Skip to main content

Mozilla means business with the mid-range KDDI Fx0 Firefox phone

japan kddi fx0 firefox phone news os
Image used with permission by copyright holder
It isn’t every day you see a Firefox phone, and it’s even rarer to find one with decent specifications. Mozilla’s Firefox OS runs Web apps on mobile devices and sets the Firefox Web browser as default. A handful of Firefox OS devices are available in European, Asian, and South American countries, but so far not one of them has powerful specifications. Until now, that is. Japan’s KDDI Fx0 is a solid, mid-range Firefox smartphone.

Wireless carrier KDDI announced the Fx0 in conjunction with Mozilla just a few days before its Christmas Day launch date. The Fx0 is the first Firefox phone to support 4G LTE, sport a relatively fast Qualcomm processor, and feature an HD screen. While it’s certainly not the high-end monster phone Mozilla would have you believe, the Fx0 is the most powerful Firefox phone to date.

The Fx0 comes with a 4.7-inch IPS HD screen, and is powered by a 1.2 GHz Qualcomm Snapdragon 400 quad-core processor along with 1.5GB of RAM. Users will have 16GB of storage to fill up before popping in a MicroSDXC card into the phone for more space. An 8-megapixel back camera and a 2.1-megapixel front-facing camera round out the mid-range specs. The entire device gets its juice from a 2,370mAh battery.

firefox-os-phone
Image used with permission by copyright holder

Although a Firefox phone with mid-range specs is enough of a talking point already, the Fx0’s design is sure to turn some heads. The phone’s casing is completely transparent, giving you an unobstructed view of all the muted gold-brushed components. The circuitry, battery pack, and just about everything else is clearly visible. The result is a chic, mechanical device that looks like a fancy Swiss watch that lets you see its movement in action.

No price was mentioned, but if Mozilla sticks to its guns, the Fx0 should be a relatively affordable device when it arrives in the carrier’s online shop on December 25. Other shops and retailers will receive the phone on January 6, 2015.

Malarie Gokey
Former Digital Trends Contributor
As DT's Mobile Editor, Malarie runs the Mobile and Wearables sections, which cover smartphones, tablets, smartwatches, and…
Amazon Prime Big Deal Days Garmin Watch Deals 2024
Three Forerunner 165 watches stacked on a forest floor.

Update 10/04/24: We've updated the deals to reflect the newest pricing and discounts, as well as replace any expired deals with new ones. We've also adjusted some of our advice on how to pick deals for better clarity and easier reading.

Even though Prime Day is still a few days away, we're happy to see that there are already a lot of early Prime Day deals on Garmin watches, pretty much across the board. So, if you're into fitness, camping, hiking, or even extreme sports, now is a great opportunity to get your hands on one of the best brands in the fitness space. To give you an extra hand in finding the best smartwatch deals on Garmin, we've gone out and scoured all the big retailers for the best Garmin deals we can find and listed them below. That said, if you haven't quite found what you're looking for below, be sure to also check out these Prime Day smartwatch deals.
Garmin Vivoactive 5 -- $250 $300 16% off

Read more
Apple iPhone 16 vs. Google Pixel 9: a clear winner
Apple iPhone 16 vs. Google Pixel 9.

Google and Apple unveiled their latest smartphone lineups in the past few weeks. If you're interested in an entry-level phone option, you might want to consider the Google Pixel 9 and the Apple iPhone 16, which both include the latest and most powerful processors, fantastic cameras, and cutting-edge AI features. Both also include versions with various storage levels at different price points, and while they're among the cheapest in their respective ranges, you're unlikely to buy both. So which should you buy? Let's compare these phones and see how they stack up.
Apple iPhone 16 vs. Google Pixel 9: specs

Apple iPhone 16
Google Pixel 9

Read more
The iPhone SE 4 sounds amazing. But there’s still one big unknown
Mockup of fourth-generation iPhone SE camera bump.

The iPhone 16 series has won praise for its one-package-fits-all approach. It’s got a neat design, fast processor, AI future-proofing, and improved camera chops — all without asking a Pro-tier premium. But it seems the 2025 iPhone SE 4 is going to overshadow it.

Citing an anonymous “reliable” source, 9to5Mac claims that the next iPhone SE will be the first to feature Apple’s own 5G modem. It also makes sense, as the affordable model is a far safer choice for testing first-gen hardware than the cash-cow mainline iPhones.

Read more