Three pocket-sized e-readers made the news within three weeks. Two of them got a stage at IFA 2026, held in Berlin from September 4 to 8. BOOX showed the Picco, PocketBook brought the Q, and XTEINK moved its X4 Pro onto Amazon. Together they show that phone-shaped electronic paper is becoming a real product class. Whether one will suit you depends on its software more than its screen.
Three pocket readers in three weeks
The BOOX Picco is the smallest of the three. BOOX calls it the first product in a new category named Tile, and hands-on coverage from IFA 2026 appeared on September 5, 2026. The Picco has a 3.97-inch monochrome electronic paper touchscreen and a front light with brightness and warmth control. It also has physical page-turn buttons, a microSD slot and USB-C. At the time, BOOX was aiming for a November 2026 release and had announced no price. Pre-orders opened on September 28, and the BOOX store lists the US version at $109.99, shipping around October.
PocketBook took the opposite approach with the Q, shown at the same event after news coverage in late August 2026. Its 5.84-inch E Ink Carta 1300 panel has 788 by 1576 pixels at 300 pixels per inch, which matches full-size readers. The body measures 154 by 75.8 by 6.5 millimeters and weighs 130 grams. PocketBook lists 1 GB of memory and 32 GB of storage, with no card slot. The Q also has an IPX4 rating, dual-band Wi-Fi, Bluetooth 5.0 for headphones and USB-C with OTG. It’s due in late fall 2026.
XTEINK, the outlier of the three, launched its X4 Pro through its own site in late July 2026. An Amazon listing appeared on September 4, 2026, though it wasn’t taking orders yet. Coverage of the brand has repeatedly flagged buyer complaints about shipping delays and difficult returns. That makes it sensible to wait for a retailer with a straightforward returns process.
Size is the easy part
Electronic paper panels below five inches have existed for years in shelf labels and small signage, and 300 pixels per inch is now ordinary.
The hard part is what a reader can do once you keep the phone’s shape and remove the phone. These readers leave out notifications, feeds and scrolling apps on purpose, and that is the whole appeal. Reading on paper-like glass with no messaging app three taps away is a different experience from reading on a phone.
Physical page-turn buttons are back at this size because a four-inch screen leaves little room for a thumb that also has to tap. A rocker on the edge keeps your hand still.
The software each reader runs
The Q runs Linux-based reading software. BOOX describes the Picco’s software only as “a minimalist operating system.” ReadMe.Club, which analyzed the firmware, found CrossPoint running on an ESP32-S3 chip and says it is not Linux. Neither runs Android, and that sets a hard limit on your library.
Without Android there’s no Google Play. The Kindle, Libby and Kobo apps are Android applications, so they can’t be installed on a system that doesn’t run Android. Everything these readers open goes through their own built-in software.
The BOOX Note Air5 C, one of BOOX’s larger models, ships as a full Android tablet with the Play Store. It will run a rival reading client, a bank app or a note service that has nothing to do with BOOX, and that flexibility is the reason to buy it. The Picco gives that up on purpose in exchange for simpler, lighter and cheaper hardware.
Formats, DRM and library loans
PocketBook lists 25 formats that the Q reads natively, including EPUB, PDF, MOBI, AZW and CBR. The Q also handles Adobe DRM and LCP, the protection schemes most European library platforms use. A PocketBook version of the Libby app comes pre-installed, so borrowed titles have a documented route onto the reader.
BOOX answered most of the same questions for the Picco in mid-September. Its store listing names EPUB, MOBI, AZW3, FB2, TXT and other document formats, but not PDF. The listing adds a 480 by 800 screen and a 920 mAh battery. It gives no processor, memory or battery-life figure and lists no audio formats. Reports from IFA disagreed about Bluetooth too, with one listing wireless audio and later coverage calling it unclear. BOOX’s specification sheet now lists “Wi-Fi + BT”.
Those gaps are worth waiting out. A pocket reader that can’t open the books you already own is little more than an ornament, and buying one before the format list is published is a gamble.
What you give up at this size
The obvious cost is reading area. A four-inch page holds roughly a third of the words that a standard six-inch reader shows at the same type size, so you turn pages far more often. That can feel pleasant or maddening, and the only way to know is to try one.
PDFs suffer most, because a fixed A4 page reflowed onto a four-inch screen is close to unreadable and zooming turns a book into a map. If you mostly read academic papers or manuals, stay at seven inches or larger.
The PocketBook Q has no memory card slot, so its internal storage is all you get. The Picco does take a microSD card. That makes little difference for text and a big one for comics and illustrated books.
Who these readers suit
Buy a pocket reader as your second e-reader. It fits in a coat pocket, survives a commute and gets read on days when a larger reader stays home.
Commuters who read standing up gain the most, along with travelers who count grams and anyone trying to break the habit of picking up a phone during idle minutes.
If you want a single e-reader that does everything, none of these is the right answer. A six- or seven-inch model still reads better and handles PDFs better, and it costs less than buying twice.
Details still to confirm
BOOX has now published the Picco’s format list and price. A battery-life figure is still missing, and that number will show whether the Picco is a bargain or a limitation.
The Q’s specification is already public and detailed. The open questions are its real-world battery life and how well PocketBook’s reading software performs at this size. Independent testing should answer both before the late fall release.
For the X4 Pro, confirm that it’s available through a mainstream retailer, because a return policy you can rely on is worth more than any spec on the page.
