How to Sell Your iPhone 17 Pro Max (Before iPhone 18 Pro Max)

Flagship phones commonly lose 30 to 50% of their resale value within the first 12 months after a new model launches (source: BuyBackBear price-history tracking and industry resale data). For the iPhone Pro Max line, that loss happens in stages: a modest softening in the weeks before Apple’s fall announcement, a sharper step-down on announcement day, and another drop when pre-orders open.

Selling in July or August 2026, before Apple confirms the iPhone 18 Pro Max, captures the highest point in that cycle. After Apple’s September event, you’re selling into a market where buyers can choose between your 17 Pro Max and a brand-new 18 Pro Max. Quotes reflect that reality.

As of July 2026, realistic ranges at reputable mail-in buyback services for an iPhone 17 Pro Max in good condition:

• 256GB, unlocked, good condition: approximately $560 to $730
• 512GB, unlocked, good condition: approximately $620 to $810
• 1TB, unlocked, good condition: approximately $700 to $880

Screen damage cuts offers by 35 to 50%. Carrier-locked units fetch $40 to $80 less than unlocked equivalents. Get a real-time quote on BuyBackBear to see today’s locked numbers. Learn how phone valuations work if you want to understand the factors behind the spread.

Not all selling channels pay the same. Here’s an honest ranking:

• Mail-in buyback services: Locked quote, free prepaid shipping, certified data erasure, and payment within one to two business days of inspection. Best balance of payout and effort. Start a quote on BuyBackBear.
• Peer-to-peer (eBay, Swappa): Highest ceiling on a pristine, boxed unit, sometimes $50 to $150 more than a buyback offer net of fees, but requires listing time, fielding buyers, handling shipping, and absorbing returns.
• Carrier trade-in: Fast and convenient, but carrier programs pay bill credits, not cash, spread over 24 to 36 months, forfeited if you leave the carrier. Worst option for net value.
• Apple Trade In: Store credit only, redeemable on Apple purchases. Typically 15 to 30% below third-party buyback services for the same device and condition.

Proper preparation protects your data and maximizes your offer. Follow these steps before you ship:

1. Back up everything. Use iCloud backup or connect to a Mac or PC and back up via Finder. Verify it completed before moving forward.
2. Disable Find My and sign out of iCloud. Go to Settings → [Your Name] → Sign Out. If Find My is still active, the new owner cannot activate the phone, most services reject it or discount it heavily. The Apple Support site has step-by-step instructions for removing Activation Lock.
3. Factory reset. Settings → General → Transfer or Reset iPhone → Erase All Content and Settings. Takes 10 to 20 minutes. See our full iPhone wipe guide for the complete walkthrough.
4. Assess condition honestly. Note any cracks, scratches, or functional issues. Overgrading leads to revised offers on inspection.

Per the FTC’s guidance on phone data security, a factory reset is the minimum step before selling any smartphone.

These are the most common missteps among sellers:

• Waiting until after the announcement. The single most expensive mistake. Quotes available in August will not be available in late September.
• Only checking one buyback service. The spread between the best and worst offer for the same flagship regularly exceeds $100. One extra quote takes two minutes.
• Forgetting Activation Lock. A phone with Find My still enabled cannot be activated by a new owner. Services either reject it or reduce the offer to cover extra processing.
• Overestimating condition. Most people rate their phone a grade or two higher than an inspector would. Scratches on the frame, a scuffed corner, or a slight screen mark all affect grade, note them for an accurate quote.

In order:

1. Back up your phone (iCloud or Mac/PC Finder).
2. Disable Find My: Settings → [Your Name] → Find My → toggle off.
3. Sign out of iCloud: Settings → [Your Name] → Sign Out.
4. Factory reset: Settings → General → Transfer or Reset iPhone → Erase All Content and Settings.
5. Get a quote on BuyBackBear and compare it against one or two other services.
6. Accept the best offer and ship with the provided prepaid label.
7. Expect payment one to two business days after inspection.

The entire process from first quote to payment typically takes under a week. See our guide on the iPhone 17 Pro (non-Max) for the same checklist applied to that model.