Android 4.1 is the newest release of Android, and in keeping with the dessert-alphabet naming scheme, goes by the name of Jelly Bean. Henceforth you'll see JB or 4.1 interchangeably. Google sampled me another Galaxy Nexus, running the same build of Android 4.1 that was handed out to Google I/O attendees today. This isn't the final version that will be pushed out in July, but is close to final – or at least final enough to give to a few thousand attendees and press. 

I mentioned in the pipeline post about Android 4.1 that I heard UI performance was going to be a big emphasis in 4.1, that Google wanted to make the UI "smooth as butter" everywhere possible. Today seeing the announcement of Project Butter comes as no surprise, and represents further optimization to the hardware accelerated OpenGL ES render path that was introduced in Android 3.0 Honeycomb, and further improved in Android 4.0.x with more graphics primitives, making moving to it easier for developers.

In Android 4.1, the improvements that are under Project Butter are really four things:

  1. Improved 60 Hz Vsync timing from the Android drawing framework for individual applications. That means render path, touch, and display composition now take place on a 16 ms step. 
  2. Triple buffering for the UI, which I believe previously could be enabled, but only in individual OpenGL ES instances. The Android 4.0.x UI did not have triple buffering enabled as it now is. 
  3. Changes to the CPU governor which now send the SoC into its highest performance state as a function of touch interaction. I'm still eager to learn more about this in an upcoming session, but Android now better handles the latency associated with changing P-states on SoCs and getting into that maximum state when you're aggressively scrolling and panning.
  4. Enhancements to analysis in the form of Systrace for seeing the actual time spent in each part of the render process for a frame. This is being pushed out in the new Android SDK and there are obvious hooks into it under Developer Options inside 4.1. Google also gave us a glimpse of that earlier today. 

The result of these improvements is that the Galaxy Nexus feels like a different device to me with Android 4.1. It isn't huge, but the trouble spots that used to annoy the heck out of me with Galaxy Nexus and 4.0.4 are now largely smoothed over. That's not to say it's perfect, but it's clear Google has invested time (finally) into mitigating some of Android's lingering UI choppiness.

I wanted to show this on video, however my DSLR only captures at 24 FPS which would make it pretty difficult to see dropped frames. I brought my other Galaxy Nexus with 4.0.4 and put it alongside the 4.1 device, and there's a substantial difference in trouble areas. 

Additional GPU related drawing debugging under Developer Options

Some of those trouble spots included: scrolling the applications launcher into the widgets tab, the task switcher, screenshot compress and fade animation, application launch / close, and scrolling list boxes. In the case of the task switcher (which was not smooth in 4.0.4), the animation is now finally one that doesn't drop frames left and right. It is a huge difference. The others just feel better. I've also noticed that a number of other primary UI transitions have been somewhat simplified from a squeeze and fade to just a translation up or down across the screen. I think some might make the case that this is just optimization by removing transition flashiness, but on the whole the result is a much snappier interface. 

I still feel like the SGX 540 running at non-max clocks inside the Galaxy Nexus' OMAP4460 is overburdened, but with the right SoC Android 4.1 is going to scream. On the Nexus 7, the interface is very close to being fluid everywhere. I'm very impressed with performance on that device.


While we're talking about settings related improvements, the settings page gets some reorganization, including putting accounts right on the settings page, and under WiFi are new toggles for WiFi direct, and WPS pairing. Google has also changed up the toggles in 4.1, from the slanted, almost razor-blade like sliders to just plain switches. Another subtle thing is a change under About Phone -> Status: the network type indicator now shows "HSPA+" instead of "HSPAP" which previously confused users. 


There are some other new UI related 4.1 features. First up, notifications shade gets a dramatic improvement, including support for action to be taken right from the notification menu, such as dismissing a calendar alert, declining a call, or sharing photos. The top entry in the list also gets shown off in a larger box, and includes more detail. The bar also includes a rotation lock for tablets, and moves higher up on the display, obscuring the status bar indicators. The lock screen also gets an updated look, and a shortcut to Google Now. 


Widgets are also automatically resizeable and reposition themselves in 4.1, which is a subtle but important improvement over the rigidity of the AOSP home screen in 4.0. I feel like a lot of these subtle improvements are inherited from various skins and 3rd party customizations, which makes sense. Third party widgets will need an update to support official resizing. 


The keyboard also gets some improvements, including support for additional languages, and an expanded dictionary. One subtle change is that when you have the keyboard up, the back symbol changes to a down caret, which will no doubt make that UI step easier to grasp for new users.

Left: Another Google voice search query, Right: New intents picker

Google's answer to Siri is a two pronged approach - improved voice search with offline voice recognition, and semantic data results to those queries. In practice, the use paradigm is almost exactly like Siri, though the approach Google demonstrated is a bit less conversational. I have only had time to ask a few queries (such as the above search for a camera store for a new battery charger), but voice recognition does indeed work with no cellular connectivity, though you do lose the confidence level underline under words. Part of the better Google search idea is Google Now, which Google believes so strongly in, it dedicated an entire shortcut to it. 

Camera UI gets an overhaul and now reminds me of the Windows Phone 7 approach. You can swipe left to view the previous captured images, while the live preview remains live and slides off the screen. Photos can be deleted by then dragging up, like dismissing a card in webOS. This is also nice and smooth throughout. Android 4.1 also adds a new capture animation, but oddly enough I couldn't grab a screenshot of it. 

Android 4.0.4 vs 4.1 on Galaxy Nexus
Location WebKit Version Score Score Sunspider 0.9.1 Browsermark
Android 4.0.4 534.30 280 + 3 bonus 49% 1830.9 99493
Android 4.1 534.30 281 + 3 bonus 49% 1411.8 125103

While the Nexus 7 formally replaces Browser with Chrome (sans beta as of today), Android 4.1 proper on the Galaxy Nexus and other devices will retain Browser for some time. That web browsing experience gets improved in 4.1 with better support for HTML5 video, better rendering performance and memory usage, and further improvements to the V8 JavaScript engine. In browsermark and sunspider the difference in V8 is pretty dramatic, elsewhere there isn't a big change at all, as it's the same core version of webkit, just optimized more. 

There are more changes as well, including binary diff / delta update support for updating marketplace applications. Google has done the usual thing and outlined all of those other changes on their developers page for Jelly Bean. It's impossible to pass judgment on Android 4.1 after just 12 hours with both an updated Galaxy Nexus (with my primary SIM inside) and the Nexus 7, but thus far the improvements to UI smoothness have made a noticeable difference. Beyond that, probably the second most appreciable difference is in notifications, which now conveys much more information for things like new mail beyond the subject line and sender. The other thing to note is that again, this Android 4.1 isn't 100% final, but it is extremely close. I haven't seen any glitchiness yet, but obviously there will be changes before the final mid-July OTA update for Galaxy Nexus devices and others that were announced in the keynote. I'm looking forward to digging up the other subtle things that are new in Android 4.1 and updating if necessary. 

Google Nexus 7 by ASUS


View All Comments

  • beowulfpt - Thursday, June 28, 2012 - link

    I don't agree here. I have USB OTG on my Galaxy S2 and thought about using it a lor for storage but it is just not practical enough.

    With the tablet I would probably be interested in the possibility of watching some HD movies/shows while travelling. That often means 4GB+ files and its not possible to just plug in an external hard drive with NTFS.

    I was rather interested in this unit but when I realized it has no microSD slot, then it is a no-go for me. I like the price and specs, but I also want the ability to eventually add a bit more space to it in the future if I need it.
  • gatorproof - Thursday, June 28, 2012 - link

    Hey, just use EVER and rip and convert Bluesy movies to H.264 or Mpegs and that 25GB BD movie is now 1.5GB. meaning 3 movies in 4GB. Your Welcome. Reply
  • gatorproof - Thursday, June 28, 2012 - link

    SORRY my tablet types what it wants if I don't watch it. That's use DvdFab to convert BD movies down to 1.5GB. I use the Juicer which plugs into mini USB and still gives you A power port and Full USB, Full SD and Micro SD in a 1 inch by 1.75 inch device. Reply
  • chrnochime - Thursday, June 28, 2012 - link

    Got a link for that juicer? Google search turns up chargers for ipad and tablets. Reply
  • gatorproof - Saturday, June 30, 2012 - link

    Look above in my post. Host/card/snyc Juiced for Gslaxy s 2 on amazon gives micro sd.full sd.full usb and power port 20 bucks. Works on all 6 pin mini usb. Reply
  • neostar63 - Thursday, June 28, 2012 - link

    Thanks for providing something useful rather than just complaining. I will have to look into this. I am assuming this is an active cable that takes over hosting duties? Reply
  • Impulses - Thursday, June 28, 2012 - link

    Tablet handles everything if its a low power USB device, just need a cable like this:

    For a 2.5" drive or something like that you might need a powered USB hub.
  • JNo - Thursday, June 28, 2012 - link

    And mini HDMI out - as Tegra 3 can decode 1080p at 40mbit/s... Reply
  • Death666Angel - Thursday, June 28, 2012 - link

    I miss the (micro-)SD slot as well as the HDMI out. My Chinese tablet costs about as much and offers these things. Pity. Reply
  • cyborg1280 - Thursday, June 28, 2012 - link

    It would be great to have the Micro SD built in but one can use a micro usb to micro SD adapter if you really in need of a bit of extra local memory. Tablets by design have very limited storage even if you have the SD slot your still likely to be limited to lets say 32GB avg.

    Its best to access your media via your own hosted webserver or the Google Cloud as they would prefer. I believe its about the money, as you will have to pay Google once you reach your storage quotas. Smart way to reel eveyone in, regardless the product is an outstanding value and you can use it how you like.

    I have my own media server which allows me to access TV recordings, family footage, music, etc.. There are alot of great ways to setup your own media server and than you can host TB's of storage if you want for much less than a hosted service charges. Catch being you had better have backups since you dont have a 3rd party server to rely on.. Anyways Im tempted to pickup a Nexus 7 if they fair well in the reviews after the release.

    Videos, Photos, Music all take tons of storage space, so it makes sense to encourage everyone to store in the cloud.

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