Would you buy a smartphone that's thinner than 5 mm?

In the race to create the world’s slimmest smartphone, manufacturers are seemingly forgetting that they shouldn’t eliminate (or compromise on) essential features just to push the boundaries of thinness a little bit further than their competitors.

iPhone 6, Samsung Galaxy Alpha, Samsung Galaxy A5, Samsung Galaxy A3 - these are all very thin smartphones (under 7 mm), but they’re still thick enough to accommodate a 3.5mm headset jack. However, even thinner handsets - like the 4.85 mm Oppo R5 (pictured above), or the 4.75 mm Vivo X5 Max - are simply too skinny for this, thus leaving out a feature that not many smartphone users can live without. Sure, the Oppo R5 ships with a USB-to-3.5mm audio adaptor, but that’s not really the same thing. There's a couple of other problems with ultra-thin handsets: their batteries can’t be too large (likely not being able to last long on a single charge), and their cases are more prone to bending following normal usage.

With all this in mind, we want to ask you if you’d buy a smartphone that’s thinner than 5 mm - assuming you could do it without having to import it from another country. Cast your votes below, and weigh in in the comments if you have more to say about ultra-thin handsets (either in their defense, or against them).

Tello Halloween Promo: $10GB for $10/mo

Don’t miss this scary-good deal: 10 GB for $10/mo. Save $5/mo for your first 3 months. Offer valid now through November 9, 2026.

Grab this Offer