Phonenstien Flips Broken Samsung Into QWERTY Slider

September 2, 2025 by Tyler August 17 Comments

The phone ecosystem these days is horribly boring compared to the innovation of a couple decades back. Your options include flat rectangles, and flat rectangles that fold in half and then break. [Marcin Plaza] wanted to think outside the slab, without reinventing the wheel. In an inspired bout of hacking, he flipped a broken Samsung zFlip 5 into a “new” phone.

There’s really nothing new in it; the guts all come from the donor phone. That screen? It’s the front screen that was on the top half of the zFlip, as you might have guessed from the cameras. Normally that screen is only used for notifications, but with the Samsung’s fancy folding OLED dead as Disco that needed to change. Luckily for [Marcin] Samsung has an app called Good Lock that already takes care of that. A little digging about in the menus is all it takes to get a launcher and apps on the small screen.

Because this is a modern phone, the whole thing is glued together, but that’s not important since [Marcin] is only keeping the screen and internals from the Samsung. The new case with its chunky four-bar linkage is a custom design fabbed out in CNC’d aluminum. (After a number of 3D Printed prototypes, of course. Rapid prototyping FTW!)

The bottom half of the slider contains a Blackberry Q10 keyboard, along with a battery and Magsafe connector. The Q10 keyboard is connected to a custom flex PCB with an Arduino Micro Pro that is moonlighting as a Human Input Device. Sure, that means the phone’s USB port is used by the keyboard, but this unit has wireless charging,so that’s not a great sacrifice. We particularly like the use of magnets to create a satisfying “snap” when the slider opens and closes.

Unfortunately, as much as we might love this concept, [Marcin] doesn’t feel the design is solid enough to share the files. While that’s disappointing, we can certainly relate to his desire to change it up in an era of endless flat rectangles. This project is a lot more work than just turning a broken phone into a server, but it also seems like a lot more fun.

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Smartphone Hackability, Or, A Pocket Computer That Isn’t

August 11, 2025 by Arya Voronova 88 Comments

Smartphones boggle my mind a whole lot – they’re pocket computers, with heaps of power to spare, and yet they feel like the furthest from it. As far as personal computers go, smartphones are surprisingly user-hostile.

In the last year’s time, even my YouTube recommendations are full of people, mostly millennials, talking about technology these days being uninspiring. In many of those videos, people will talk about phones and the ecosystems that they create, and even if they mostly talk about the symptoms rather than root causes, the overall mood is pretty clear – tech got bland, even the kinds of pocket tech you’d consider marvellous in abstract. It goes deeper than cell phones all looking alike, though. They all behave alike, to our detriment.

A thought-provoking exercise is to try to compare smartphone development timelines to those of home PCs, and see just in which ways the timelines diverged, which forces acted upon which aspect of the tech at what points, and how that impacted the alienation people feel when interacting with either of these devices long-term. You’ll see some major trends – lack of standardization through proprietary technology calling the shots, stifling of innovation both knowingly and unknowingly, and finance-first development as opposed to long-term investments.

Let’s start with a fun aspect, and that is hackability. It’s not perceived to be a significant driver of change, but I do believe it to be severely decreasing chances of regular people tinkering with their phones to any amount of success. In other words, if you can’t hack it in small ways, you can’t really make it yours.

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The Death Of Industrial Design And The Era Of Dull Electronics

July 23, 2025 by Maya Posch 194 Comments

It’s often said that what’s inside matters more than one’s looks, but it’s hard to argue that a product’s looks and its physical user experience are what makes it instantly recognizable. When you think of something like a Walkman, an iPod music player, a desktop computer, a car or a TV, the first thing that comes to mind is the way that it looks along with its user interface. This is the domain of industrial design, where circuit boards, mechanisms, displays and buttons are put into a shell that ultimately defines what users see and experience.

Thus industrial design is perhaps the most important aspect of product development as far as the user is concerned, right along with the feature list. It’s also no secret that marketing departments love to lean into the styling and ergonomics of a product. In light of this it is very disconcerting that the past years industrial design for consumer electronics in particular seems to have wilted and is now practically on the verge of death.

Devices like cellphones and TVs are now mostly flat plastic-and-glass rectangles with no distinguishing features. Laptops and PCs are identified either by being flat, small, having RGB lighting, or a combination of these. At the same time buttons and other physical user interface elements are vanishing along with prominent styling, leaving us in a world of basic geometric shapes and flat, evenly colored surfaces. Exactly how did we get to this point, and what does this mean for our own hardware projects?

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The Make-roscope

May 20, 2025 by Al Williams 10 Comments

Normal people binge-scroll social media. Hackaday writers tend to pore through online tech news and shopping sites incessantly. The problem with the shopping sites is that you wind up buying things, and then you have even more projects you don’t have time to do. That’s how I found the MAKE-roscope, an accessory aimed at kids that turns a cell phone into a microscope. While it was clearly trying to appeal to kids, I’ve had some kids’ microscopes that were actually useful, and for $20, I decided to see what it was about. If nothing else, the name made it appealing.

My goal was to see if it would be worth having for the kinds of things we do. Turns out, I should have read more closely. It isn’t really going to help you with your next PCB or to read that tiny print on an SMD part. But it is interesting, and — depending on your interests — you might enjoy having one. The material claims the scope can magnify from 125x to 400x.

What Is It?

The whole thing is in an unassuming Altoids-like tin. Inside the box are mostly accessories you may or may not need, like a lens cloth, a keychain, plastic pipettes, and the like. There are only three really interesting things: A strip of silicone with a glass ball in it, and a slide container with five glass slides, three of which have something already on them. There’s also a spare glass ball (the lens).

What I didn’t find in my box were cover slips, any way to prepare specimens, and — perhaps most importantly — clear instructions. There are some tiny instructions on the back of the tin and on the lens cloth paper. There is also a QR code, but to really get going, I had to watch a video (embedded below).

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Rayhunter Sniffs Out Stingrays For $30

May 5, 2025 by Lewin Day 40 Comments

These days, if you’re walking around with a cellphone, you’ve basically fitted an always-on tracking device to your person. That’s even more the case if there happens to be an eavesdropping device in your vicinity. To combat this, the Electronic Frontier Foundation has created Rayhunter as a warning device.

Rayhunter is built to detect IMSI catchers, also known as Stingrays in the popular lexicon. These are devices that attempt to capture your phone’s IMSI (international mobile subscriber identity) number by pretending to be real cell towers. Information on these devices is tightly controlled by manufacturers, which largely market them for use by law enforcement and intelligence agencies.

To run Rayhunter, all you need is an Orbic RC400L mobile hotspot, which you can currently source for less than $30 USD online. Though experience tells us that could change as the project becomes more popular with hackers. The project offers an install script that will compile the latest version of the software and flash it to the device from a computer running Linux or macOS — Windows users currently have to jump through a few extra hoops to get the same results.

Rayhunter works by analyzing the control traffic between the cell tower and the hotspot to look out for hints of IMSI-catcher activity. Common telltale signs are requests to switch a connection to less-secure 2G standards, or spurious queries for your device’s IMSI. If Rayhunter notes suspicious activity, it turns a line on the Orbic’s display red as a warning. The device’s web interface can then be accessed for more information.

While IMSI catchers really took off on less-secure 2G networks, there are developments that allow similar devices to work on newer cellular standards, too. Meanwhile, if you’ve got your own projects built around cellular security, don’t hesitate to notify the tipsline!

Turning Old Cellphones Into SBCs

April 8, 2025 by Elliot Williams 35 Comments

[David] sent us a tip about a company in Belgium, Citronics, that is looking to turn old cellphones into single-board computers for embedded Linux applications. We think it’s a great idea, and have long lamented how many pocket supercomputers simply get tossed in the recycling stream, when they could be put to use in hacker projects. So far, it looks like Citronics only has a prototyping breakout board for the Fairphone 2, but it’s a promising idea.

One of the things that’s stopping us from re-using old phones, of course, is the lack of easy access to the peripherals. On the average phone, you’ve got one USB port and that’s it. The Citronics dev kit provides all sorts of connectivity: 4x USB 2.0, 1x Ethernet 10/100M, and a Raspberry Pi Header (UART, SPI, I2C, GPIO). At the same time, for better or worse, they’ve done away with the screen and its touch interface, and the camera too, but they seem to be keeping all of the RF capabilities.

The whole thing runs Linux, which means that this won’t work with every phone out there, but projects like PostmarketOS and others will certainly broaden the range of usable devices. And stripping off the camera and screen has the secondary advantages of removing the parts that get most easily broken and have the least support from custom Linux distros.

We wish we had more details about the specifics of the break-out boards, but we like the idea. How long before we see an open-source implementation of something similar? There are so many cheap used and broken cellphones out there that it’s certainly a worthwhile project!

A design sketch of a partially disassembled candybar mobile phone. The enclosure is a clamshell of plastic that envelops the functional internals of the device and is illustrated to the right upper corner of the image, slightly overlapping the internals evoking the idea of the internals being inserted into the cover. The words "buttons part of the cover" are written toward the top with an arrow toward the numpad and "plastic shell with various design" is written toward the bottom with an arrow toward the translucent blue shell.

The Nokia Design Archive Is Open For Viewing

January 21, 2025 by Navarre Bartz 19 Comments

During the Cambrian Explosion of cellphone form factors at the turn of the millenium, Nokia reigned supreme. If you’d like to see what they were doing behind the scenes to design these wild phones, you’ll love the Nokia Design Archive from Aalto University.

Featuring images, presentations, videos and a number of other goodies (remember transparencies?), this collection gives us some in-depth insight into how consumer products were dreamed up, designed, and brought to market. Some projects require more reading between the lines than others as the Archive is somewhat fragmented, but we think it could still be an invaluable peek into product design, especially if you’re working on projects that you want to be usable outside of a hacker audience.

The Archive also includes approximately 2000 objects including many unreleased “unknown” models and prototypes of phones that actually did make it into the wild. While we’d love to get our hands on some of these devices IRL, having images with reference colors is probably the next best thing. Having replaced a number of smartphone screens, we hope more hackers take up the buttons and indestructible casing of these elegant devices for a more civilized age.

Thanks to [Michael Fitzmayer] for the tip! Be sure to checkout his work on Nokia N-Gage phones, including an SDK if you too love to taco talk.