Xteink X4 Mini E-Reader Clips to Your Phone, Lasts 2 Weeks
A compact e-reader that clips to the back of a smartphone, letting you switch from social apps to reading with magnetic hold and simple controls.
Meet the Xteink X4, a compact e-reader that clings to the back of a smartphone using magnets. Its goal is simple: help you switch from scrolling social apps to quiet reading with a quick flip of the device.
What is the Xteink X4?
The X4 attaches to the back of a phone via magnets and supports magnetic wireless standards MagSafe and Qi2. For devices without a magnetic module, the package includes extra adhesive rings to provide a secure fit.
Display and reading comfort
The reader uses a 4.3-inch E-Ink screen with a pixel density of 220 pixels per inch. It does not have a built‑in backlight, so reading in the dark requires an external light source. A 650 mAh battery can power reading sessions for roughly two weeks when you read for about one to three hours daily.
Formats, storage and controls
The X4 supports only DRM-free files in EPUB and TXT formats. Content is loaded via a microSD card up to 512 GB or over a wireless Wi‑Fi connection. Because the screen is non‑touch, all operations rely on four physical buttons. You can install custom fonts if you want to replace the two preinstalled ones.
Size, weight and price
Compact and light, the X4 weighs 74 grams and measures 114 x 69 x 59 millimeters. It is priced at $69, positioning it as a more affordable option compared with larger e-readers from major brands like Kindle or Kobo.
Expert opinion
Tech analyst Jordan Lee notes that the X4 prioritizes a minimal, distraction-free reading experience in a tiny package. While its display is basic and lacks a built‑in light, the magnetic attachment and long battery life suit users who want a simple, portable reading companion.
Summary
The Xteink X4 is a small, affordable e-reader that clings to your phone to offer a ready-to-read mode on the go. It uses a compact E‑Ink display, relies on separate lighting, and offers basic navigation with physical buttons. For readers who want a dedicated device without extra features, this gadget provides a focused alternative at a compelling price.
Key insight: A phone-backed e-reader delivers instant access to reading without extra devices, but trade‑offs include no backlight and basic controls.