Compare the latest Apple iPhone 18 Pro Max deals from 4 UK networks. Filter by data, contract length and upfront cost, and plant trees with every switch.
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Mobile deal data is fetched live from our data platform each time you search or filter, so listings reflect the latest information networks have supplied. Prices and offers can change and may occasionally differ on the network's own website; the network's checkout price is the one that applies. Coverage and speeds vary by network and location, so check Ofcom's mobile coverage checker before you switch. We compare deals from a significant share of the UK market, but no comparison site covers every deal from every network. See how we compare for the networks we include and how results are ranked.
The iPhone 18 Pro Max is the biggest iPhone Apple makes: a 6.9-inch screen, a 5391 mAh battery and the same 48MP Fusion camera as the standard Pro, in a 249g body running iOS 27. Deals start from £21.00 a month.
Key takeaways
Key features
The Pro Max is for people who put screen size and battery life above almost everything else. At 6.9-inch, its display is the largest Apple offers, and the 5391 mAh battery is built to match, easily the longest-lasting iPhone in the current range. The trade-off is size and weight: at 249g, it's the heaviest phone in the lineup, and noticeably less pocketable than the standard Pro. If you watch a lot of video, read on your phone, or simply run your battery down hard every day, that weight is worth carrying. If you'd rather have something lighter in your hand, look at the Pro instead.
The camera hardware is identical to the standard Pro: a 48MP Fusion triple camera covering wide, ultra-wide and zoom, plus an 18MP Multi-aspect selfie lens for video calls and Face ID. What changes is the canvas you view it on. The 6.9-inch display gives editing, gaming and video noticeably more room to work with than the smaller Pro screen, which matters if you spend real time reviewing photos or watching content on the device itself. Photographers get no extra lens here; what they get is a bigger window onto the same shots.
Running iOS 27, the Pro Max handles anything you throw at it without slowing down. Its real advantage is the 5391 mAh battery, close to a third larger than the standard Pro's, which is built to carry heavy daily use through to the evening with room to spare. That capacity is also part of why the phone weighs 249g. If battery anxiety is what pushed you to consider a Pro model in the first place, this is the one built to solve it.
The iPhone 18 Pro runs the same 48MP camera system and iOS 27 software in a smaller 6.3-inch screen, a lighter 211g body and a 4056 mAh battery. Pick the Pro Max if the bigger display and longer battery life matter more to you than carrying less weight. Pick the standard Pro if you'd rather have the same camera and software in a phone that's easier to manage one-handed.
Storage spans 256GB, 512GB, 1024GB and a new 2048GB tier, with no memory-card slot to add more later. Most people are well served by 256GB. The 2048GB tier is a genuinely specialist option: it suits people who film extended 4K video, carry large offline game libraries, or use the phone as their only storage device while travelling. For nearly everyone else, 1024GB is already more than you'll fill.
Pros
Cons
Our verdict
The iPhone 18 Pro Max is the right buy if you want the biggest screen and the longest battery life Apple offers, but the standard Pro does the same job for less weight.
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