iPhone 17 Trade-In Value: What Your iPhone Is Worth in 2026

Your iPhone loses value on a schedule set by Apple's calendar. Every September keynote resets the resale market a notch lower for every phone that came before it. The iPhone 17 line is current, the iPhone 18 Pro and Pro Max are confirmed for September 2026, and the gap between selling now and selling in October is real dollars.

Here are GadgetRenu's live top-of-catalog values for the current generation — Excellent condition, highest storage tier, unlocked. Lower storage, visible wear, or a weak battery pulls each number down.

Values as of August 2026. Your exact number depends on storage, condition grade, and battery health.

Older generations still carry weight. An iPhone 16 Pro Max in good shape remains one of the highest-paying non-current phones in the catalog, and even a three-year-old iPhone 14 Pro Max covers a solid chunk of a new phone. For the full breakdown by model and condition, see how much your iPhone is worth, or pull your specific figure in about two minutes on GadgetRenu's iPhone page.

The curve has looked the same every year since the iPhone X. Three phases, and knowing where your phone sits in them is the whole game for timing a sale.

Month one after the keynote — the cliff. This is the steepest single drop. Early adopters flood the market with trade-ins the same week buyers get a shiny new option to chase. Based on GadgetRenu payout data across recent cycles, a Pro Max typically loses 15-20% of its value in that first month alone. Independent trackers see the same curve — SellCell measured the iPhone 17 line at roughly 35% depreciation just ten weeks after its own launch.

Months two through six — the slow bleed. Prices keep sliding, just quietly. It doesn't make news, but another 10-15% drains off over this stretch without you noticing.

Months nine through twelve — the floor. Depreciation flattens as the generation settles into its used-market price, right up until the next iPhone is announced and the cliff repeats.

Put in dollars: a $1,146 iPhone 17 Pro Max held from launch of the iPhone 18 through the following year lands roughly 30-40% lower — somewhere around $690-800 — by the time it's a full generation past its prime. The sellers who move within two weeks of deciding to upgrade consistently clear more than the ones who let the phone sit in a drawer for a season.

Run the two paths with the iPhone 17 Pro Max as the example, since it anchors the top of the table.

Sell now. You get up to $1,146 today in cash, locked at that price, and you decide whether it funds an iPhone 17 or waits in your account for the iPhone 18.

Wait for the iPhone 18 keynote. The iPhone 18 Pro, Pro Max, and Apple's first foldable iPhone are confirmed for September 2026, with the base iPhone 18 and 18e following in early 2027. The moment that keynote ends, the 17 Pro Max stops being current. That first month typically strips 15-20% off — call it $170 to $230 gone from a $1,146 phone before you've done anything. If you hold it a full year past launch, you're looking at roughly $690-800. Waiting to sell a phone you've already stopped using is a guaranteed loss of a few hundred dollars.

There's one honest exception. If Apple is expected to kill a form factor people love — the way demand for the mini and the small SE firmed up when those lines ended — an outgoing model can hold value a little longer than usual. Those cases are rare and hard to predict.

If you're upgrading, sell the old phone within two weeks of unboxing the new one. GadgetRenu's 14-day price lock lets you accept today's number, ship on your own schedule with a free insured USPS label, and keep your payout even if Apple announces something while your phone is in transit. For the full timing breakdown, read should you sell your iPhone before the iPhone 18.

The whole cycle runs off Apple's September launch. Here's the seller's calendar.

January through June — flat. No launch on the horizon, so prices sit within about 5% of where they stabilized after the holidays. A comfortable window; you'll get fair value without a clock running.

July through mid-August — the peak. Prices haven't started their pre-launch slide, and demand from people who want a phone but not a soon-to-be-old new one keeps the used market firm. This is when the numbers are highest.

September — the drop. Apple announces in the first or second week. Resale values for every prior model start their sharpest annual decline the hour the keynote ends. Sell before that date, not after.

October through December — the dip and partial recovery. Prices fall hard through October as the market digests the new phones, then firm up somewhat in November and December as holiday gifting revives demand for affordable used models.

The one habit worth keeping: set a reminder for mid-August. That's your annual cue to clear out any Apple device you're not using. GadgetRenu processes iPhones year-round from our Wallington, NJ facility, and August sellers reliably beat October sellers on the same phone in the same condition.

You can't change the model or storage, but you control the condition grade — and one setting that can zero out an offer entirely.

Sign out of iCloud and turn off Find My before you ship. An activation-locked phone is worth close to nothing because it can't be resold, and this is the number-one cause of lower-than-quoted offers. GadgetRenu will reach out if there's a lock, and every phone we receive goes through a Certified Data Wipe once it's processed — but clearing the lock upfront avoids the delay.

Clean it. Grime in the speaker grilles and smudged cameras read as neglect during inspection. Two minutes with a microfiber cloth can genuinely nudge the grade.

Pull the case and screen protector. Inspectors grade the actual glass, not a scratched-up protector. A phone that looked rough often grades a tier higher once the beat-up case comes off.

Describe condition honestly. Your quote is built from what you report, and GadgetRenu backs every grade with a documented photo inspection. If the phone arrives worse than described — hidden crack, dead pixel, dent — the offer gets adjusted. An accurate description gets you an accurate quote with no surprises.

Toss in the box and cable if they're handy. Not required, and it won't move the number much, but original accessories can bump the value slightly.

Ship promptly. You have 14 days to send it after accepting a quote. Even with the price locked, mailing it the same week means you never risk sliding past the window.

Three generations back tells you how Apple phones age — and which ones age gracefully.

The pattern that matters: Pro and Pro Max models depreciate more slowly in percentage terms than base models. A Pro Max holds a larger share of its original value at every step back, driven by the bigger screen, better cameras, and higher storage those models ship with.

Here are live top-of-catalog values for the Pro Max at each generation, Excellent condition and top storage. They shift week to week as the used market moves, but each is a real GadgetRenu quote, not an estimate.

Each generation back costs roughly a fifth to a third of the value above it. If you're buying new with resale in mind, the Pro line is the better long-term hold. A household sitting on an iPhone 15 Pro, an iPhone 14 Pro Max, and a base iPhone 15 is looking at several hundred dollars in combined value — pull each live quote on GadgetRenu's iPhone page.

Three channels, three different goals.

Apple Trade-In runs on purchase credit. It fits when you're already buying a new Apple device and want the value folded into that checkout — the credit comes back as your original payment method, store credit, or an Apple Gift Card depending on the path. If you're not buying from Apple, that format is a poor fit for actual cash.

Carrier promotions (AT&T, Verizon, T-Mobile) advertise the biggest headline numbers — $800 or $1,000 toward a new phone. The value arrives as bill credits spread over 24-36 months, tied to a specific plan tier. Switch carriers or change your plan early and you forfeit the rest. Factor in the pricier plan these deals often require and the real value usually lands below the sticker.

GadgetRenu is a direct cash buyback. Quote in about two minutes, free insured USPS shipping, a 14-day price lock, and payment within three business days of delivery — paid by PayPal, Zelle, Venmo, Cash App, or a mailed check. No contract, no bill credits that evaporate if you change carriers, no purchase required.

Want cash with no contract? GadgetRenu is the direct route. Already buying from Apple? Their credit fits that one purchase. Staying on your carrier plan for the full credit window? The promotion math can work. For the deeper head-to-head, see Apple Trade-In vs. GadgetRenu.

How much will my iPhone 16 be worth when the iPhone 18 comes out?

An iPhone 16 Pro Max around $777 today will slip to roughly $620-660 in the first month once the iPhone 18 Pro launches and it becomes two generations old — a 15-20% cut, with more draining off over the year. Base models drop faster in percentage terms. Every month of delay costs real money.

Does a cracked screen make my iPhone worthless?

No. A crack lowers the offer but doesn't erase it. GadgetRenu accepts cracked-screen phones and quotes the damage honestly — depending on model and severity, a phone you'd stopped using can still be worth a few hundred dollars.

Can I sell my iPhone if I'm still making payments on it?

Yes, once it's fully paid off and unlocked. Most carriers let you settle the balance anytime through their app. GadgetRenu can't accept phones that are still carrier-financed or flagged as lost or stolen.

How long until I get paid?

Instant quote, free prepaid insured USPS label, and payment within three business days of delivery via PayPal, Zelle, Venmo, Cash App, or check. Quote to cash usually runs 7-10 days total.

Should I sell now or use Apple's trade-in when I buy a new one?

If you want cash and a direct process, sell through GadgetRenu. If you want credit folded into an Apple purchase, Apple Trade-In fits that. Plenty of people do both — cash out the old phone here, buy the new one separately. For timing, read our guide on the best time to sell your phone.