iPhone 18 Pro, Pro Max & iPhone Duo Repair Parts UK: Complete 2026 Guide

Apple's 2026 flagship range creates three very different repair profiles. The iPhone 18 Pro uses a 6.3-inch OLED display, the iPhone 18 Pro Max moves to 6.9 inches, and the iPhone Duo adds a 7.6-inch folding inner OLED plus a separate 5.4-inch outer OLED. Those differences mean screens, housings and many model-specific parts must be treated as separate components, even when the devices share the A20 Pro chip.

For UK repair buyers, the most important rule is simple: buy by exact model, not by family name. An iPhone 18 Pro part should not be assumed to fit the Pro Max, and neither Pro model should be treated as mechanically interchangeable with iPhone Duo.

What are the main iPhone 18 repair parts people are likely to need?

The highest-intent repair categories are display assemblies, batteries, rear camera lens glass, camera modules, USB-C charging components, speakers, microphones, buttons, back glass or housing components and small flex cables. Availability will vary by supplier and by how recently each model launched.

At the time this guide was prepared, E-Tech61 had established product coverage for earlier iPhone generations but no publicly indexed iPhone 18 Pro, iPhone 18 Pro Max or iPhone Duo repair-part listing. That means buyers should not assume stock, price or grade until a live product page is visible.

iPhone 18 Pro vs Pro Max vs iPhone Duo: repair-relevant specifications

The table is useful for identification, but it is not a parts interchangeability chart. Matching display technology or connector standards does not mean two components fit each other.

Which screen does the iPhone 18 Pro use?

The iPhone 18 Pro uses a 6.3-inch Super Retina XDR OLED panel at 2622 x 1206 pixels and 460 ppi. It supports ProMotion up to 120Hz, Always-On display, True Tone, HDR and up to 3,000 nits peak outdoor brightness according to Apple.

If you are sourcing an iPhone 18 Pro screen replacement, check whether the listing is an OLED assembly, whether it preserves the features you care about, whether the digitiser is included, and whether any frame is pre-fitted. Do not assume a cheaper LCD substitute will reproduce the original panel's behaviour.

Read the dedicated guide: iPhone 18 Pro screen replacement UK.

Which screen does the iPhone 18 Pro Max use?

The Pro Max uses a 6.9-inch OLED panel at 2868 x 1320 pixels and 460 ppi. Its larger display means the physical assembly is not interchangeable with the 6.3-inch Pro screen.

Read: iPhone 18 Pro Max screen replacement UK.

Why is iPhone Duo repair a separate category?

Apple's first foldable iPhone uses two displays and a precision hinge. The inner panel is a 7.6-inch folding OLED with a nano-texture finish, while the outer display is a conventional 5.4-inch OLED. The device also uses a dual-battery system and Touch ID in the side button.

That architecture creates additional repair variables: inner display, outer display, hinge area, flex paths through the fold, dual batteries and the physical relationship between the two halves. A conventional flat-iPhone repair assumption should not be applied automatically to Duo.

Read: iPhone Duo screen replacement UK.

Do iPhone 17 Pro parts fit iPhone 18 Pro?

Do not assume they do. The iPhone 17 Pro and 18 Pro may share a 6.3-inch class display, but model generation, panel design, connectors, housing geometry, camera layout and calibration requirements can change. The same warning applies to Pro Max parts.

If a seller advertises one part for multiple generations, the listing should name the exact supported models. When it does not, treat compatibility as unverified.

What should a UK repair buyer check before ordering?

1. Confirm the exact iPhone model in Settings > General > About or by its model number.
2. Match the product listing to the exact model and generation.
3. Check what is included: panel only, display plus digitiser, frame, adhesive or tools.
4. Check whether the listing identifies the screen technology rather than using “LCD” as a generic term.
5. Check returns terms before opening protective films or fitting the part.
6. Test a replacement component before final sealing where the repair process allows it.
7. Use a technician for complex repairs if you are not experienced with modern iPhone disassembly.

For a broader explanation of replacement panel grades, see OLED vs LCD replacement screens: which should you buy?.

What about batteries, cameras and USB-C parts?

Apple does not publish battery capacity in mAh on the iPhone 18 Pro specification page, so a parts seller should not invent or repeat an unverified capacity figure. What Apple does publish is usage and charging performance: up to 34 hours video playback for iPhone 18 Pro and up to 43 hours for Pro Max, plus fast-charge support.

For component-specific guidance, use these pages:

• iPhone 18 Pro and Pro Max battery replacement guide
• iPhone 18 Pro and Pro Max camera lens replacement guide
• iPhone 18 Pro and Pro Max USB-C charging port repair guide
• iPhone 18 Pro, Pro Max and iPhone Duo model-number compatibility guide

Is “iPhone 18 Duo” the correct model name?

No. Apple's official name is iPhone Duo. Some users may search for “iPhone 18 Duo” because it launched alongside the iPhone 18 Pro generation, but product pages and compatibility descriptions should use the official name to avoid confusion.

Buying iPhone 18 repair parts in the UK

For E-Tech61, the strongest approach is to publish verified product pages as stock arrives and link this hub to those exact parts. Until a part has a live listing, do not publish a price, promise availability or imply that a component is in stock.

Browse E-Tech61's current mobile phone parts range at E-Tech61 and use the model-specific guides above before ordering.

FAQ

Are iPhone 18 Pro and iPhone 18 Pro Max screens interchangeable?

No. They use different display sizes and physical assemblies: 6.3 inches on Pro and 6.9 inches on Pro Max.

Does iPhone Duo use the same screen as iPhone 18 Pro Max?

No. Duo uses a 7.6-inch folding inner OLED and a separate 5.4-inch outer OLED.

Can I use an iPhone 17 Pro screen on iPhone 18 Pro?

Do not assume compatibility. Only use a part listing that explicitly states support for the exact model.

What is the UK iPhone 18 Pro model number?

Apple lists A3714 for “other countries and regions”, which includes the UK variant referenced in Apple's UK documentation. Pro Max is A3717; iPhone Duo's UK technical specifications list A3720.