# Lanhiem CXFM-I18S Waterproof Magnetic Case for iPhone 18 Pro Max

The Lanhiem CXFM-I18S is listed as a waterproof magnetic case for iPhone 18 Pro Max, with a built-in screen protector and camera cover. Its full-body design targets buyers who want covered screens and lenses as well as claimed water and dust protection, but the listing gives no independent test evidence.

- [Original product page](https://bargainpostbox.co.uk/product/lanhiem-cxfm-i18s-iphone-18-pro-max-waterproof-case)
- [View offer](https://bargainpostbox.co.uk/visit/lanhiem-cxfm-i18s-iphone-18-pro-max-waterproof-case)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: Lanhiem
- Model: CXFM-I18S
- Category: Electronics > Electronics Accessories > Cases & Screen Protectors
- Price: 21.84 GBP
- Previous price: 25.99 GBP
- Discount: 16%
- Price checked: 2026-11-14T19:29:38.677Z
- Rating: 4.1 / 5
- Reviews: 3636

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Listing describes a built-in screen protector and rear camera cover as part of its full-body design.
- Manufacturer claims an integrated magnetic ring compatible with MagSafe accessories and wireless charging.
- Waterproof and dustproof protection is claimed, with submersion stated up to 6.6 feet for 60 minutes, subject to following the instructions and testing before use.
- Textured, angled stripes are described as a grip feature.
- A two-year warranty is listed.

## Pros

- Built-in screen and camera protection means buyers need not rely on separate case openings for those surfaces.
- Magnetic compatibility is claimed for MagSafe accessories and wireless charging.
- The case is promoted for full-body coverage, including water and dust protection.

## Cons

- A full-body shell with an integrated screen protector may not suit buyers who prefer an uncovered screen or a slimmer case.

## Specifications

### Identity
- Brand: Lanhiem
- Model: CXFM-I18S
### Display and fit
- Screen size: 6.9 Inches
- Dimensions listed: 18 x 9 x 1 centimetres
### Materials and protection
- Water resistance listed: Waterproof
- Material listed: Plastic
### Design and compatibility
- Compatible device: iPhone 18 Pro Max
- Colour: Black
- Pattern: Striped
- Finish: Matte

## Before you buy

- The manufacturer says to conduct a waterproof test according to the instructions before use. The stated submersion limit is a manufacturer claim, not an independently verified result.
- The listing claims compatibility with iPhone 18 Pro Max, but customer feedback supplied for this listing refers to a Samsung S9+ and reports mixed fit and touchscreen experiences. Confirm the exact phone fit and treat that feedback as not clearly attributable to this model.

## In the box

- Case (Check selected pack): Mentioned by the listing, but no explicit package contents inventory is provided.

## A good fit for

- iPhone 18 Pro Max owners seeking a case with screen and camera covers built in.
- Buyers who want magnetic accessory compatibility and a grippy, full-body case.
- People considering a water- and dust-protection case who are willing to follow its pre-use test instructions.

## Less suited to

- Buyers seeking a slim case or an uncovered screen.
- Anyone needing independently confirmed waterproof performance or verified fit information before purchase.

## Customer feedback

Customer feedback supplied with this listing describes positive impressions of quality, durability and protection, including a report of surviving repeated water immersion. Fit, touchscreen sensitivity and ease of use are mixed. However, the supplied comments refer to a Samsung S9+, not the listed iPhone 18 Pro Max case, so they cannot establish how this model fits or performs. The aggregate ratings are favourable overall but include a notable low-star share, and do not explain the reasons behind ratings.
- Positive themes: Feedback describes quality and durability positively.
- Positive themes: Some supplied feedback praises protection and functionality.
- Mixed feedback: Fit, touchscreen sensitivity and ease of use receive mixed feedback in the supplied comments, but those comments concern a Samsung S9+ rather than the listed iPhone case.

## Frequently asked questions

### Which phone is this case listed for?
The listing identifies the compatible device as iPhone 18 Pro Max. It also contains a broad “for iPhone” entry, so confirm your exact model before ordering.
### What water protection does the listing claim?
The manufacturer claims IP68 protection and submersion up to 6.6 feet for 60 minutes. It instructs buyers to perform a waterproof test according to the instructions before use. These are listing claims, not independently verified results.
### Does the case include screen and camera protection?
The feature description claims a built-in front screen protector and rear camera cover.
### Is it compatible with MagSafe?
The listing claims an integrated magnetic ring compatible with MagSafe accessories and wireless charging.

## Offer details

- Waterproof claims are conditional on following the instructions and conducting the stated pre-use test.

## Alternative options

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- [for iPhone 18 Pro Max Waterproof Case \| Screen Protector \|Fit for Magsafe \| Waterproof for MagSafe Built-in Screen & Camera Protector Full Body Shockproof Protective Phone Cover for iPhone 18 Pro Max](https://bargainpostbox.co.uk/visit/lanhiem-cxfm-i18s-iphone-18-pro-max-waterproof-case)
- [JETech 360° Full Body Magnetic Case for iPhone 18 Pro, Dark Cherry \| Compatible with MagSafe, Shockproof, Built-in Tempered Glass Screen Protector and Camera Control Button, Anti-Slip Grip](https://bargainpostbox.co.uk/visit/lanhiem-cxfm-i18s-iphone-18-pro-max-waterproof-case)
- [Miracase for iPhone 18 Pro Case Full-Body Bumper and Glass Screen Protector \| Black丨Full Body Protection丨Magnetic with MagSafe丨Camera Area Protect&Camera Control丨Mil-Grade Shockproof Phone Case 18 Pro](https://bargainpostbox.co.uk/visit/lanhiem-cxfm-i18s-iphone-18-pro-max-waterproof-case)
- [CENHUFO Designed for iPhone 18 Pro Case Built-in Screen Protector -Burgundy \| Fits for MagSafe, Built-in Glass Screen Protector, Clear Back Cover, Camera Protect, 360 Full Body Bumper 18 Pro Phone Case](https://bargainpostbox.co.uk/visit/lanhiem-cxfm-i18s-iphone-18-pro-max-waterproof-case)
- [TOCOL for iPhone 18 Pro Case with 360° Magnetic Stand, Black \| Compatible with MagSafe, Embedded Kickstand, Full Camera Protection, Military Grade Shockproof, Slim Translucent Matte Cover](https://bargainpostbox.co.uk/visit/lanhiem-cxfm-i18s-iphone-18-pro-max-waterproof-case)
- [Miracase For iPhone 18 Pro Max Case, Full Body With Glass Screen Protector \| 6.9", \[Clear\] Full-Body Protection, Camera Control, Anti-Drop Shockproof Holster, Magnetic Case, Compatible with MagSafe](https://bargainpostbox.co.uk/visit/lanhiem-cxfm-i18s-iphone-18-pro-max-waterproof-case)
- [seacosmo Magnetic for iPhone 18 Pro Max Case Privacy Full Body Bumper Black \| Fit for MagSafe, Built in Camera Lens Protector Shockproof Bumper Drop Proof 360 Dual‑Layer Rugged Military Grade Phone Case](https://bargainpostbox.co.uk/visit/seacosmo-scuk-i18pm-b-magnetic-privacy-case)

## Images

![Lanhiem CXFM-I18S Waterproof Magnetic Case for iPhone 18 Pro Max — 1](https://bargainpostbox.co.uk/i/WY-IgGGUtJU8wKR6bWdb1eHFeyz-yKwT9UVYW0p-KMbBQ1cT1UxxU13PCV3oL950oE9HbGqKSRz1PicdBHNDOqL6GiUmuRFvRynVY7pgJfwQz9O0vQ5POzDP.jpg)

![Lanhiem CXFM-I18S Waterproof Magnetic Case for iPhone 18 Pro Max — 2](https://bargainpostbox.co.uk/i/e7cM9JO6ZsDMQ6cwGGRGZEHPCirh0t6b6zRsvAhMk5l5jJWDXIBLpeXCIWAbjjv6mMhxZH_iYe6DuBZcmTLObsvj-aTS-BnNCSMzM1OM_-uv9M-VlWEabOPz.jpg)

![Lanhiem CXFM-I18S Waterproof Magnetic Case for iPhone 18 Pro Max — 3](https://bargainpostbox.co.uk/i/Qn1xlOf4uo2kz_OjcebOJVMU8n28BpQKBOMqgwnNAQN1Fdi_RAgO8crmfxRd9agJkXuv_dqXkPhlprJtP00pAoCAqVUnIGBzmH0ZWlUYTtLY-Ei7Um3h7hub.jpg)

![Lanhiem CXFM-I18S Waterproof Magnetic Case for iPhone 18 Pro Max — 4](https://bargainpostbox.co.uk/i/4-Y9Xe3q0glbcb9nliN5VGTUQcUv5dqZxAOZRIKjSGWBMYZQtUVyNEyQZWpw14eJFcEq6KXARgHqTP2rR04XXlPAr-0y2SNHIqkQnEuav2eYmI5reiSZYQ9y.jpg)

![Lanhiem CXFM-I18S Waterproof Magnetic Case for iPhone 18 Pro Max — 5](https://bargainpostbox.co.uk/i/BMkAPSm5ArkivN3FgeIl1APRe3DNXBm1Oo__PSEKMQiI4EF5Zz9_1iq0PTxtMo49MTaBhD7a1tUizy6QVF5O9jAKupzTPNvBFwsm_oqEbVRaDi5MdEyFsQRi.jpg)

![Lanhiem CXFM-I18S Waterproof Magnetic Case for iPhone 18 Pro Max — 6](https://bargainpostbox.co.uk/i/JxAOpb5bp24npoRN2ipjBoSC7Isb7SE2lcWZVNyPqOcsb-KJbNS-L1Z3N8xONGvYzPDvxZIqQ_QLtHKPkvUvOdFmI5DWHVgioPL59kgcDNcKPvtT77Cv7BV7.jpg)

![Lanhiem CXFM-I18S Waterproof Magnetic Case for iPhone 18 Pro Max — 7](https://bargainpostbox.co.uk/i/Me19-WlqgBm3V7n6-Ou2VhlmFuA29k4MJVtU6_Uf4XOZftTDqhk1j03J98oTuqUC3gYwqpvxvgg5SXMkYThAnzNvkv3ZrOZTwjNh1SPUphK8iWg94U39Qhlz.jpg)