Market, Decluttr, Gazelle and your manufacturer's trade-in page. The spread between the highest and lowest offer on an identical handset is routinely $80–150 — for the same phone, in the same condition, on the same afternoon.

One thing worth weighing honestly: gift-card payouts aren't worthless, they're just narrower. An Amazon or Best Buy card you were always going to spend is nearly as good as cash. A card for a store you rarely use is worth noticeably less than its face value, so don't compare it dollar-for-dollar against a PayPal offer.

Do this before it leaves your hands

Two of those five do almost all the work.

Activation Lock is the one that kills deals. If Find My is still on and your account is still signed in, the phone is a brick to anyone else — buyback services will either reject it outright or pay you a fraction. Step 4 is how you verify you actually cleared it: a properly wiped phone boots to the initial setup screen and asks for nothing. If it asks for the previous owner's password, you're not done. Dial *#06# to get the IMEI and run it through a free checker to confirm the blacklist and lock status a buyer will see.

The photos are your insurance. The most common complaint about mail-in services is the revised offer — you're quoted $220, and after "inspection" it becomes $140, at which point your options are accept or pay to get your own phone back. Timestamped photos of every side, the screen powered on, and the packed box are what let you argue. If a service does downgrade an offer unfairly and you've already been paid, the escalation ladder for disputes applies here too.

What your phone is likely worth

Device	Roughly what it keeps after a year	Why
iPhone flagship	60–70%	Strongest resale demand of anything in the category
Android flagship	40–50%	Deeper discounting on new units drags the used price down with it
Carrier-branded and budget Android	Loses 50–60% in year one	Thin demand, and often locked or bloated

Which points at a habit rather than a one-off: if you tend to upgrade every couple of years, the resale value of the phone you're buying is a real part of its price. A phone that costs $200 more but holds $250 more value is the cheaper phone. Our best-time-to-buy calendar covers when to buy the replacement.

And if the thing keeping you on a 36-month bill-credit deal is the plan itself, that's worth attacking directly — switching to an MVNO usually saves more per year than the trade-in was ever worth.

The short version: sell before the announcement, not after; get four quotes because the spread is $80–150; treat the carrier's headline as a service discount rather than a payment; and clear Activation Lock before anything ships. More of today's deals are below.