The minuscule device is made by Kyocera and is coming to Japanese mobile phone operator NTT DoCoMo next month. It weighs just 47 grams and measures 91mm x 55mm x 5.3mm.
The Kyocera KY-O1L features a 2.8-inch monochrome e-ink screen, similar to the kind used in e-book readers. It’s also got a 380mAh battery, LTE connectivity, and what’s presumably a pretty basic web browser, but it doesn't use apps or have a camera.
We’ve seen other feature phones like this appear in 2018, including Nokia’s updated 8110 banana phone, but unlike that cheap handset, the KY-O1L is a pricey $300. It’s still slightly less than the upcoming new Palm phone, but at least that mini device is a lot closer to a standard, albeit it low-spec, modern handset.
There are also questions over whether the KY-O1L really is the world’s thinnest phone. The Vivo X5 Max’s thickness is 4.75mm, and both the 2016 Mozo Z and Oppo R5s are under 5.3mm.
The Kyocera KY-O1L is being released exclusively in Japan next month. For those with money to burn, having a spare phone tucked inside their credit card holder might be a novelty worth having. But for a tiny Android handset packed with high-end features, check out the Unihertz Atom.
https://www.techspot.com/news/76987-check-out-ky-o1l-credit-card-sized-world.html