Desktops (Apple)

Apple's ARM-Based Macs To Support Thunderbolt (theverge.com) 137

tlhIngan writes: For those worried that the transition Apple is doing to ARM-based Macs will drop Thunderbolt, Apple has stated that they will continue to support Thunderbolt. This was a worry since Thunderbolt is primarily an Intel design (formerly known as Light Peak) with Apple collaboration, and that none of Apple's ARM based devices support it (not even the ARM Developer Transition Kit).
Security

New Apple macOS Big Sur Feature To Hamper Adware Operations (zdnet.com) 16

With macOS 11, also known as Big Sur, Apple has removed the ability to install macOS profile configurations from the command-line. ZDNet reports: This ability was previously a core feature of macOS' enterprise package, which allows system administrators to deploy new configurations company-wide via automated scripts. However, the ability to deploy a new profile config via the command-line has also been abused by malware gangs or adware strains, who used it because it was silent and didn't require any type of user interaction. Hackers or malware authors who gained access to Mac Deployment servers or who infected just one Mac, abused the command-line to deploy their own malicious configurations to hijack proxy settings, change default apps, and more.
Security

New Mac Ransomware Is Even More Sinister Than It Appears (wired.com) 49

An anonymous reader quotes a report from Wired: The threat of ransomware may seem ubiquitous, but there haven't been too many strains tailored specifically to infect Apple's Mac computers since the first full-fledged Mac ransomware surfaced only four years ago. So when Dinesh Devadoss, a malware researcher at the firm K7 Lab, published findings on Tuesday about a new example of Mac ransomware, that fact alone was significant. It turns out, though, that the malware, which researchers are now calling ThiefQuest, gets more interesting from there. In addition to ransomware, ThiefQuest has a whole other set of spyware capabilities that allow it to exfiltrate files from an infected computer, search the system for passwords and cryptocurrency wallet data, and run a robust keylogger to grab passwords, credit card numbers, or other financial information as a user types it in. The spyware component also lurks persistently as a backdoor on infected devices, meaning it sticks around even after a computer reboots, and could be used as a launchpad for additional, or "second stage," attacks. Given that ransomware is so rare on Macs to begin with, this one-two punch is especially noteworthy.

Though ThiefQuest is packed with menacing features, it's unlikely to infect your Mac anytime soon unless you download pirated, unvetted software. Thomas Reed, director of Mac and mobile platforms at the security firm Malwarebytes, found that ThiefQuest is being distributed on torrent sites bundled with name-brand software, like the security application Little Snitch, DJ software Mixed In Key, and music production platform Ableton. K7's Devadoss notes that the malware itself is designed to look like a "Google Software Update program." So far, though, the researchers say that it doesn't seem to have a significant number of downloads, and no one has paid a ransom to the Bitcoin address the attackers provide. [...] Given that the malware is being distributed through torrents, seems to focus on stealing money, and still has some kinks, the researchers say it was likely created by criminal hackers rather than nation state spies looking to conduct espionage.

Privacy

Zoom Misses Its Own Deadline To Publish Its First Transparency Report (techcrunch.com) 5

How many government demands for user data has Zoom received? We won't know until "later this year," an updated Zoom blog post now says. From a report: The video conferencing giant previously said it would release the number of government demands it has received by June 30. But the company said it's missed that target and has given no firm new date for releasing the figures. It comes amid heightened scrutiny of the service after a number of security issues and privacy concerns came to light following a massive spike in its user base, thanks to millions working from home because of the coronavirus pandemic.

In a blog post today reflecting on the company's turnaround efforts, chief executive Eric Yuan said the company has "made significant progress defining the framework and approach for a transparency report that details information related to requests Zoom receives for data, records or content. We look forward to providing the fiscal [second quarter] data in our first report later this year," he said. Transparency reports offer rare insights into the number of demands or requests a company gets from the government for user data. These reports are not mandatory, but are important to understand the scale and scope of government surveillance.

Intel

First Apple Silicon Benchmarks Destroy Surface Pro X (thurrott.com) 218

As expected, developers with early access to Apple silicon-based transition kits have leaked some early benchmarks scores. And it's bad news for Surface Pro X and Windows 10 on ARM fans. Thurrott reports: According to multiple Geekbench scores, the Apple Developer Transition Kit -- a Mac Mini-like device with an Apple A12Z system-on-a-chip (SoC), 16 GB of RAM, and 512 GB of SSD storage -- delivers an average single-core score of 811 and an average multi-core score of 2871. Those scores represent the performance of the device running emulated x86/64 code under macOS Big Sur's Rosetta 2 emulator.

Compared to modern PCs with native Intel-type chipsets, that's not all that impressive, but that's to be expected since it's emulated. But compared to Microsoft's Surface Pro X, which has the fastest available Qualcomm-based ARM chipset and can run Geekbench natively -- not emulated -- it's amazing: Surface Pro X only averages 764 on the single-core test and 2983 in multi-core. Right. The emulated performance of the Apple silicon is as good or better than the native performance of the SQ-1-based Surface Pro X. This suggests that the performance of native code on Apple silicon will be quite impressive, and will leave Surface Pro X and WOA in the dust.

Desktops (Apple)

Rosetta 2 is Apple's Key To Making the ARM Transition Less Painful (theverge.com) 153

At WWDC 2020 earlier this week, Apple announced that it's moving Macs away from Intel processors to its own silicon, based on ARM architecture. To help ease the transition, the company announced Rosetta 2, a translation process that allows users to run apps that contain x86_64 instructions on Apple silicon. The Verge reports: Rosetta 2 essentially "translates" instructions that were written for Intel processors into commands that Apple's chips can understand. Developers won't need to make any changes to their old apps; they'll just work. (The original Rosetta was released in 2006 to facilitate Apple's transition from PowerPC to Intel. Apple has also stated that it will support x86 Macs "for years to come," as far as OS updates are concerned. The company shifted from PowerPC to Intel chips in 2006, but ditched support for the former in 2009; OS X Snow Leopard was Intel-only.) You don't, as a user, interact with Rosetta; it does its work behind-the-scenes. "Rosetta 2 is mostly there to minimize the impact on end-users and their experience when they buy a new Mac with Apple Silicon," says Angela Yu, founder of the software-development school App Brewery. "If Rosetta 2 does its job, your average user should not notice its existence."

There's one difference you might perceive, though: speed. Programs that ran under the original Rosetta typically ran slower than those running natively on Intel, since the translator needed time to interpret the code. Early benchmarks found that popular PowerPC applications, such as Photoshop and Office, were running at less than half their native speed on the Intel systems. We'll have to wait and see if apps under Rosetta 2 take similar performance hits. But there are a couple reasons to be optimistic. First, the original Rosetta converted every instruction in real-time, as it executed them. Rosetta 2 can convert an application right at installation time, effectively creating an ARM-optimized version of the app before you've opened it. (It can also translate on the fly for apps that can't be translated ahead of time, such as browser, Java, and Javascript processes, or if it encounters other new code that wasn't translated at install time.) With Rosetta 2 frontloading a bulk of the work, we may see better performance from translated apps.
The report notes that the engine won't support everything. "It's not compatible with some programs, including virtual machine apps, which you might use to run Windows or another operating system on your Mac, or to test out new software without impacting the rest of your system," reports The Verge. "(You also won't be able to run Windows in Boot Camp mode on ARM Macs. Microsoft only licenses the ARM version of Windows 10 to PC manufacturers.) Rosetta 2 also can't translate kernel extensions, which some programs leverage to perform tasks that macOS doesn't have a native feature for (similar to drivers in Windows)."
Intel

Former Intel Engineer Claims Skylake QA Drove Apple Away (pcgamer.com) 252

UnknowingFool writes: A former Intel engineer has put forth information that the QA process around Skylake was so terrible that it may have finally driven Apple to use their own processors in upcoming Macs. Not to say that Apple would not have eventually made this move, but Francois Piednoel says Skylake was abnormally bad with Apple finding the largest amount of bugs inside the architecture rivaling Intel itself. That led Apple to reconsider staying on the architecture and hastening their plans to migrate to their own chips. "The quality assurance of Skylake was more than a problem," says Piednoel. "It was abnormally bad. We were getting way too much citing for little things inside Skylake. Basically our buddies at Apple became the number one filer of problems in the architecture. And that went really, really bad. When your customer starts finding almost as much bugs as you found yourself, you're not leading into the right place."

"For me this is the inflection point," added Piednoel. "This is where the Apple guys who were always contemplating to switch, they went and looked at it and said: 'Well, we've probably got to do it.' Basically the bad quality assurance of Skylake is responsible for them to actually go away from the platform."

Apple made the switch official at its developer conference on Monday, announcing that it will introduce Macs featuring Apple-designed, ARM-based processors later this year.
Businesses

Apple's Major Leap Is Unification and More Lock-In, Not Big New Features (bloomberg.com) 152

Apple's Worldwide Developers Conference this week didn't bring any particularly revolutionary new feature, but it did something perhaps more important for Apple's long-term strategy. The latest updates will unify the company's devices and give customers more reasons to stay within its product ecosystem. From a report: From an average user's standpoint, the updates to iOS and iPadOS were underwhelming and minor, aside from widgets (which Android has had for years). Siri's interface changes were impressive, but there wasn't much discussion of a needed under-the-hood revamp, and the Watch update was incremental, other than sleep tracking. The company didn't let these products languish, but Apple's engineers essentially did just enough. The really impressive achievements came in getting the products to work together, plus sweeping improvements to the Mac.

The biggest news of the conference was that Apple-made chips will replace those from Intel in Mac computers. Besides higher speeds and longer battery life, the change customers will notice first is that Mac computers will work more like an iPhone or an iPad, and will have the ability to run the same apps on the new macOS Big Sur operating system. Soon, someone will be able to buy an iPhone app and run it across Apple's major platforms: the Mac, the iPhone, the iPad, and in some cases a variant of it on the Apple Watch and Apple TV. The company also moved toward increased unification by bringing over glance-able information (widgets) from the Apple Watch to its larger devices, and by more deeply integrating its smart home features across products. For example, a HomePod speaker can now be a doorbell and an Apple TV can be a door camera viewer. All of this may drive existing customers to buy additional Apple products, knowing that they'll work together seamlessly. The strategy could boost Apple's sales in the long-term and, just as importantly, make it more difficult for a user to leave behind a device, which could blow a hole in their network of Apple products.

IOS

Apple Will Let You Emulate Old Apps, Run iOS Apps on ARM Macs (techcrunch.com) 213

At the WWDC 2020 keynote today, Apple announced that the company is going to switch from Intel chips to Apple's own silicon, based on ARM architecture. They also announced that iPad and iPhone apps will be able to run natively on ARM-powered Macs. TechCrunch reports: First, you'll be able to compile your app to run both on Intel-based Macs and ARM-based Macs. You can ship those apps with both executables using a new format called Universal 2. If you've been using a Mac for a while, you know that Apple used the same process when it switched from PowerPC CPUs to Intel CPUs -- one app, two executables. As for unoptimized software, you'll still be able to run those apps. But its performances won't be as good as what you'd get from a native ARM-ready app. Apple is going to ship Rosetta 2, an emulation layer that lets you run old apps on new Macs.

When you install an old app, your Mac will examine the app and try to optimize it for your ARM processor. This way, there will be some level of optimization even before you open the app. But what if it's a web browser or a complicated app with just-in-time code? Rosetta 2 can also translate instructions from x86 to ARM on the fly, while you're running the app. And if you're a developer working on code that is going to run on servers, Apple is also working on a set of virtualization tools. You'll be able to run Linux and Docker on an ARM Mac.

As a bonus, users will also be able to access a much larger library of apps. "Mac users can for the first time run iOS and iPadOS apps on the Mac," Apple CEO Tim Cook said. While the company didn't share a lot of details, Apple isn't talking about Catalyst, its own framework that makes it easier to port iOS apps to macOS. You should be able to download and run apps even if the developer never optimized those apps for macOS.

Desktops (Apple)

Apple Announces macOS Big Sur With a Brand-New Design (theverge.com) 92

Apple has unveiled the next version of macOS: Big Sur. From a report: The new operating system brings the biggest redesign since the introduction of macOS 10, according to Apple. Big Sur borrows a number of elements from Apple's iOS, including a customizable Control Center, where you can change brightness and toggle Do Not Disturb, and a new notification center, which groups related notifications together. Both interfaces are translucent, like their iOS counterparts. A number of apps have received streamlined new redesigns, including Mail, Photos, Notes, and iWork. Apple has introduced a new search feature to Messages (which organizes results into links, photos, and matching terms), as well as inline replies for group chats, a new photo-selection interface, and Memoji stickers. There's a new version of Maps for Mac that borrows features from the iOS app, including custom Guides, 360-degree location views, cycling and electric vehicle directions (which you can send directly to an iPhone), and indoor maps. Apple introduced a number of new Catalyst apps as well. Dock buttons have also been redesigned to look more similar to their iOS counterparts, in an effort to "be more consistent with icons across Apple's ecosystem while retaining their Mac personality," according to the company.

Apple also announced the biggest update to Safari since the browser was first introduced. The company claims its browser is 50 percent faster than Chrome and can show more tabs on-screen. Hovering over a tab now gives users a preview of its page, and right-clicking on the tab will give you the option to close all the tabs to its right. The new Safari also has a customizable start page and a built-in automatic translation feature that can interpret entire webpages in seven languages, Apple says. Safari is also getting support for extensions made for other browsers, and a dedicated extension store. (Unlike many other browsers, Safari will allow you to customize which sites your extensions run on). And there are new privacy features, including a Privacy Report that details actions the browser has taken to prevent tracking on the websites you visit.

Portables (Apple)

This is Apple's Roadmap for Moving the First Macs Away from Intel (arstechnica.com) 383

After 15 years, Apple will again transition the Mac to a new architecture. The company announced at its developer conference today that it will introduce Macs featuring Apple-designed, ARM-based processors similar to those already used in the iPhone and iPad. From a report: Tim Cook pegged this switch as one of the four biggest transitions the mac has ever had. Alongside the more to PowerPC, the move to Intel, and the transition to Mac OS X, ARM will be one of the biggest mac changes ever. Apple is promising "a whole new level of performance" with a "Family of Mac SoCs." The transition to ARM from x86 means that some apps will be native and some won't. For mac OS 10.16, Apple says that all of the Apple 10.16 apps are native ARM apps. Xcode developers can "just open their apps and recompile" to get an ARM binary. "Universal 2" is a new type of binary that will run on Intel and ARM macs. Microsoft Office and Adobe's creative suite (Photoshop) were demoed as native ARM apps. Final Cut Pro has an ARM version too, along with a features that run on the "Neural Engine" in the Apple SoC.

Apple says it wants to make sure users can run all their apps on their ARM mac, even if they aren't native. So, just like with the PowerPC-to-Intel transition, Apple is dusting off the Rosetta brand with Rosetta 2, which is now an x86-to-ARM emulator. This move has been predicted for years, as the upsides for Apple are clear. Cupertino has always valued tight integration of hardware, software, and services, but Macs have been outliers among Apple's products in their reliance on an outside party for the CPU. (iPhones and other Apple products do contain display panels, modems, and camera components made by other companies, though.) So far, Apple's chip division has excelled in every market it has entered. In the world of smartphones, the company's SoCs are easily a generation ahead of the best Qualcomm, Samsung, and Mediatek have to offer. Apple's most dominant smartphone showing is probably the iPhone SE, a $400 iPhone that will out-perform $1200 Android phones thanks to the A13 Bionic SoC.

Desktops (Apple)

What Happens If Apple Switches to Its Own ARM Chips for Macs? (cnn.com) 280

CNN reports that Apple could announce "a long-rumored switch" from Intel chips to its own ARM-based chips for Macs at its WWDC conference Monday -- citing a report from Bloomberg.

Then they consider the possible advantages: When that does happen, the major changes Mac users are likely to see include better battery life and sleeker devices. Apple's in-house chips have a smaller architecture and are more efficient because they are designed for smartphones, according to David McQueen, research director at ABI Research... "Moving to ARM-based chips can bring efficiencies and better battery life without sacrificing performance," McQueen said. "It may also help to cut out some size issues, possibly allowing Macs to be made thinner, while also negating the need for fans," he added.

McQueen says having the same chips running on iPhones, iPads and Macs would also make it easier to standardize the user experience across all three devices. "It will allow all Apple devices to work more seamlessly together," he said. "It should also make it much easier for developers to create apps that are capable of running across Apple devices." There's another big potential benefit to using the same chips for iPhones and Macs, particularly with the growth of 5G networks. "Although Apple has given no indication that it is looking to do so, this switch does also open the doors for Apple to launch MacBooks with cellular connectivity capabilities," Mardikar said.

For Apple, bringing processor production in-house will likely allow the company to offer better performance upgrades with each generation of devices because it will no longer be tied to Intel's upgrade cycle for new chips. "They also get to control their own product launch cadence," said Jitesh Ubrani, a research manager at IDC. "In the past, they had to really wait on Intel to launch new processors before they could refresh the Mac lineup."

Firefox

Mozilla To Launch VPN Product 'in the Next Few Weeks' (zdnet.com) 73

An anonymous reader quotes a report from ZDNet: Mozilla has announced today that its highly anticipated VPN (virtual private network) service will launch later this summer, "in the next few weeks." The product has also been renamed from its original name of Firefox Private Network to its new brand of the "Mozilla VPN." The name change came after Mozilla expanded the VPN product from the initial Firefox extension to a full-device VPN, capable of routing traffic for the entire OS, including other browsers. Currently, the Mozilla VPN offers clients for Windows 10, Chromebooks, Android, and iOS devices. Mozilla said beta testers also requested a Mac client, which they plan to provide, along with a Linux app.
Google

Google Partners With Parallels To Bring Windows Apps To Chrome OS (engadget.com) 13

For years, Parallels has provided virtualization software so you could run full Windows installs on a Mac, but today they're tackling a new OS. From a report: The company just announced that it is partnering with Google to work on bringing full Windows application support to Chrome OS enterprise devices. That's a big deal for the many businesses out there that run various pieces of legacy Windows software -- or just any business that wants to run Microsoft's Office software natively. It could Chrome OS devices a lot more viable in a variety of workspaces that may have previously had to rely on Windows hardware, though of course that'll depend on how well it is implemented. How exactly this will work remains to be seen; Parallels only said that partnership would "seamlessly add full-featured Windows apps, including Microsoft Office, to Chromebook Enterprise devices."
Desktops (Apple)

Ahead of WWDC, Apple's Developer App Adds Mac Support, New Features, iMessage Stickers (techcrunch.com) 15

Ahead of Apple's Worldwide Developer Conference starting next week, the company has today launched a new version of its Apple Developer App to better support its plans for the virtual event. TechCrunch reports: Notably, the app has been made available for Mac for the first time, in addition to a redesign and other minor feature updates. With the needs of an entirely virtual audience in mind, Apple has redesigned the app's Discover section to make it easier for developers to catch up on the latest stories, news, videos and more, the company says. This section will be regularly updated with "actionable" content, Apple notes, including the latest news, recommendations on implementing new features, and information about inspiring engineers and designers, alongside new videos.

It has also updated its Browse tab where users search for existing sessions, videos, articles and news, including the over 100 technical and design-focused videos found in the WWDC tab. The WWDC tab has also been updated in preparation for the live event starting on Monday, June 22. The redesign has added a way to favorite individual articles, in addition to session content and videos. Plus it includes new iMessage stickers along with other enhancements and bug fixes. The app, which was previously available on iPhone, iPad and Apple TV, is also now offered on Mac.

Chromium

Google Chrome 85 To Allow Users To Compose Tweets From Windows 10 Taskbar (thewindowsclub.com) 22

In the "quick launch bar" of Windows 10, native app icons "support a shortcut menu for commonly or frequently performed tasks in the app. This menu can be invoked by right-clicking the app's quick launch bar icon," writes the Windows Club site -- adding that Mac users can use similar functionality when opening a web browser from the MacOS dock.

But now Google Chrome and Microsoft Edge are working on similar "App Shortcuts" that allow users to do things like send email or composing tweets directly from the Windows 10 taskbar or macOS dock. Slashdot reader techtsp shares their report: Right now, Chromium does not allow users to start a key task within a progressive web app through the Windows 10 taskbar. This is exactly what Chromium-based web browsers are now trying to change.

This feature will enable web developers to add support in Chromium for shortcuts defined in a Web App Manifest. As a result, Chromium progressive web apps can offer App shortcuts for their quick launch bar icon much like native apps.

The App shortcuts feature is currently in development on Microsoft Edge. Meanwhile, Google Chrome 85 is in the Dev channel.

Desktops (Apple)

Apple Plans To Announce Move To Its Own Mac Chips at WWDC (bloomberg.com) 217

Apple is preparing to announce a shift to its own main processors in Mac computers, replacing chips from Intel, as early as this month at its annual developer conference, Bloomberg reported Tuesday, citing people familiar with the plans. From the report: The company is holding WWDC the week of June 22. Unveiling the initiative, codenamed Kalamata, at the event would give outside developers time to adjust before new Macs roll out in 2021, the people said. Since the hardware transition is still months away, the timing of the announcement could change, they added, while asking not to be identified discussing private plans. The new processors will be based on the same technology used in Apple-designed iPhone and iPad chips. However, future Macs will still run the macOS operating system rather than the iOS software on mobile devices from the company. Bloomberg News reported on Apple's effort to move away from Intel earlier this year, and in 2018.
Linux

Bryan Lunduke Explains Why Linux Sucks in 2020 (youtu.be) 222

Roblimo once called it "a tradition, not just a speech" -- Bryan Lunduke's annual "Linux Sucks" presentations at various Linux conferences. But before you get too upset, in his 2014 interview with Slashdot Lunduke admitted "I love Linux, I have made my whole life around Linux. I work for Linux companies. I write for Linux magazines, but it really blows..."

This year he's releasing a special YouTube version of Linux Sucks 2020, the first time Lunduke has attempted the talk without a live audience, "And it feels really wicked weird." But he's still trying to get a rise out of his audience. "Follow me on this into Journey Into Graphs and Numbers Land," Lunduke says playfully, pulling up one of his 160 x 90 pixel slides showing current market share for Windows, Mac, and then Linux "You might notice that some platforms have a higher market share than Linux does," he says with a laugh, describing one slide showing Linux as "scooping up the bottom of the barrel at 1.6%..."

"But here's the thing. These numbers have been either consistent, or for Linux, slowly dropping." And then he puts up a graph showing the number of searches for Linux. "If you look back at 2004 -- the year 2004, 16 years ago -- that was the high point in interest in searching for the word Linux (or Linux plus other things). 2006 it was about half that -- so about two years later it had dropped down to about half. Here in 2020 it is so low, not only does it not fill up the first bar of pixels there, it's like only three pixels in. That doesn't happen -- that sort of decline does not happen -- unless the platform sucks. That's just the truth of the matter. That's just how it goes, right?"

And there's also some very specific reasons why Lunduke thinks Linux sucks:
Firefox

Firefox 77 Arrives With Faster JavaScript Debugging and Optional Permissions (venturebeat.com) 30

An anonymous reader writes: Mozilla today launched Firefox 77 for Windows, Mac, and Linux. Firefox 77 includes faster JavaScript debugging, optional permissions for extensions, and Pocket recommendations in the U.K. You can download Firefox 77 for desktop now from Firefox.com, and all existing users should be able to upgrade to it automatically. According to Mozilla, Firefox has about 250 million active users, making it a major platform for web developers to consider. [...] Other than Pocket recommendations arriving in the U.K. (they've been in Canada, Germany, and the U.S. since April 2018), this is primarily a developer release. Firefox's Debugger is now better at handling large web apps with all their bundling, live reloading, and dependencies. Mozilla is promising performance improvements that speed up pausing and stepping, as well as cutting down on memory usage over time. Source maps should also see performance boosts -- some inline source maps load 10 times faster -- and improved reliability for many configurations. The debugger will now also respect the currently selected stack when stepping, which is useful when you've stepped into a function call or paused in a library method further down in the stack.
IOS

Why You Shouldn't Make a Habit of Force-Quitting iOS Apps or Restarting iOS Devices (tidbits.com) 90

Adam Engst, writing for TidBITS: Because force-quitting apps and restarting or shutting down devices are necessary only to fix unanticipated problems, there are two notable downsides to engaging in such behavior as a matter of habit: reduced battery life and wasted time. Why would these behaviors reduce battery life? Remember, iOS is a modern operating system that's built on top of Apple's proprietary hardware. Apple has put a great deal of effort into ensuring that iOS knows the best ways to manage the limited hardware resources within your iPhone or iPad. No one, possibly short of an iOS systems engineer armed with Apple's internal diagnostic and debugging tools, would be able to outguess iOS itself on issues like memory usage, power draw, and CPU throttling.

When you invoke the App Switcher in iOS, you can swipe right to see all the apps you've used, possibly since you got your device. (The very first app in my iPhone 11 Pro's App Switcher is Apple's Tips, which I think came up automatically when I turned the iPhone on last year and hasn't been touched since. It's difficult to count apps in the App Switcher, but I probably have at least a hundred in there.) As the number of apps in the App Switcher should indicate, those apps are not necessarily running -- they merely have run at some point in the past. They're much more like the contents of the Mac's Apple > Recent Items menu. In normal usage, iOS devotes the lion's share of CPU and memory resources to the app that you're using. That's sensible -- the performance of that app is paramount. However, the next few apps in the App Switcher may also be consuming some CPU and memory resources. That's because iOS correctly assumes that you're most likely to return to them, and it wants to give you the best experience when you do. The screen shouldn't have to redraw multiple times, Internet-loaded content shouldn't have to update, and so on. [...]

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