How to trade in your iPhone for the iPhone 18 (and how to maximize your credit)

Apple's trade-in program, the three major US carriers' trade-in programs, and third-party marketplaces (Swappa, Gazelle, eBay) are the realistic paths for getting cash or credit toward an iPhone 18. The trade-in math shifts based on which path you take and how you prepare your device. Below is the practical breakdown — what to expect for an iPhone 17 Pro Max / Pro / standard trade, when to trade, and how to maximize credit without getting scammed.

How does Apple's iPhone trade-in program work?

Apple's GiveBack program accepts iPhones back to the iPhone 8, plus Mac, iPad, Apple Watch, and other devices. The flow is straightforward:¹

1. Get a quote at apple.com/shop/trade-in by selecting your current iPhone model, condition (good / broken / no-power), and carrier.
2. Apply the credit at checkout when ordering the new iPhone 18, or accept an Apple Gift Card if you are not ready to upgrade yet.
3. Ship your old device within 14 days of receiving the new iPhone. Apple includes a prepaid shipping label. You have 14 days to back out if you change your mind.
4. Apple inspects the device when it arrives. If the condition matches the quote, the credit is finalized. If not, Apple will send a revised (lower) offer and give you the option to accept or have the device returned.

Apple's quoted values are based on a "fully functional, good condition" device with no cracks, no screen defects, and a healthy battery. Devices with cracked screens, water damage, or non-Apple-authorized repairs are typically downgraded.¹

How much will I get for my current iPhone?

Expected trade-in values heading into the iPhone 18 cycle (US, unlocked, good condition):

Device you're trading in	Apple GiveBack (estimate)	Best carrier (estimate)	Third-party (Swappa / eBay)
iPhone 17 Pro Max 256GB	$700-$850	$850-$1,000	$850-$950
iPhone 17 Pro 256GB	$650-$750	$750-$900	$750-$850
iPhone 17 256GB	$450-$550	$500-$650	$500-$600
iPhone 16 Pro Max 256GB	$550-$700	$700-$850	$650-$800
iPhone 16 Pro 256GB	$450-$600	$600-$750	$550-$700
iPhone 15 Pro 256GB	$350-$500	$450-$600	$450-$550

These are realistic ranges based on prior cycles and current resale data, not Apple-confirmed quotes. Your actual Apple quote depends on which carrier / storage configuration you select when getting the estimate.¹² Carrier values (especially AT&T and T-Mobile for customers on qualifying plans) often beat Apple's by $50-$200, especially on Pro models.

Should I use Apple's trade-in, or check elsewhere?

The decision depends on what you want to optimize:

• Apple GiveBack is the lowest-friction option. The credit applies directly to your iPhone 18 order, Apple handles the shipping, and the price-quote process is transparent. Apple's prices are usually slightly below the third-party market, but the convenience makes up for it.
• Carrier trade-in (AT&T, Verizon, T-Mobile) often has the highest dollar value, especially for customers adding a new line, porting a number in, or on a premium unlimited plan. The catch: the credit is usually paid out as bill credits over 24-36 months, not upfront. Read the fine print carefully — early upgrade or plan change can forfeit the remaining bill credits. AT&T and T-Mobile historically run the most aggressive trade-in promotions around iPhone launch.³⁵
• Third-party marketplaces (Swappa, Gazelle, eBay Decluttr) give you the highest cash value but require the most work: you photograph the device, list it, ship it after the buyer commits, and wait for payment. Swappa tends to have the best prices for recent iPhones in good condition; Gazelle is faster but pays less; eBay is highest-effort but occasionally highest-yield.

Rule of thumb: If you want the iPhone 18 on launch day and value simplicity, use Apple or your carrier. If you have a 2-3 week buffer and want to maximize cash, list on Swappa.

When should I trade in?

Timing matters, because trade-in values drop sharply the moment a new model launches.

• Best timing: between Apple's announcement and pre-order Friday. Apple's trade-in quotes are most generous in this window because Apple is trying to drive upgrades. Carrier promotions also peak here.
• Second best: 1-2 weeks after launch, when demand for older iPhones on the secondary market is still moderate.
• Avoid: 1-3 months after launch. The resale value of last year's iPhone drops 10-20% in this window as the market gets flooded with trade-ins.
• Worst: 6+ months after launch. If you wait half a year, expect to lose an additional 15-25% on the trade-in vs. selling in the launch window.

If you are firmly upgrading to the iPhone 18, the right time is right now through the September 8 event — get your Apple quote (or your carrier quote) and lock it in by completing the trade-in order on launch day.

How do I prepare my iPhone before trading it in?

Apple's checklist is the right one, regardless of where you trade.²

1. Back up your iPhone to iCloud or your computer. The backup is what you'll restore to your new iPhone 18.
2. Sign out of iCloud, Find My, and the App Store. On the iPhone, go to Settings → [your name] → Sign Out. This is the most-skipped step and the most-common cause of an iPhone being unusable to the next owner.
3. Turn off the eSIM if your iPhone has one. (iPhone 13 and later have eSIM.) This is critical — if you don't disable the eSIM profile, your number may stay tied to the old device and prevent the new owner from activating it.
4. Unpair your Apple Watch. The iPhone-to-Apple-Watch pairing is hardware-bound; unpairing on the iPhone removes it cleanly.
5. Erase all content and settings. Settings → General → Transfer or Reset iPhone → Erase All Content and Settings. Confirm.
6. Remove cases and screen protectors. These don't affect trade-in value, but a clean device photographs better if you go the third-party route.
7. Charge the battery above 50%. Devices that arrive with low battery can be rejected by some carriers' automated inspection systems.

What are the common mistakes that reduce trade-in value?

Five to avoid:

1. Forgetting to sign out of iCloud / Find My. The trade-in partner cannot wipe a locked device. Apple explicitly says devices still signed in to iCloud will not be returned — they are recycled. You lose the device AND the trade-in credit.
2. Trading in a cracked screen "as-is." Most programs (Apple included) will downgrade cracked-screen devices to a "broken" tier, which can cut the value by 40-60%. If the screen is cracked, weigh whether a $150 screen repair vs. the lost trade-in value makes sense.
3. Not removing your case or accessories. Cosmetic condition matters for third-party marketplaces especially. A device in a clear case for two years will look much better than one in a leather case that absorbed pocket wear.
4. Trading in with Active AppleCare+. If you have AppleCare+ monthly, cancel it first to avoid continued billing on a device you no longer own.
5. Trading in to the wrong program. Apple Store walk-in trade-ins often give lower values than Apple's online program. If you can wait a few days for shipping, online is usually better.

What if I want to keep my old iPhone as a backup?

You don't have to trade in. There are three other paths that effectively give you "extra" device value without losing the phone:

1. Family Sharing setup — give the old iPhone to a family member. Apple no longer charges a setup fee for additional devices on Family Sharing.
2. Smart-home controller / media streamer — old iPhones make capable HomeKit hubs and Apple TV alternatives. Wipe it, set it up with your Apple ID, and use it as a dedicated living-room device.
3. Sell privately — Facebook Marketplace, Craigslist, or OfferUp typically net you 10-20% more than a trade-in program. The trade-off is time and the small fraud risk on private sales.

For most buyers upgrading on launch day, Apple GiveBack or carrier trade-in is the simplest and the credit is applied directly to the iPhone 18 purchase. Use the checklist above and the timing advice, and you should land within 5-10% of the best possible value for your device.