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Apple iPhone 17 Pro Max

Model A3257

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The Apple iPhone 17 Pro Max, released in 2025, is Apple's flagship phone for the year, sold under model number A3257 in the US and Canada. It was built for people who want the biggest screen, the longest battery life, and the most capable camera Apple offers in a given generation, along with anyone whose current phone is starting to lag on storage or battery health. Pro Max phones hold value longer than the rest of the lineup because the chip, camera hardware, and build quality stay useful for years after release, which keeps demand steady on the resale market. If you have one to sell, pick your carrier, storage size, and condition in the picker above for an instant cash offer. See how the process works, or head straight to the page to sell your iPhone if you already know what you're doing.

Confirm you have the iPhone 17 Pro Max

Go to Settings → General → About and check the Model Name and Model Number fields. The Model Name will read "iPhone 17 Pro Max," and the Model Number will show one of the identifiers below, sometimes prefixed with an "M" if you're looking at the box or SIM tray instead of the Settings menu. If the phone is disabled or you only have the retail box, the model number printed on the box (format MFXX4LL/A for US units) also maps to this device.

A3257

  • Primary US and Canada model number
  • Matches internal identifier iPhone18,2
  • Sold through AT&T, T-Mobile, Verizon, and unlocked

A3526

  • Regional variant of the same phone
  • Same internal hardware as A3257
  • May appear on units sourced outside the US

Prefer a visual check? The iPhone 17 Pro Max has a full-width camera plateau across the top back rather than a smaller square module, an aluminum frame instead of the titanium band used on the previous two Pro generations, and a rear-facing Camera Control button just below the power button in addition to the standard Action Button on the left edge.

Core hardware configurations

Processor

  • Apple A19 Pro chip
  • Same chip across every storage tier on this page

Storage

  • 256GB, 512GB, 1TB, or 2TB
  • Storage is soldered and fixed at purchase, not upgradable
  • 1TB and 2TB units bring the strongest resale return, since Apple charges a large premium for them new and buyers seek them out used

Cameras

  • Triple rear camera system: main, ultra-wide, and telephoto
  • TrueDepth front camera with Face ID
  • 4K video recording across all rear lenses

Display & audio

Display

A 6.9-inch Super Retina XDR OLED with ProMotion up to 120Hz and an Always-On mode, protected by Ceramic Shield front glass and framed by the Dynamic Island cutout instead of a notch.

Audio

Stereo speakers with spatial audio playback and support for Dolby Atmos when paired with compatible headphones. There is no headphone jack; audio out runs through USB-C or Bluetooth.

Security

Face ID is the only biometric option, using the TrueDepth camera array. There is no Touch ID or side-button fingerprint sensor on this model.

Ports & connectivity

The iPhone 17 Pro Max moved to USB-C with the iPhone 15 generation and has kept it since, with no Lightning port on any Pro Max model from 2023 onward.

Wired
  • USB-C
  • Nano-SIM tray or eSIM, depending on carrier and region
Wireless
  • 5G cellular
  • Wi-Fi 7
  • Bluetooth
  • MagSafe and Qi wireless charging
  • NFC for Apple Pay and accessory pairing

A19 Pro Dynamic Island ProMotion 120Hz Always-On display Ceramic Shield IP68 rated MagSafe USB-C

Battery, build & more

Battery

Rated for all-day use under normal conditions, with faster wired and wireless charging than earlier Pro Max models. Battery health matters more than almost any other single factor when a buyer is deciding between two used units at the same storage tier.

Build

Aluminum frame with a Ceramic Shield front and a textured glass or aluminum back, depending on finish, and an IP68 rating for dust and water resistance.

Software

Ships with the current version of iOS and is positioned for a long run of major iOS updates, which is part of why Pro Max phones keep resale demand for years past release.

Market positioning

This is Apple's top-tier phone for its release year. It commands the highest resale interest of any iPhone in this generation, particularly in higher storage tiers and unlocked carrier status.

Frequently asked questions

01 How do I find the model number or exact configuration?
Go to Settings → General → About on the phone itself. This screen lists the model name, model number, serial number, and storage capacity all in one place. If the phone won't turn on, check the original box, which lists the same model number near the barcode, or check the SIM tray, which is sometimes laser-etched with a shortened version of it. Carrier status (unlocked versus locked to AT&T, T-Mobile, or Verizon) is listed under Settings → General → About as well, next to "Carrier Lock," or you can ask your carrier directly.
02 How do I tell it apart from the iPhone 16 Pro Max?
Look at the back of the phone first. The iPhone 17 Pro Max has a camera plateau that runs the full width of the upper back, while the iPhone 16 Pro Max has a smaller, squared-off camera module confined to the corner. The frame material is also different: the 17 Pro Max uses aluminum, while the 16 Pro Max uses a titanium band. If the case is off and you still aren't sure, Settings → General → About settles it immediately, since the model name and model number are both listed there and won't be ambiguous.
03 Can I sell it with damage, a locked screen, or a dead battery?
Yes, in most cases. A cracked screen, a weak battery, or a phone that won't power on still has resale and parts value, and the condition picker above accounts for this. What we cannot accept is a phone still tied to Activation Lock. Before you ship anything, go to Settings → General → Transfer or Reset iPhone → Erase All Content and Settings, and confirm you've signed out of iCloud so Find My iPhone is fully disabled. A phone still under carrier contract or attached to a corporate mobile device management account can complicate the sale too, so check both before sending it in.
04 What raises the trade-in value the most?
Storage tier and unlock status move the offer the most. A 1TB or 2TB unit will quote noticeably higher than a 256GB one in the same condition, and an unlocked phone is worth more than one still tied to a single carrier, since it can go to any buyer. Beyond that, battery health, a screen free of cracks, and having the original box and cable all help. Clean IMEI status matters too: if the phone is reported lost, stolen, or still financed, that will affect what we can offer.
05 How do I erase it and get paid?
Start with a backup if you want to keep your data, then go to Settings → General → Transfer or Reset iPhone → Erase All Content and Settings. When prompted, sign out of iCloud so Find My iPhone and Activation Lock are both cleared, and remove the SIM if it's a physical one. If the phone is on a payment plan or still under contract, confirm that with your carrier first, since an active balance can trigger a carrier lock even after reset. Once it's wiped, ship it to us free and insured. We test it on arrival and pay by PayPal, Venmo, Zelle, CashApp, or check. Full erasure steps for every platform we buy are on our data erasure protocols page.