Firefox OS on the ZTE Open

There was a period where it appeared that the smartphone industry would be dominated by closed products and non-free software. Android has done a lot to change that situation; it is now possible to own a hackable device that runs mostly free software. But it would be nice to have some viable alternatives, preferably even more free and more Linux-like. Among the many would-be contenders for the title of leading alternative, Firefox OS offers a special appeal. It is, after all, a Linux-based system built by an organization that has a history of looking out for the interests of its users. So when the opportunity came along to try out Firefox OS on real hardware, your editor did not hesitate for long.

The ZTE Open

The device in question is the ZTE Open, a Firefox OS handset that can be had for a mere $80. That is a low price for a smartphone, but it is consistent with Mozilla's apparent strategy of targeting the cheaper end of the market. Cheap is nice, but, as one might expect, some severe compromises had to be made to arrive at that price. The phone uses an oldish Qualcomm MSM7225A processor with only 256MB of memory. The camera offers a two-megapixel sensor, which is low by contemporary standards. Internal storage is minimal, but the phone comes with a 4GB MicroSD card.

Visually, the device is smaller than many current devices. It is also bright orange; it looks a lot like a Nexus One that has been outfitted for hunting season. The 480x320 HVGA screen is decidedly low-resolution by current standards. As one might expect, the device is often slow to respond, especially when switching between applications. Perhaps most annoying, though, is that the touchscreen itself is often unresponsive. Using the Firefox OS on-screen keyboard can be a slow and painful experience.

The Firefox OS interface has not changed a great deal since this review was written at the end of last year. The annoying three-step process (hit the power button, swipe upward, tap the "unlock" icon) to unlock the screen is still necessary. Swiping toward the left on the home screen yields a list of installed applications, while swiping to the right yields a list of installable application categories. Strangely, many of the categories are not initially visible on that screen. Instead, one must hit the "more" button to see the full list of categories; only thereafter is it possible to see which applications can be found therein. There is a reasonably long list of available applications, but relatively few that would be familiar to iOS or Android users.

Application installation is a matter of holding a finger down on the relevant icon. Since applications are all web-based, though, there is no real need to install them unless one wants to run one offline or have the icon in a handy place. There is a permissions model for applications, but that is all hidden from the user; for the most part, users are supposed to rely on the maintainers of the application "marketplace" to ensure that malicious applications are not made available. The one exception is for location data; the system will ask the user before allowing an application to access the user's current location.

There is a basic email client that, unfortunately, could not be tested, since it refuses to deal with mail servers that have self-signed certificates. The web browser is Firefox, of course; it works as expected. There is a basic mapping tool (using "HERE") that can generate driving directions; there is no turn-by-turn navigation available, though. As an added "benefit," the maps include location-based advertisements. Weather information is available through an Accuweather app; there is also a basic calendaring tool. The contact manager can import data from Facebook, but not from other sources (Google, for example).

At the interface level, one of the most striking decisions is the complete absence of a "back" button. The result is that one often seems to end up in some application-specific dead end, with no recourse other than to hit the "home" button and drop out entirely. Getting rid of "back" may make application development easier, but the result seems to be less friendly for the user.

The home button will, if held down, produce a scrollable screen showing the currently running applications. The user can then switch to one of those applications; there is an option to close running applications as well. This screen is supposed to show a thumbnail with the current screen contents of each app, but those thumbnails are often blank for some reason.

All told, the ZTE Open is reminiscent in many ways of the first Android phones. It is slow, somewhat buggy, and the functionality is not up to what the market leaders provide. Whether Firefox OS will yet turn out to be a disruptive technology like Android was remains to be seen.

Under the hood

One does not need to look too hard at Firefox OS to realize that its developers have taken advantage of a lot of free infrastructure from Android. The kernel on the ZTE Open is an Android-derived, bleeding-edge 3.0.8 model, with wakelocks and all. Services like binder are running. The Android USB debugging protocol is supported, so tools like adb and fastboot can be used in the usual manner (though there is an update that should be applied for fastboot use). Much of the graphics subsystem is built on the Android "gralloc" API as well. All told, Firefox OS has benefited strongly from the availability of the Android code as a base to build on.

There appears to be no available terminal emulator application for Firefox OS. But one can, naturally, get a shell on the device by plugging it into a USB port and running adb shell. The shell environment is based on BusyBox and is rudimentary — but not worse than what one encounters on an Android device. It is also an unprivileged shell; there does not appear to be any way to gain root access short of exploiting a vulnerability — or installing a new version of the operating system.

In the limited time available your editor was unable to succeed in the latter task — replacing the operating system. There is extensive documentation on how this should be done on the Mozilla web site, and it is a simple matter of patience to download the 12GB "source" tree ("source" being in quotes because it includes things like a binary cross compiler, video files, and more). The actual build process requires that the phone be connected so that a number of binary files can be copied off of it; these (proprietary) files are needed to build a replacement image. Thereafter the build fails (in an equal manner on Ubuntu, Debian, and Fedora boxes) after a long list of warnings. Somewhat discouraging.

Perhaps this particular problem is a temporary setback resulting from the state of the source tree when this build was attempted. But it's clear that, like building Android, making a new Firefox OS image is not a task for the faint of heart. Should this system take off, future users are far more likely to exercise their freedoms once a CyanogenMod-like project comes along to take care of a lot of the details.

Conclusion

But will Firefox OS take off? It is hard to see the system, as demonstrated by the ZTE Open, displacing Android anytime soon. It is too slow, too rough-edged, and lacking too many third-party applications. Most people with access to a recent Android-based handset are likely to stick with that rather than shift over to Firefox OS.

But the world is full of people without access to such a handset. Mozilla seems to be making a play for the attention of many of those people by going after the low end of the market. After all, $80 will not buy a particularly satisfying Android device either; it is hard to imagine Android running on hardware like the ZTE Open in any kind of pleasing way. Perhaps Firefox OS will find a place running on low-end devices; by the time the system matures (and it does appear to be developing quickly), there might just be an established user base for it.

Working with this device reminded your editor of a scene from Charlie Stross's classic Accelerando:

Amber clutches the phone like a lifesaver: It's a cheap disposable cereal-packet item, and the cardboard is already softening in her sweaty grip.

If we can envision an era where cardboard telephones can be obtained from a box of cereal, it is not much of a stretch to think about those phones running a relatively undemanding system like Firefox OS.

Meanwhile, though, Firefox OS hopes for a place on the plastic devices that we use now. Anybody wanting to experiment with the system can build it for a number of current devices, including most recent "Nexus" phones. If enough developers do that and start taking the system in interesting directions, if more applications appear, and if people actually buy Firefox OS devices, it may well develop to a point where it is a realistic competitor to the more established mobile operating systems. Another free Linux-based mobile system would be a good thing, so one can only wish Mozilla luck as it pursues that goal.

Source: lwn