Trying To Get Linux Running On A Nokia E6

The Nokia E6 is a smartphone from back in the old days when Symbian was a thing. [fluffleswaffled] has been doing the work to get the ancient handset running Linux instead, because that’s ultimately cooler than what the phone shipped with out of the box.

There isn’t an unlocked bootloader on the E6, so instead, [fluffleswaffled] used an altogether different route to boot Linux. A Symbian app is used to load the kernel and device tree into RAM, at which point the MMU and caches are turned off and the device jumps into Linux. It’s a one-way trip, from which there is no way back to Symbian without a power cycle. The setup nets a terminal on the phone’s own screen, and the hardware keyboard and touchscreen are functional. The display is controlled by a Broadcom VideoCore III, with [fluffleswaffled] capturing messages from Nokia’s original display driver to create a custom kernel driver that replays them.

There’s an issue, though. The phone doesn’t stay in Linux land for long — it always resets within a couple minutes of booting into the alternative OS. [fluffleswaffled] believes this is because the phone’s baseband chip is supervising the application processor, and killing things once it’s detected that the Symbian mobile stack has stopped running. They’re hoping that someone with experience with Nokia basebands or the relevant hardware can point them in the right direction to get this hack running for more than 3.5 minutes at a time.

There probably isn’t a great deal of utility in getting Linux running on a 2011 smartphone, but we love the hustle nonetheless. We’ve seen this done before, though, and it’s always interesting to learn what it takes to get the OS booting on a new platform. If you’re whipping up similar hacks in your home lab, don’t hesitate to let us know on the tipsline.

Turning A Run-Over Samsung Galaxy S23 Into A Gaming PC

Repurposing old smartphones for more general purpose computing isn’t a new thing, but the project by [LastComputer] ups the ante by going from a Samsung Galaxy S23 that looks like it got run over by at least a few cars to a very serviceable gaming computer, courtesy of its Snapdragon 8 Gen 2 SoC.

The somehow still working but definitely worse for wear phone was purchased for 1,700 Ukrainian Hryvnia (~$40). It being SIM locked also helped reduce the price, even if someone had somehow wanted to use it again as a phone. Since the SoC inside is also used in quite capable gaming handhelds, but with good cooling, that would be a real waste.

Converting it into proper gaming system requires some careful disassembly, some gentle whacking with a hammer to straighten out the frame and a new battery as the mainboard won’t work without one installed.

A 3D-printed phone case glued to an SSD cage for the 512 GB SSD serves as the enclosure, along with two USB hubs, one of which also provides HDMI output. For the active cooling system a heatsink was hot-glued to the vapor chamber with a properly sized fan mounted to it. Here we could definitely see some zip ties being added to prevent it from falling off.

Compared to running the phone in its stock cooling configuration this shaves off about seven degrees C, with thermal throttling noticeably reduced. This consequently provides a much better desktop experience in Samsung’s DeX (Desktop eXperience) desktop mode, which is what’s used for running applications and games.

Running God of War as an emulated PS2 game works pretty well, as does running games with the Dolphin emulator and the GameHub app using which PC games on Steam, GoG and others can be run. Although you can also install other OSes on the phone hardware, Samsung DeX doesn’t appear to be a bad option if you happen to repurpose a high-end Samsung phone that supports this mode.

Continue reading “Turning A Run-Over Samsung Galaxy S23 Into A Gaming PC” →

A Keyboard With No Keys

For as capable as smartphone hardware is, the software running on them can be especially restrictive and cumbersome. Unlike a single-board computer with GPIO running a standard Linux operating system and some intuitive programming language like Python, smartphones are generally walled gardens where programming major overhead, and if a custom program can be run on them at all the user still has to figure out how to interface hardware with a USB-C port. To skip past all of this, [nicolas.ma] built an audio modem that can send keyboard input to a computer with nothing more than a browser.

The “keyboard” starts off in a browser running on a standard smartphone. A user can input text into the browser, which then gets converted into a series of audible audio pulses that can be sent to the keyboard. The keyboard itself listens to those pulses, decodes them, and then sends the text through to the computer as a standard USB device thanks to an Arduino Micro at the center. Arduino Micros are excellent choices for keyboard controllers because they have a built-in USB chip.

The protocol used here is designed and built by [nicolas.ma] as well. The words allow for variable length, with the device determining message length, and a word-ending scheme that automatically sends the message to memory when it’s detected that the message is finished. There’s also integrity checking and the ability to check on the link’s state. From hardware to software it’s an impressive build, and for anyone wondering what this might be used for [nicolas.ma] has already built a password manager from it.  Continue reading “A Keyboard With No Keys” →

Cell Broadcast: The Modern Emergency Alert System

Once upon a time, telephones were primarily point-to-point communications systems. There were options for three-way and conference calls out there, but by and large the plain old telephone system was about connecting one handset to another for a direct conversation. For this reason, the telephone was seldom used for mass emergency communications, because it was simply not fit for broadcasting a message to a wide number of people.

However, technology has since changed. Our modern phones are all connected to a big digital over-the-air network, and large swathes of them can be addressed all at once if so needed. This has led to the development of emergency warning systems that use the cellular network, with Cell Broadcast being the most notable iteration.

Continue reading “Cell Broadcast: The Modern Emergency Alert System” →

Phone Stand Aims To Fight Addiction

Sometimes, it’s hard to stop picking up your phone every few minutes to check on notifications and scroll endlessly through the slop of the day. [PushpendraC2] has been working on a solution to this problem that would ideally discourage such behavior —  a nifty little smartphone stand!

The concept is straightforward enough—the smartphone stand uses a simple tactile button to determine if your smartphone is sitting on the little 3D printed shelf, or not. However, the smarts inside do a bit more than that, too. An ESP32-S3 is charged with monitoring whether the smartphone is sitting in place, and starts counting “focus time” while it’s there. If the phone is picked up, the OLED display on the shelf starts ticking down a 5-second timer to encourage you to put it back. If you don’t, the focus time is reset and you lose your streak.

It’s also possible to tap a touch sensor on the device which sets a reminder timer, prompting you to put your phone back after a set period of time, between 2 to 30 minutes. A buzzer will then start going off to prompt you to put the phone down. If you want to track the devices impact, you merely need to log in to the web server hosted by the ESP32, which shows your current focus session time, along with a heatmap of your daily productivity.

It’s a simple idea, but one that uses a few neat psychological hooks to encourage compliance and behavioral change. We’ve featured similar projects in this vein before, No surprise, as phone addiction is a problem experienced by many.

Continue reading “Phone Stand Aims To Fight Addiction” →

A promo image that might have been a little much even in 1999.

Commodore Unveils Linux Powered Flip Phone

Whatever happens with the new incarnation of the Commodore corporation, we’ll always remember the old one fondly. Well, we’ll remember certain of its products fondly, at any rate, if not the corporate leadership that drove them under. About that, perhaps the less said the better. That’s why we’re looking at the revived Commodore’s latest offering with equal parts interest and trepidation — is there really a market for a Linux-based, Commodore branded flip phone in 2026 and beyond?

The official reveal trailer, which you can watch below, can only be described as weaponized nostalgia for the late 90s, which tracks because the revived C-64 is more-or-less the same thing for the 8-bit era. That said, between replaceable batteries, actually having a decent camera  — a 48MP Sony module — quality Cirrus Logic DAC for audio, and running the Linux-based, Android-app-compatible Sailfish OS, the “Callback 8020” ticks all the boxes. Except for price, that is. Many will find the $499 USD launch price a little tough to swallow in this economy, so we hope they aren’t betting the farm on this one being a mass hit.

Still, compared to other premium “digital minimalist” products like the LightPhone III, the price looks reasonable — and with web browsing and social media explicitly excluded from the app store, this phone is firmly in that category. At least this one comes with some sweet Commodore branded headphones, which double as an FM antenna just like they did on your Nokia back when.

While it doesn’t come with DOOM from the factory, it does come with Snake and a selection of emulated C64 games . Ringtones are SID samples, but of course there’s no actual SID chip in the phone, any more than there’s a 6502. That said, if someone builds a phone around a 6502, please let us know.

No, it’s not a new Amiga, as so many of us were hoping for, but by putting quality modern components into the flip phone form-factor, at least they’re trying to innovate (or perhaps retrovate) and we have to respect that. Only time will tell if the market does.

Continue reading “Commodore Unveils Linux Powered Flip Phone” →

Off-Grid OCR Server Powered By IPhone

Running an optical character recognition (OCR) server might sound like it would need some powerful hardware, like a rack-mounted, water-cooled machine, or at least a nice desktop or laptop. But if you have the time, anything could be used. [Hemant] has a long-running personal project that processes a lot of image data over a long time, and set up the OCR server on an iPhone 8 running entirely with solar power, rather than turn to more typical hardware.

Part of what makes this task feasible for low-powered hardware is Apple’s Vision framework, which uses machine learning to aid in things like character recognition (among other tasks). It will run on an iPhone just as easily as a Mac. The phone’s built-in battery already provides the first step of an off-grid setup. This build relies on a separate power bank to integrate the phone with the solar panel more easily. On the software side, [Hemant] reports that the true challenge wasn’t setting up the server as much as it was keeping the iPhone from sleeping or stopping his program from running full-time.

A system like this running off-grid, especially considering the costs of the solar panel and power bank, might seem counterproductive. But when comparing electricity costs for running the same software on his server, he estimates he saves about $10 per month with this setup, which has a payback of somewhere around 2-3 years. Not too bad for a phone that would have otherwise ended up in a landfill. Old phones can be surprisingly good choices for servers, too. It helps if they can run Linux, but plenty of phones will support server applications, even when running their native OS.