Concept: Humanly Phone, 5.4 mm and does less
A sketch of a very thin, calm phone with a true-black AMOLED screen, a short list of tools and no app store. What it does, what it leaves out, and how the numbers might work.
Most of us pick up our phones around a hundred times a day, and only a handful of those pickups start with an actual reason. We wanted to draw the opposite device. A phone you reach for when you need to call someone, check a route or take a photo, and then put down because there is nothing left to do.
This is a concept. We are a small software studio, not a phone maker, and nothing on this page is for sale or in production. We sketched it because designing the hardware forces you to be honest about the software. Every feature you add needs battery, space and attention, and a thin object makes those trade-offs impossible to ignore.
What it does
The Humanly Phone has a short list of tools, and the list is the home screen. There is no grid of icons and no folders. You see the time, anything that genuinely needs you, and then eight words:
- Phone and Messages, including group texts and voice notes.
- Directions, turn by turn, with offline maps for the places you choose.
- Camera, one lens, no filters, photos sync to your computer over USB or Wi-Fi.
- Notes, plain text, with a voice memo button.
- Alarm, Music and Hotspot, because you will still need a laptop sometimes.
That is the whole thing. No browser, no email, no feeds and no app store. Two-factor codes arrive as texts or come from a hardware key. Banking stays on your laptop, where a bigger screen makes it harder to make mistakes anyway.
People have been building phones like this for a while, and the Light Phone in particular showed that a real group of people will pay for less. What we wanted to explore was a different feel. The Light Phone leans on e-ink and a soft, paper-like presence. We wanted something that feels like a precise tool: very thin, cold metal, a screen that is black until it has something to say.
A black screen that means something
An AMOLED panel lights each pixel on its own. A black pixel is switched off, which means it uses no power and gives off no light. So the whole interface is black, with text in off-white and one orange accent for the thing that matters right now. On most screens there are fewer than a hundred lit characters.
That choice does two jobs. It saves battery, since a mostly dark AMOLED screen draws far less than a bright, busy one. It also makes the phone quiet to look at. There is nothing moving, nothing autoplaying and no red badges. When the orange dot appears next to MESSAGES, it means someone wrote to you, not that an app would like you to come back.
We did seriously consider e-ink. It is lovely to read and even easier on power. For this concept we kept AMOLED because calls, maps and the camera viewfinder all need a fast, sharp screen, and because the phone should feel like a modern object rather than a retreat. We will come back to that decision in April with a proper comparison, because it is the most interesting argument in the whole design.
Why 5.4 mm
Thinness is not the point of the phone, but it is a useful constraint. When a device is this thin you cannot hide a large battery, a stack of cameras or extra radios inside it. The shape itself keeps the feature list honest.
Here is how the layers could add up. The numbers are estimates from public teardowns of thin phones, not from a prototype.
- Cover glass, 0.5 mm. Thin, chemically strengthened glass, flat with no curved edges.
- AMOLED panel with touch, 0.4 mm. Flexible OLED panels are already this thin.
- Titanium mid-frame, 0.6 mm. This is what keeps a thin phone from bending in a back pocket.
- Board and battery, 3.2 mm. The board sits next to the cell, not above it. This is the layer that decides everything.
- Back plate, 0.7 mm. Matte glass or ceramic, with the camera sitting flush.
The camera is the hardest part. Good camera modules are thick, which is why almost every phone has a bump. We would use a single 50 megapixel sensor with a slim lens and accept that it is a good everyday camera, not a great one. No bump, no second and third lens. If photography is your hobby, you probably already own a camera that beats any phone.
The battery question
A body of roughly 62 by 124 mm with a 3.2 mm battery layer leaves room for something around 2,000 mAh. That sounds small, and next to a flagship it is. But most of a modern phone's battery goes to the screen being on for hours, apps running in the background and radios waking up for push notifications from dozens of services.
Take most of that away and the budget looks different. A black interface, no background apps and an allow-list for notifications (more on that below) leave the cellular radio and the occasional call as the main costs. Our rough estimate is two to three days of normal use. That is a guess on paper and real radios are unpredictable, but it is the kind of number that makes a small cell workable.
Notifications by invitation
The phone has one physical control besides power: a slider on the side, marked in orange. Slide it and the phone goes quiet until a time you choose. Nothing buzzes except calls and texts from an allow-list of people you picked, usually five or six.
Outside quiet mode, the rules are still strict. There are only a handful of tools, and none of them is allowed to notify you about itself. Messages tells you someone wrote. Directions tells you to turn left. Nothing tells you what you might have missed.
Spec sheet, on paper
| Size | 62 × 124 × 5.4 mm |
|---|---|
| Screen | 4.3 inch AMOLED, 1080 × 2160, true-black interface |
| Frame | Titanium mid-frame, glass front, matte glass or ceramic back |
| Camera | One 50 MP sensor, flush, no bump |
| Battery | About 2,000 mAh, two to three days (estimate) |
| Connections | 4G and 5G, eSIM, Wi-Fi, Bluetooth, USB-C |
| Controls | Power button and a quiet slider |
| Software | Eight built-in tools, no app store, no browser |
What we are unsure about
A concept is only useful if you are honest about the weak spots, so here are ours.
Group chats. Many families and friends live in WhatsApp or iMessage, not SMS. A phone without those apps can quietly cut you out of plans. There are ways around it, such as forwarding services and RCS, but none of them are perfect, and this is the reason most people give up on minimal phones.
Durability. 5.4 mm of titanium and glass is stiff, but a thin phone is always more fragile than a thick one. We would rather ship it with a simple bumper than pretend otherwise.
Price. Thin hardware costs more to make, not less. A phone that does less but costs as much as a flagship is a hard thing to explain.
Maps. Directions without a browser means no reviews, no opening hours and no photos of the restaurant. For some people that is the point. For others it is a dealbreaker on a Friday night.
Why we drew it anyway
Our software follows the same rule: do one job well, then get out of the way. Drawing a phone made that rule concrete. Every item on the home screen had to justify the battery, the pixels and the moment of attention it costs. Most of the features we cut were easy to cut, which says something about how many we carry around every day without choosing them.
In April we will return to this concept with the hardware sheet: e-ink versus AMOLED in detail, how you type on a screen this small, and which materials would make it last. If you would buy something like this, or you think we have got it wrong, we would like to hear from you on the contact page.