Sell iPhone 15 Pro Max 256GB in the UK

The Ultimate Flagship. The Ultimate Trade-In Experience.

The iPhone 15 Pro Max 256GB is Apple’s most advanced iPhone to date. With a titanium chassis, A17 Pro chip, 5x telephoto lens, and a 6.7-inch Super Retina XDR display, it's a smartphone built for power users and mobile creatives. If you're ready to upgrade or cash in, this model offers exceptional trade-in value — especially when sold early.

At Sell.Zextons, we help you turn your premium device into fast cash with an experience that’s just as seamless as the iPhone itself. Get a real-time valuation, enjoy free Royal Mail tracked delivery, and receive same-day UK payment directly to your bank account.

Why the iPhone 15 Pro Max 256GB Resells So Well

• Positioned at the top of Apple’s 2025 lineup
  
  

• Larger display and exclusive camera features make it highly desirable
  
  

• 256GB storage hits the sweet spot between capacity and affordability
  
  

• High second-hand demand and limited supply = stronger resale value
  
  

• Early sellers always earn more before seasonal price drops occur
  
  

Why Sell to Sell.Zextons?

• Instant quote — no account required
  
  

• Royal Mail insured and tracked shipping included
  
  

• Same-day bank transfer after approval
  
  

• No fees or deductions — what we quote is what we pay
  
  

• Trusted UK-based platform with verified payouts and secure processing
  
  

When you're selling a flagship, you deserve a flagship selling experience.

How It Works – Fast, Secure & Straightforward

Step 1: Get a Quote

 Use our online tool to enter your phone’s condition, storage, and unlock status. You’ll receive a quote instantly.

Step 2: Send It for Free

 We provide a Royal Mail prepaid tracked shipping label, fully insured. Pack it, post it, done.

Step 3: Get Paid the Same Day

 Once we’ve inspected and approved your phone, the full amount is transferred to your UK bank account on the same working day.

What Affects the Trade-In Value?

We assess based on:

• Condition – from pristine to lightly used
  
  

• Functionality – must power on and work as expected
  
  

• Network status – unlocked models typically receive higher offers
  
  

• Storage capacity – 256GB balances premium resale with wider buyer appeal
  
  

• Included accessories – not required, but box/charger may slightly improve your quote
  
  

Why Selling Now Is Smart

Flagship iPhones like the 15 Pro Max hold value well — but not forever. As newer models launch and second-hand listings increase, trade-in prices gradually drop.

Selling now helps you:

• Lock in the highest possible resale value
  
  

• Get paid quickly and securely
  
  

• Avoid the depreciation curve
  
  

• Make space for your next upgrade
  
  

Related Trade-In Pages

• Sell Apple iPhones
  
  

• Sell iPhone 15 Series
  
  

• Sell My Phone UK – Also trade in Samsung, Pixel, OnePlus & more
  
  

Frequently Asked Questions

How much is my iPhone 15 Pro Max 256GB worth in the UK?

 Depending on condition and network status, you could receive up to £800 or more. Use our instant quote tool for your personalised offer.

Is shipping really free and secure?

 Yes. We offer fully tracked and insured Royal Mail shipping, at no cost to you.

Do I need the original charger or box?

 Not necessary — but including them may slightly improve your final quote.

When will I get paid?

 Once your phone is approved after inspection, we issue payment the same working day.