Jelly Bean (left) vs Ice Cream Sandwich (right)
Google’s latest two Android versions are yet to become available to the majority of Android users, who are anxiously waiting for their devices to be updated to ICS and / or Jelly Bean. Android 4.0 Ice Cream Sandwich is available officially only on over 15% of existing devices, and Android 4.1 Ice Cream Sandwich is approaching the 1% mark.
Sure, there are plenty of unofficial ways to run either Android version on your existing device already, but we’re strictly referring to official Android builds here.
Whether you’re already an Android device owner, or whether you’re thinking about buying an Android smartphone or tablet, the Android version that runs on that gadget must certainly be a buying factor. So, what should you buy? An ICS-based device, hoping to see the Jelly Bean update roll out in a timely fashion – which is not what usually happens in the Android world – or a Jelly Bean-running device, one that will let you enjoy the very latest mobile OS fresh out of Google’s labs?
We have pitched Android 4.0 Ice Cream Sandwich vs Android 4.1 Jelly Bean on video, and we’re about to show you our findings. In addition to helping you make an informed buying decision, our ICS vs JB comparison will also help existing Android users decide whether installing a custom Jelly Bean version on your ICS-running device is a good idea.
In order to perform an objective Ice Cream Sandwich vs Jelly Bean comparison, we used two Samsung Galaxy Nexus, one running Android 4.0.4 Ice Cream Sandwich and the other one having Android 4.1.1 Jelly Bean installed. Needless to say, these are AOSP Android OS versions with absolutely no modifications or customizations on top of their factory settings. And since the two phones were identical, we were able to clearly see the differences between the ROMs running on them, without worrying about differences in hardware.
Ice Cream Sandwich (left) vs Jelly Bean (right)
So let’s look at this ICS vs Jelly Bean update. Spoiler alert: it’s all about, speed, aesthetics and search.
Jelly Bean is not a major update compared to ICS, as Google worked on three main components: speed and overall performance (Project Butter), “delightful improvements” for some of the most important Android apps and overall experience, and, last but not least, a complete Google Search app overhaul.
From the get-go, you’ll notice in our comparison video (embedded at the end of the post) that Jelly Bean is smoother and overall faster than Ice Cream Sandwich. Granted though, in some instances it may be harder to see the difference. The Jelly Bean User Interface (UI) looks almost the same as ICS’, but that doesn’t mean there aren’t plenty of new features in Android 4.1.
In both the ICS and the Jelly Bean stock ROMs, we discover a similar background image, the same app icons and app placement, and an identical Google Search bar. Comparatively, ICS looked nothing like its predecessor, Android 2.3.x Gingerbread. But Jelly Bean runs smoother, it’s more responsive, and, in most cases, it will beat ICS to the punch when it comes to transitioning to UI elements, loading apps, web pages or delivering results.
All that’s possible thanks to Jelly Bean’s “Project Butter”. We’re looking at graphics running at 60fps at all times, a 60Hz screen refresh rate, and triple buffering support, which helps Jelly Bean predict what you’re going to do next depending on your finger’s position on the touchscreen. That’s where the extra speed comes from when performing mundane, regular tasks on the device. Sure, some of you might not notice the smoothness of Jelly Bean when compared to ICS, but it’s definitely there, especially if you analyze it in slow motion.
Since we’re talking about speed, we may as well throw some numbers in from the quick benchmark tests we put the Galaxy Nexus smartphones running ICS and Jelly Bean through.
When performing the SunSpider Java test on Jelly Bean, we obtained a 1692ms score, compared to the 1880ms time scored by ICS when recording the video. In this case, lower is better, and therefore Jelly Bean wins, as its faster than its predecessor. It’s worth noting though that Android 4.0.4 tested better than Android 4.0 did in our earlier Gingerbread vs ICS comparison – at the time Gingerbread scored 1963ms on the Galaxy Nexus. That means that, in Jelly Bean, the browser will load web pages even faster than in previous OS versions, which is great news, especially considering that Chrome will become the default browser on Android Jelly Bean devices. (Note: The screenshot below, taken after recording the video shows a 1945ms score for ICS compared to Jelly Bean’s 1692ms score.)
The second test we performed was a Quadrant test, a benchmark that measures the CPU, 3D, and memory performance of the Galaxy Nexus units running ICS and Jelly Bean. While recording the video, Jelly Bean scored 2295 and ICS scored 1932. In this instance, higher is better, and Jelly Bean beats ICS once again, although it’s worth mentioning that we obtained higher CPU and memory speeds on the Galaxy Nexus device running ICS during the video. (Note: The screenshot below, taken at a different time shows a 1935 score for ICS compared to an even better Jelly Bean 2436 score.)
In addition to speed, Google also update the looks of Android in Jelly Bean. In fact, it’s probably safe to say that after trying Jelly Bean you won’t want to go back to ICS, let alone any former version. We’ll take a look at some of those “delightful improvements” that long-time Android users will certainly appreciate.
One of the main functions of a phone is making calls and sending text messages to one’s contacts, and Google decided to slightly improve its People’s app that handles those contacts, by letting users add high-resolution pictures for their contacts, which can be pulled right from their Google+ profiles, if available.
Not minding the slight color changes, the keyboard in the Message app looks pretty much similar on both ICS and Jelly Bean, but you should know that Google added various improvements to the latter’s text input, including a better dictionary and improved predictive text support. Most importantly though, the voice-based dictation feature now works in offline mode, which means you don’t need a Wi-Fi or data plan to dictate messages when using a Jelly Bean device.
The Notifications drawer has been greatly improved, not only when it comes to looks, but also functionality. Users will be able to perform various tasks from right inside the Notification shade, without having to go to the actual app that’s sending them. In addition, it all looks a lot better than on ICS.
The Notifications UI is more spacious, offering overall improved performance. Certain elements have been moved around; the clock is bigger and placed on the left side of the status bar, alongside the date and time. The Settings button is found in the same place, on the right side of the date, but it’s bigger and therefore easier to access.
One minor change in the Notification area is the replacement of the “x” button – which closes the Notifications shade – with a symbol that looks like steps in front of a building or some layers, depending on your imagination. That’s what you’ll have to press in Jelly Bean in case you want to remove all the notifications from the screen.
Naturally, users can access the Notifications drawer from the lock screen of the device, from where you can also get right into Google Now – more on that later.
The Settings menu is also slightly changed to offer more functionality. For example, Jelly Bean users will be able to customize what Notifications to receive, straight from inside the Apps submenu. That’s certainly handy for disabling spammy app Notifications, as you’ll be able to do that in one place. You’ll also notice a few almost imperceptible UI changes, including tweaks to the navigation menu and the black button bar.
In Jelly Bean, you’ll be able to swipe your finger to move from Downloaded to Running to All apps in the Apps section, whereas in ICS you’ll have to press on the appropriate tab to get there. Moreover, in Jelly Bean, the black bar found on the lower side of the phone in the Apps section is now completely gone – see following image.
When it comes to the Accounts submenu of Jelly Bean, you’ll notice that Google created a new drop down menu dedicated to Google+ and other social networking accounts, from where users can add their accounts instead of going to the Accounts and Sync menu in ICS’s Settings area.
Another interesting detail concerns the Developer options submenu. In ICS, the Developer options are enabled by default, while on Jelly Bean you have an ON/OFF switch that will let you enable or disable them. The available options are pretty much similar, although, in case you’re not a developer you won’t bother with them too much.
The About Phone submenu will show you various details about the phone, and that’s where you’ll find out what OS the handset is running and discover the Easter Eggs for each OS version.
Ice Cream Sandwich (right) vs Jelly Bean (left)
One interesting thing that we noticed in the Wireless and Networks submenu is the lack of Direct Wi-Fi connectivity, but that’s where Android Beam comes in, as the feature has been updated in Jelly Bean to offer advanced NFC-based sharing features.
In Jelly Bean, Google also made certain changes to the way apps and widgets react and work. When it comes to Widgets, you’ll notice that all Widgets are resizable, which is an update over ICS. The Home screen itself will adapt to the new Widgets, rearranging icons according to your finger’s movements in order to make room for the Widget you’re about to add; this doesn’t happen in ICS.
As for Google Play store downloads, one useful feature Jelly Bean has to offer is partial download for updates. You’ll no longer have to re-download the entire app whenever its creators update it. Instead, only the files that have been updated will be transferred to your device, which means you’ll be able to enjoy faster updates.
Google has pretty much kept in place the app management features found on ICS. You can expect Jelly Bean to offer the same features – the same multitasking system, the Recent Apps menu, the same swiping gesture to dismiss running apps (which can also be used inside the browser, the Camera app or the Notifications app to discard elements). But, even if its imperceptible to the naked eye, the whole process will be faster.
At the same time, Google did update some of the apps inside Jelly Bean.
The YouTube app has been overhauled to offer a better, more touch-friendly UI. Google replaced the default YouTube design with a customized interface characterized by bigger “buttons” – video thumbnail images – and the absence of unnecessary details about videos. Furthermore, in order to access your channels and settings, you’ll just have to swipe to the right to reveal the hidden menu you were looking for.
The Camera app has also been improved in Jelly Bean, to let users take and access pictures a lot faster than in ICS. The visual effects, such as transitions between pictures taken at a very fast-paced rate, are obvious in Jelly Bean, which lets users realize they’re actually taking multiple photos at once.
The Gallery on Jelly Bean is just one swipe-to-the-right away, which means users will get to their pictures straight from the Camera mode, faster than on ICS handsets. From the same place, they’ll be able to delete unwanted picture and share their favorite ones with friends and family. They’ll be back to Camera mode in no time.
There are some big changes under the hood of Google’s Search app in Jelly Bean compared to ICS. For starters, the Search bar has a more distinctive color, making it even more obvious on the Home screen than before. After all, Google’s main revenue stream is Search-based, so we’re not surprised to see the company continue to develop the feature on its mobile OS.
What’s interesting though is that Google overhauled the whole app to better adapt it to mobile needs. By harnessing “the power of the Knowledge Graph,” combined with the user’s willingness to drop his or her privacy guard, Google is able to offer search results faster and to display them in a more entertaining manner. Instead of boring PC-like results, we have cards that show the answers we’re looking for – albeit you can always see the “regular” search results too, if the information presented on the card does not meed your needs.
Jelly Bean – Google Search Card
Moreover, the Google Now feature will offer improved functionality offering presonalized results for various daily activities, such as commuting to work, traffic, weather, calendar appointments, flight information or sporting events. This is where you’ll have to drop your privacy guard and let Google learn a thing or two about yourself to benefit from such custom results.
And, in case it matters, Google Now can be accessed right from the Lock screen – it’s a third option, by swiping your finger in an upward direction, in addition to unlocking the device or going to Camera mode.
The Voice-based assistant is clearly better than the voice search feature found on ICS and, for what it’s worth, we’ve already seen it beat Siri in a variety of comparison videos.
While ICS can hold its own when it comes to search speed and deliver accurate voice-based search results, the voice-based search feature really shines in Jelly Bean. Sure, in some instances ICS was slightly faster in our comparison, particularly when asking for directions to a certain destination. ICS went straight into Navigation mode, while Jelly Bean offered one of those new Card-based search results. But the Voice-based assistant in Jelly Bean is definitely more enjoyable, especially as it’s able to offer actual voice-based answers to your queries.
After seeing any Ice Cream Sandwich vs Jelly Bean comparison, there’s only one conclusion that can be drawn: Jelly Bean is the way to go for any Android user that wants a smoother, faster, buttery version of Android. Jelly Bean comes with plenty of added UI perks that can offer an overall improved smartphone experience. And there are plenty of tiny things to discover yourself, as we have barely scratched the surface here.
In case you need more details in addition to today’s ICS vs Jelly Bean video comparison, we’ll remind you that we have already shown you the full changelog of Android 4.1 Jelly Bean, but also pitted the new Android OS version against Apple’s iOS 6 and Microsoft’s Windows Phone 8, in a theoretical comparison, since at the time we didn’t have access to any of the three new operating systems.
And, without advising you to go down that path, we have also showed you various unofficial Jelly Bean builds for Android devices out there, although we’re yet to see many official Jelly Bean rollout dates.
What about you? What are the features that you like the most at the new Android 4.1 Jelly Bean?
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And since Google loves bad design, you are still forced to suffer the stupid search bar on all pages (and the dock). This is bad design and should be removable WITHOUT HAVING TO INSTALL ANY THIRD PARTY CRAP. (Who do they think they are, Apple?)
Not sure if trolling or just stupid…. :
Uh I assume your either a Windows Phone die hard fan or a iOS die hard fan. Either way I like both iOS and Android, Maybe I could skin my build of android to have the glossy iOS look xD. But no really I think I’d stick with the default skin because, Android has gotten “Gooey”, and more robust than its version predecessors. I’m on 2.3.4, I absolutely don’t like it., But I’m looking at ICS and JB, I see a totally different OS a better OS, an OS that is more sustainable than it’s predecessor.
Who said that the Google search bar can’t be removed? Just go to the settings and you will find!
Actually buddy, the Google Search Bar is integrated on all pages within the home screens. That is, unless you run a third party app, an option to remove it will not be provided on a stock UI. Cheers
great and detailed article
Do these so called “details” make a huge diff in your life?! Sad if so :)
Life is really about the finer nicer things and yes these details do make a difference of an ordinary to a fantastic day
Can’t wait to get official JB to my sgs3 :) I hope it comes in Q3
October, so Q4! Exact dat is not announced yet.
Can’t wait for it to hit my HTC one x. sense 4.0 is super light and probably closest thing you can get to vanilla UI with out rooting your phone. also the one x is getting sense 4.1 which is supposed to be even lighter. Put that together with Jelly Bean and we have a winner :)
HTC Sense is actually one of the heaviest. The lightest is problably Motorolas skin then maybe touch wiz by samsung
Can’t wait to get official JB to my HTC One V
Hope it comes
I could not agree more.
Cant wait to see how it works with my HTC EVO3D :D
Just updated my uk xoom wifi to 4.1 and find that I cannot install flash! BAD NEWS AS I CAN’TUSEBBC IPLAYER.philt749
I cannot wait for Jelly Bean to be released for the HTC One V.
I cant wait to get my JB for my IPHONE clone.
I would Love Jellybean on my android. but im stuck with this old fone that only has 2.3.6 gingerbread.. and would like to know if the is any way to update it?
Which phone are you using? Root it, ROM it, call it good.
I have a HTC Incredible 2, I’m planing on rooting it to 4.1. When the warranty expires. I love the GUI of iOS but the freedom of Android[Meaning It allows you to do what you want to do with you device]
not sure you can get that up to 4.1.. but For sure you can use cyanogen mod 7, heres a full guide on how to do everything
http://wiki.cyanogenmod.com/wiki/HTC_Incredible_2:_Full_Update_Guide which will get your phone to as badass as it possiblly can be… cyanogen mod will make your phone into a badass… http://www.cyanogenmod.com for anybody else looking to upgrade their old phones…
Of course there is a way! It requires you to root the phone and manually install firmwares by accessing your systems files. Search it up on Google. I guarantee you that you will find many solutions! I advise you to specifically scavenger through the xda forums
Sucks for you guys still waiting on updates. Good thing I got jb on my nexus. Can’t wait for key like pie!!
where do you get JB for GNex?
I fail to understand why contact management is being ignored by all. The most important is to be able to search a contact by mobile, email address etc. Merging duplicates and adding new contacts.
I don’t know what you’re using. But my ICS phone can search by name and number (not sure about email, I’ve never tried), merge contacts cross platforms ( skype contact, facebook contact, and mobile contact info all together under the same contact’s name) then save those settings to your google account in case theyre ever lost, or for easier management… it also has settings and options to manually merge or edit duplicates…
Albeit it could be made easier, but the feature is already there and convenient in itself… It works, so I don’t believe its been ignored….
Just root it lol
Those are really great improvements…..I have it asap!……..hahaha
I am using 2.3.4 version of android now … If i update it ICS now and later on when JC comes can i update it to that or should I wait for JC to come??? …… My phone is Sony xperia Arc S
you should be able to do an OTA update to ICS…If/When JB is out for the xperia Arc S there would be an option for OTA again..Or better still you could root and get all the JB goodness rt now.
It’s gonna b here in October for galaxy s3
i am using Samsung Galaxy S2 with firmware 2.3.3 with model GT-I9100. Can i upgrade to Jelly Bean 4.0? and how to i upgrade? please advice
jelly bean is 4.1..if your still running gingerbread(2.3.3 is pretty old..you should have been able to upgrade to 2.3.6 by now) on your galaxy s2 then you could try doing an OTA(go to settings>about phone>system firmware update) to ICS 4.0 if available in your country..the Jellybean update is not yet confirmed for any regions.
Can someone tell me how to upgrade my sprint galaxy s3 by rooting it? My email is email@example.com
Btw im on android 4.0
Does Media Scanner kill your battery?
can’t for the news to flash iphone with jelly bean OS or at least froyo OS :D
I heard Jelly Bean does not have flash, is it best to download it?
adobe Flash is unsupported in jelly bean no matter what the advertisements say. You cannot even download it from the app stores because adobe will not sign off on the certification. Upgrade to jellybean= loose flash
right now, I’m a applehead, but will be switching to Android real soon. What is meant by “Rooting your phone ??”
It basically means you can do ANY thing you want
JB works awesome with my sght989 :O
Very informative. Answered every question I had!
Why didn’t you compare battery life?
Especially with Project Butter’s improved FPS and hardware utilization that’s going to drain battery like crazy.
I agree, I just (less than 4 weeks ago) got an android phone. (SGS3) and it, compaired to my old iPhone, Eats batteries! More stuff “under the hood” will just make that worse. Is there any way to say I don’t want this “up”grade?
did you try to deactive google now? i doubt if i should upgrade but users of jelly says that if they deactivate google now and a couple of other battery consumption is vastly reduced, but don’t know if it’ll reach to icecream. if you try let me know~!
How do u root the samsung galaxy tab2 7.0?
Great article, looking forward to updating my SIIII
I agree, great article! Just don’t think the apparent power drain will help. NOT looking forward to having to upgrade. (just got notice and postponed it).
Just got a Jelly Bean upgrade on my Asus Tprime TF201.. :-):-):-)
i am using Samsung Galaxy S2 LTE with firmware 4.0.4 with model SHV-E110S. Can i upgrade to Jelly Bean 4.1? and how to i upgrade? please advice.My email is firstname.lastname@example.org
when is JB coming for motorola xoom mz601???
I cant wait for so long
Just ordered a 7″ tablet with ICS, so upon getting it when can I update to Jelly Bean?
Sorry, all this talk about Ice cream sandwiches, and Jelly Beans has made me hungry, Reminds me of Windows 3.0 V’s 3.1. Programmers fixing something they previously overlooked or did wrong.
i want to upgrade Android 2.3 to 4.0 can it be able to do that?
I am using it on my nexus, great, superb
i am using a Samsung Galaxy S 2….can i update the jelly bean on my device.i am alreadt upgrded to ICS,but i want Jelly Bean,is there anyway?
the winner ist the iphone 5
Great video. Real life tests. Thanks!
I have ICS on my 10.1 Notepad and JB on my Note 2. JB is a definite improvement, much more noticeable than the recent iOS upgrade on my works iPhone 4S. Go Goog.
i got it for my samsung s3 :) its awesome :) loving it :)
IF Jelly Bean is to come in 4Q of 2012, someone better get off their ass and do something, so that we don’t have a second disappointment to end 4Q 2012; with the first one being the corrupt victory of the muslim now continuing to trespass in the white house.
you guys didn’t mention how the return key changes when the keyboard pops up
Major downside of JB…battery life went from bad to awful on my Galaxy Nexus. I have an extended battery and still can’t make it through a day!
I had to turn off all of the cards to save battery. (And most got annoying telling me how far my drive was that I was not taking from my home office.)
Will all the features of ICS run in SG music duos(new release)? I’m thinking of buying the handset, but not too sure about whether i’ll be able to enjoy all he features of ICS in that phone. And whether it’ll be suitable to later update it to jelly bean version on the same handset???
Would I be able to upgrade my galaxy s2 epic 4G???
Sadly it just looks just as flat, dark and ugly as ICS by default. Got any tutorial to increase readability by making the colours of the interface go from black/blue/white to white/purple/black?
Screenshot option disable in jb (it is the only bad thing).
Excellent comparison with images, very useful….. thanks lot… KN.SAKTHIVEL, CHENNAI, INDIA
fantastic review.. it opens up my mind and decided to go with 4.1 JB than the 4x ICS.. ended up in GT N7100.. cheers dude..
i had an app which i dont remember the name exactly but it came with android 2.3 until 4.0 which i could add some todo lists etc. i had some stuf in that app. after i updated to jelly bean version that app has disappeared and hence i lost the data in it. can any one tell me what was the exact name of that app? you could just create some simple tasks or todo stuff in it. i can’t find that app in jelly bean.
Try ColorNote – very neat app. Be sure play with options on that one.
cm9 coming soon in my lg optimus l3 e-400!!!!
I tried both ics 4.0.4 , and jb official leaked on gs2(GT-I9100),both rooted.ICS4.0.4 performed much better than JB overall.With ICS4.0.4 i obtained a cf benchmark of 7880(official gs2 benchmark was only 6400 in cf) and with quadrant i obtained 4120 with ics4.0.4 which is more than asus transformer prime.Both cf & quadrant benchmarks were lower with JB(cf 2000 lower and quadrant 1000).
The greatest defect i found with JB is that it doesn’t support homescreen wallpaper scrolling as in ics4.0.4.JB also lacks task manager app as in ICS 4.0.4(you have to download gs3 taskmanager from google play if you want to use task manager with JB sgs2.
Also in JB external sd card is mounted seperately from sd card unlike in previous versions.Problem with this is although stock file manager and some others like Astro detects ext.sd,most of the file managers and file related apps cannot find ext sd in JB.
May be it’s because it’s a leaked version and has bugs.But overall ics4.0.4 is still much better.
I upgraded my Galaxy s2 from ICS to Jelly Bean and I have to say I am underwhelmed. Whatever JB did to the camera functionality made it horrible. It won’t autofocus when taking a picture and the video quality (which was GREAT in ICS) now is terrible.
If anyone has a fix for this, I’d sure like to hear it.
Plus I do NOT like that I can’t set up individual Contacts on my desk top….why did they get rid of that…stupid. You have to do the 3 Favorite contacts, and then nine more on another screen.
Perfect! I’m sold! great article Thank you
Forgive me, but you know…the one product over the other performing “a bit quicker”, or “it got there a little faster”, or “seems to beat the other”, etc is a bunch of crappola.
1st of all, what’s LESS than a second even freakin’ MATTER?!?!?
2ndly, I would guess that “X” device doesn’t ALways get there faster 100% of the time.
On and on I could go, but the FACT is, the person who put this video together and e/one who buys that newer is always improved, bigger & better buys into the marketing hook, line and sinker!
As far as appearance of the screen if one phone has a SLIGHTLY higher pixel count is ALSO balderdash! Here again, the FACT is that looking at them side/side and not disclosing which is which can’t be detected.
It’s a shame that so many have to have the newest thing on the market! lol Geesh, it’s like a child/teen who has not learned to be content with such things as they have who just HAVE TO have the designer clothes, etc. This applies to Apple Fans too and the scores of people who line up DAYS prior to the new iPhone introduction cause they “can’t live without it”.
Bottom line is, it’s a sad state of affairs in your lives I see.
Now, if the shoe fits, wear it and don’t bother with a rebuttal…save your energy and time unless you just want to stroke your ego, because I surely won’t visit this page again to see you rail against me! :) haha
theres no wifi direct in Jelly bean, theres no flash in jelly bean.
I can’t tell you how much I disagree with this. I absolutely loved my GS2 and was really looking forward to the jelly bean update but now I have it I absolutely hate it. it has eaten so much memory it crashes daily and I have had to delete half my apps and remove all my widgets for it to function. the dictionary doesn’t work with most apps (not recognising frequent words, no automatic capital or space). if I turn it off or it crashes, apps on my home screen turn to ‘ghosts’ and I have to replace them. I could go on & on but what’s the point? I just wish reviews had been more accurate and then I would have turned off updates and stayed with ics
Busy installing on my Samsung Galaxy S2 in South Africa on Vodacom. That took a while hehe…
Can I upgrade from ICS to JellyBean on my Galaxy Tab 10.1 ?
I hate Jelly Bean for my tablet….damn thing keeps popping stupid messages, turning of screen in middle of video stream, which it does worse than ICS. I want to go back, how do you do it?
i know most of you have the nicer phones,and i am with tracfone,to save money,we are retired.i want one of the androids with tracfone,leaning towards the zte valet,has 4.1 jelly bean.the other one im looking at is the hauwei glory, 4.0 ice cream sandwich.any thoughts? ive read many reviews,all good for zte but hear the wifi is not real good.please,any advice i appreciate.thank you kindly..
can you please do a test for battery life of each? i have to make sure that it can take at least 3-4 days if it is on standby mode.