While features, camera capabilities, and raw performance are always at the top of the list when it comes to the defining characteristics of any decent smartphone, this year, thickness has been a big part of the conversation too.
Samsung’s wafer-thin Galaxy S25 Edge finally made it to market (and the iPhone 17 Air is seemingly on the way soon), but the battle for the title of “world's thinnest phone” has been hottest among the best foldable phones.
As far as book-style foldables go, Oppo has held the crown for most of 2025 with the Oppo Find N5. It’s an exceptional smartphone that might utilize the unique benefits of its form factor better than even the new Galaxy Z Fold 7.
But for everything I love about Oppo’s entry, it isn’t the thinnest anymore, at least not according to the companies behind these fresher-faced rivals (the Huawei Mate XT tri-fold notwithstanding).
Alongside the Samsung, there's the upcoming Honor Magic V5, which is scheduled to go on sale internationally at the end of August.
Honor proudly proclaims that the V5 is the “world’s thinnest phone" in the "book-style" foldable category, but some have suggested that the Galaxy Z Fold 7 is, in fact, the design king.
So, in this article, I've decided to compare all three phones – the Galaxy Z Fold 7, the Magic V5, and the Find N5 – to see which is *really* the thinnest.
If a phone’s going in your pocket... that [camera] bump matters
I bought digital calipers specifically to fact-check these devices' dimensions, running the same measurement points across all of them; including ones the manufacturers don’t mention – like thickness with the camera bump – because, if a phone’s going in your pocket, or you’re placing it down on a flat surface, that bump matters.
Let's get into it...
Oppo Find N5
Starting with the marginally older Find N5, Oppo states that it's 8.93mm thick when closed and just 4.21mm when open. Immediately, I wasn’t able to get close to these numbers.
In my tests, my closed Find N5 clocked in at 9.17mm – that’s 0.24mm thicker than Oppo’s claims. Factor in the phone’s circular triple camera bump, and that measurement grows to 13.8mm.
Fold the N5 open, and you’re presented with the largest and sharpest display of these three phones. In this orientation, the Oppo clocked in at 4.36mm at its thinnest, while factoring in the surrounding frame raised the thickness to 4.43mm. Not numbers that Oppo cites, but still undeniably slim, regardless.
Honor Magic V5
Next up is the Magic V5. Honor has not stopped shouting about its new foldable since its initial unveiling, and despite an impressive-sounding (and record-breaking) 4.1mm thickness on the Ivory White model – which was, thankfully, the unit provided to me – the company has already had to defend this claim numerous times.
As such, I wasn’t expecting to reach that magic number, but I also wasn’t ready for V5 to come in thicker than the Oppo. The best measurement I managed to get was 4.47mm; 0.11mm thicker than what I recorded for the N5 when open. Account for the frame, and that figure rose to 4.5mm.
Closing the V5, I logged a thickness of 9.39mm, which rose to a whopping 16.53mm when you take into account that deep triple rear camera array.
On the one hand, these numbers actually render the V5 the thickest of the three phones. But practically speaking, provided you can get on with the bump in your pocket, they allow for a great grip, especially when gaming and the like.
Samsung Galaxy Z Fold 7
Finally, the newcomer – the Samsung Galaxy Z Fold 7. In the flesh, it looks distinctly different from the other two rivals; it's far sharper and more squared, in contrast to the rounded forms and curved edges of the Oppo and Honor. It looks slimmer by eye, too.
Despite Samsung not really making any bold claims, and despite my measurements falling short of the phone’s official quoted thickness, the Z Fold 7 still came in as the thinnest of these three foldables, at 4.35mm when open and 9.16mm when closed; pipping the Find N5 to the post in each instance by just 0.01mm (without making any allowances).
Add in that camera bump – which is led by a new 200MP sensor – and the Galaxy Z Fold 7 falls to the middle of the pack. However, the sensors' offset positioning does make the phone far more unbalanced than the other two entries when placed on a flat surface, which might bother some people in certain situations (users on Reddit have already come up with some novel ideas to combat the Fold 7's significant wobble).
It's also worth noting that Samsung ditched stylus support on the Fold 7 to deliver improved durability, which is something neither the Honor nor Oppo had to sacrifice with their latest foldables.
Results
Looking at the final results, you can see that – despite Honor’s claims – based on my measurements, the Magic V5 actually proved to be the thickest, with the Oppo and Samsung in a close-fought battle for the title of ‘world’s thinnest’, which the Z Fold 7 won by a hair.
| Header Cell - Column 0 | Oppo Find N5 | Honor Magic V5 | Samsung Galaxy Z Fold 7 |
|---|---|---|---|
Official thickness (open): | 4.21mm | 4.1mm (white model only) / 4.2mm | 4.2mm |
Measured thickness (open): | 4.36mm | 4.47mm | 4.35mm |
Official thickness (closed): | 8.93mm | 8.8mm (white model only) / 9.0mm | 8.9mm |
Measured thickness (closed): | 9.17mm | 9.39mm | 9.16mm |
Measured thickness (closed inc. camera bump): | 13.8mm | 16.53mm | 14.68mm |
Conclusion
Of course, you’re probably not buying any of these phones for their wafer-thin profiles alone, and as such, there are practical reasons to opt for all three.
Samsung’s latest foldable comes with the cleanest-looking hardware, the longest software support – at seven years – the widest global availability, and the most dependable customer service, which is important in the event that something goes awry.
Even though it’s harder to get ahold of (at the time of writing, it's only available in Asia), the Find N5 gets my vote as the overall best foldable of the three, as I think the Oppo makes the best use of the foldable form factor.
You get ColorOS' excellent Open Canvas-powered multitasking, macOS interoperability with Remote Control via O+ Connect, and some of the smartest dynamically-surfaced AI features out there; not to mention stylus support.
And if you’re after the best specs and the biggest numbers, the Magic V5 has the most bombast. It boasts an impressive-looking camera setup, the largest battery, and the most diverse set of colorways to choose from.
We'll be posting our full review of Honor's latest foldable later this month, so stay tuned to see how it stacks up against the Galaxy Z Fold 7 and Find N5 in terms of both hardware and software.
You might also like...
You must confirm your public display name before commenting
Please logout and then login again, you will then be prompted to enter your display name.