MacRumors

Feral Interactive today announced that epic historical strategy game Thrones of Britannia will be released for macOS "shortly after" the upcoming Windows release on April 19.

Originally developed by Creative Assembly, the game is the first in the new Total War Saga series of standalone titles inspired by great turning points in history.

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Thrones of Britannia is set in the British Isles in 878 AD, as Anglo-Saxons, Gaelic clans and Viking settlers vie for supremacy. Players will command one of ten factions, each with a unique branching narrative, and make decisions that reshape history in unexpected ways.

TWToB Campaign Mide StartPos

Combining huge real-time battles with engrossing turn-based strategy, Thrones of Britannia challenges players to build and defend a kingdom. Players will forge alliances, manage settlements, raise armies and embark on a campaign of conquest from the snowbound highlands of Gaelic Scotland to the green fields of Anglo-Saxon Kent.

Focusing on a specific historical flashpoint, Thrones diverges from typical Total War fare, and is expected to feature some changes to the series' standard game mechanics, including variations in building construction and military training to better reflect geographical differences.

thrones of britannia
No specific release date or system requirements are available yet, but today's announcement is a good indicator that Feral is aiming to keep pace with new cross-platform releases. Thrones of Britannia can be pre-ordered now for $35.99/£26.99 from the Feral Store or Steam.

Tag: Feral

Apple's APFS file system included in macOS High Sierra suffers from a disk image vulnerability that in certain circumstances can lead to data loss, according to the creator of Carbon Copy Cloner.

In a blog post last Thursday, software developer Mike Bombich explained that he had uncovered the data writing flaw in the Apple File System, or APFS, through his regular work with "sparse" disk images.

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For those who aren't familiar with the term, a sparse disk image is basically a file that macOS mounts on the desktop and treats as if it was a physically attached drive with a classic disk volume structure. The flexibility of sparse disk images means they are commonly used in the course of performing backup and disk cloning operations, hence Bombich's extensive experience with them.

Earlier this week I noticed that an APFS-formatted sparsebundle disk image volume showed ample free space, despite that the underlying disk was completely full. Curious, I copied a video file to the disk image volume to see what would happen. The whole file copied without error! I opened the file, verified that the video played back start to finish, checksummed the file – as far as I could tell, the file was intact and whole on the disk image. When I unmounted and remounted the disk image, however, the video was corrupted. If you've ever lost data, you know the kick-in-the-gut feeling that would have ensued. Thankfully, I was just running some tests and the file that disappeared was just test data.

Two related problems are identified by Bombich, above. The first is that the free space on the APFS-formatted sparse disk image doesn't update as it should when the free space on the underlying physical host disk is reduced. The second problem is the lack of error reports when write requests fail to dynamically grow the disk image, resulting in data being "written" into a void. Bombich tracks both bugs back to macOS's background "diskimages-helper" application service, which he has since reported to Apple.

Bombich's video demonstrating the APFS bug

Every installation of High Sierra on Macs with all-flash storage converts the existing file system to APFS, which is optimized for modern storage systems like solid-state drives. However, as Bombich notes, ordinary APFS volumes like SSD startup disks are not affected by the problem described above, so the vast majority of users won't be affected by it – the flaw is most applicable when making backups to network volumes. Bombich says Carbon Copy Cloner will not support AFPS-formatted sparse disk images until Apple resolves the issue.

The APFS flaw follows the discovery of another bug in Apple's operating systems that received extensive coverage last week. That bug is induced by sending a specific character in the Indian language Telugu, which causes certain apps on iPhones, iPads, and Macs to freeze up and become unresponsive. The Telugu character bug has already been fixed in Apple's upcoming iOS 11.3 and macOS 10.13.4 software updates.

Tag: APFS
Related Forum: macOS High Sierra

Apple this afternoon shared a new HomePod tutorial video on its Apple Support YouTube channel, which is designed to help new HomePod users get the most out of their new speakers.

The three minute video covers various Siri commands for accessing music, podcasts, news, and personal requests, using the iPhone as a HomePod remote, using the HomePod as a speakerphone, controlling HomeKit devices, and more.


As a warning, this video does include "Hey Siri" commands that have the potential to activate your own HomePod when you watch it, so you might want to watch with headphones.

In the description of the video, Apple links to multiple HomePod support documents, which are useful for HomePod owners who are still learning the ins and outs of the HomePod. These documents cover topics like using the Home app, using VoiceOver, listening to Podcasts, AirPlaying audio, and more.

This is the fourth HomePod tutorial video Apple has shared to introduce users to the new device. Last week, when the HomePod was released, Apple shared three other short videos on using Siri to Play Music, using the HomePod's touch controls, and adjusting the HomePod's settings.

All of the videos have been uploaded to Apple's YouTube support channel, which was introduced back in November. This YouTube channel is where Apple shares tutorial videos that are designed to provide users with tips on using their iPhones, iPads, Macs, and other Apple devices.

At MacRumors, we've also shared several how tos and guides for accessing and using all of the HomePod's different features, which can be found in the how to section of our HomePod roundup.

Related Roundup: HomePod
Buyer's Guide: HomePod (Neutral)

Twitter today announced that it plans to stop supporting the Twitter for Mac app in order to focus its attention on a "great Twitter experience that's consistent across all platforms.

Starting today, the Twitter for Mac app is no longer available for download, and in 30 days, Twitter plans to stop supporting it all together.

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Twitter says to get a "full Twitter experience on Mac," customers should visit Twitter on the web.


Twitter for Mac has never never received a lot of attention from Twitter. In 2015, the company announced plans to refocus its efforts on building new features into its Mac app after providing only sporadic updates over the last several years, but even after adding new features, the app was largely unpopular with Twitter users, earning only 1 and a half stars out of five in the App Store.


In recent months, Twitter has also been streamlining its apps. The discontinuation of the official Mac app follows Twitter's decision to remove the Twitter for Apple Watch app last September.

Twitter for Mac users who are looking for a desktop app experience rather than a web interface can use a third-party app such as Tweetbot or Twitterrific.

Apple's native Camera app has plenty of tools for helping you get the right shot, but some are more hidden than others. The camera level is the perfect example of a really handy tool that many users don't even know exists, mainly because it's part of a feature that's turned off by default.

If you tend to take pictures of things when standing directly over your subject, like a meal on a table or an ornament on the ground, then you'll want to use the camera level, as it helps you capture a balanced shot without having to use a tripod arm or mount. It's also useful for taking a shot of something directly above you, like an object on the ceiling or in the sky.


Here's how to enable and use it on iOS 11 and later.

How to Enable the Camera Level on iPhone and iPad

The camera level tool used to be part of the Grid overlay, but Apple has separated out the function in recent versions of iOS, and it now has its own switch.

  1. Open the Settings app on your iOS device.

  2. Scroll down the list and tap Camera.

  3. In the "Composition" section, toggle on the switch next to Level.

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How to Use the Camera Level on iPhone and iPad

  1. Open the Camera app on your iOS device.

  2. Set the capture mode to Photo, Portrait, Square, or Time Lapse, using the sliding menu above the shutter button.

  3. Point the camera straight down above your subject (or straight up if the subject/scene you want to capture is above you).

  4. Line up the floating crosshair with the fixed crosshair in the center of the screen by adjusting the angle of your phone's camera. The crosshairs will both glow yellow when in perfect alignment.

  5. Tap the shutter button to capture the shot.

camera lens tool how to

The aligned crosshairs turn yellow (right), indicating the lens is parallel with the ground.

The level tool also comes in handy when scanning documents on a desk with your phone's camera, but iOS now offers a dedicated scanning feature in the Notes app, so you'll probably want to use that instead.

For this week's giveaway, we've teamed up with Popcord to offer MacRumors readers a chance to win a Popcord Lightning cable, which is a portable cable that's designed to fit right on your keyring so it's always with you for charging emergencies.

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The Popcord, which started out as a Kickstarter project, features a Lightning connector attached to a thick silicone body that loops over to fit into an aluminum cover that also doubles as a USB-A port. The resulting Lightning cable loop is compact and fits onto a keyring, belt loop, bag hook, or any similar accessory.

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When you need to charge an iOS device, you can pull the Lightning connector out of the cover, plug it into an iOS device, and plug the other end into any USB-A port on a MacBook or charging adapter. It's a simple solution for when you need a Lightning cable in a pinch. Folded up, Popcord is about two and a half inches long, and extended, it measures in at almost five inches.

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Priced at £29.00 or $40 (shipping included), Popcord is a bit expensive in a market crowded with similar keychain cable solutions, but it is MFi (Made for iPhone) certified, longer than most keychain solutions, and made from a thick, durable rubber that's also flexible. The Popcord comes in several colors, including red, green, white, and black.

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We have 15 Popcords to give away to MacRumors readers. To enter to win, use the Rafflecopter widget below and enter an email address. Email addresses will be used solely for contact purposes to reach the winners and send the prizes. You can earn additional entries by subscribing to our weekly newsletter, subscribing to our YouTube channel, following us on Twitter, or visiting the MacRumors Facebook page.

Due to the complexities of international laws regarding giveaways, only U.S. residents who are 18 years or older and Canadian residents (excluding Quebec) who have reached the age of majority in their province or territory are eligible to enter. To offer feedback or get more information on the giveaway restrictions, please refer to our Site Feedback section, as that is where discussion of the rules will be redirected.

The contest will run from today (February 16) at 11:00 a.m. Pacific Time through 11:00 a.m. Pacific Time on February 23. The winners will be chosen randomly on February 23 and will be contacted by email. The winners will have 48 hours to respond and provide a shipping address before new winners are chosen.

Apple has yet to announce dates for the 2018 edition of its annual Worldwide Developers Conference, but there's evidence to suggest the event may take place between Monday, June 4 and Friday, June 8 at the McEnery Convention Center in San Jose, California, the same venue where WWDC 2017 was hosted.

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First, we've heard from a reliable source who says WWDC will in fact return to the McEnery Convention Center for the second consecutive year, after having been hosted at the Moscone Center in San Francisco between 2003 and 2016.

Next, we've discovered that the McEnery Convention Center is already booked with other events during the second, third, and fourth weeks of this June, leaving the first full week of the month as the only available window for WWDC 2018, barring the rare possibility that Apple shares the space with other events simultaneously.

june 2018 san jose mcenery calendar
- June 4-8: WWDC 2018 (?)
- June 11-14: O'Reilly Velocity Conference
- June 17-21: DataWorks Summit and Hadoop Summit
- June 26-28: Sensors Expo & Conference

WWDC has been a June affair since the 2000s, and it generally falls within the first half of the month, so June 4-8 is a very real possibility. We haven't confirmed the dates with Apple, however, so it might be a good idea to wait for the company to officially announce WWDC 2018 details before booking accommodations.

Apple revealed the dates for WWDC 2017 with a press release exactly one year ago today, which was a lot earlier than usual, likely because of the change in venue. Last year excluded, the announcement has generally been in April.

WWDC is where Apple unveils the latest versions of its software platforms, which should include iOS 12, macOS 10.14, and new versions of tvOS and watchOS this year. The opening keynote has sometimes included other big hardware and services announcements, such as iCloud in 2011, the first MacBook Pro with a Retina display in 2012, the current Mac Pro in 2013, and new iPad Pros in 2017.

WWDC 2017 hosted around 5,000 developers and 1,000 engineers. Given the San Jose Convention Center's closer proximity to Apple's headquarters in nearby Cupertino, more Apple engineers are able to attend since they don't need to take an entire day or week off of work to commute to San Francisco.

Tickets will likely cost around $1,599 and be distributed randomly through a lottery. Those interested in attending should make sure they are enrolled in the Apple Developer Program prior to Apple's official WWDC 2018 announcement to ensure eligibility, as this has been a requirement in years past.

Apple simply doesn't have enough room for everyone to attend WWDC, but it will likely provide a live stream of the opening keynote and share videos of developer sessions on its WWDC website, and through the WWDC app for iPhone, iPad, and Apple TV. MacRumors will also provide coverage of the event.

In addition to WWDC, a variety of other developer events should take place throughout the same week in San Jose, such as AltConf and Layers.

Apple has added a new "Close Your Rings" page to its website that highlights how the Activity app works on Apple Watch.

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The page details how Apple Watch users can close the Move ring by hitting their personal goal of active calories burned, close the Exercise ring by completing at least 30 minutes of activity, and close the Stand ring by getting up and moving around for at least one minute during 12 different hours in the day.

Three rings: Move, Exercise, Stand. One goal: Close them every day. It's such a simple and fun way to live a healthier day that you'll want to do it all the time. That's the idea behind the Activity app on Apple Watch.

Apple also provides tips about how to use and customize certain fitness-related features of the Apple Watch, and highlights Achievements and Monthly Challenges that can be earned by closing the rings in the Activity app.

activity achievements
While the page doesn't provide any brand new information, it should be useful for people who are considering purchasing the Apple Watch. Apple has been highlighting individual features on its website more often lately, including a new page that promotes augmented reality use cases powered by its ARKit platform.

Related Roundup: Apple Watch 11
Buyer's Guide: Apple Watch (Buy Now)

Apple this week has begun selling an updated version of Belkin's InvisiGlass Ultra screen protector for iPhone X on its website and at its retail stores, nearly two months after the original was recalled due to quality issues.

belkin screen protectors iphone x
Belkin's product page states that the screen protector is now 0.29mm thick, compared to 0.21mm for the original InvisiGlass Ultra. As such, the new version will hopefully prove to be more durable, after dozens of customers complained about the first iteration cracking way too easily during normal day-to-day usage.

Belkin halted sales of the original InvisiGlass Ultra in late December due to a wave of negative feedback, including several one-star customer reviews. At the time, a company spokesperson told MacRumors that it considers "product quality and consumer feedback" to be of "paramount importance."

"We have been constantly testing this product since we released the first generation of it timed to iPhone X availability and things have evolved since you and I last spoke," a Belkin spokesperson informed MacRumors. "We identified some improvements to be made in the next generation of this product."

Apple and Belkin appear to have been providing refunds to customers who purchased the original InvisiGlass Ultra and found it to be defective, so we recommend contacting the companies if your screen protector easily cracked.

The new InvisiGlass Ultra remains $39.95 from Apple. The updated screen protector is still listed as "coming soon" on Belkin's website.

(Thanks, Christian!)

Tag: Belkin
Related Forum: iPhone

iDevices today announced the launch of the latest product in its smart home lineup, the iDevices Instant Switch. The Instant Switch is a simple wireless wall switch that's designed to attach to a surface using adhesive, so there's no tricky installation required.

The Instant Switch, which was first announced at CES 2017, is designed to work with existing iDevices HomeKit products using a Bluetooth connection, providing an additional method of control. According to iDevices, the Instant Switch can be paired to a hard-wired iDevices Wall or Dimmer Switch to create a three or four-way control configuration, for example.

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You can attach the Instant Switch to a wall or another surface using a 3M Command Strip, and it can be placed anywhere in the home. iDevices recommends using it in hard-to-reach locations, because no drilling or rewiring is required. A built-in user-replaceable battery is included, so power isn't needed.

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If you don't want to use adhesive, the Instant Switch can also be fitted to any standard rocker faceplate because it's been designed to mimic a permanently installed light switch.

The new iDevices Instant Switch can be purchased from the iDevices website or Amazon.com for $34.95 starting today.

Google has updated its iOS Maps app with three new quick-access options that Android users have had access to for over a year now. The new tabs sit across the bottom of the home screen and are called Explore, Driving, and Transit.

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Swiping up on the shortcuts reveals further details. For example, in Explore users can find a description of the local area, dining choices, and options to search for gas stations, ATMs, convenience stores, drug stores, and other amenities.

The driving tab provides a traffic summary for the area, including information on possible delays that might add time onto a commute. This tab will also include current ETAs for the user's home and work addresses if they are saved in the app's settings. Finally, the transit tab offers estimated bus and train schedules at stations in the vicinity.

Google Maps can be downloaded from the App Store for free. [Direct Link]

Danish acquirer Clearhaus today announced support for Apple Pay, bringing Apple's mobile payment platform to over 5,000 Nordic online merchants who use the e-commerce payment institution.

In October 2017, Apple Pay was introduced to Sweden, Denmark, and Finland, where top Nordic banks like Nordea, Jyske Bank, Edenred, N26, and ST1 quickly adopted the digital wallet system, allowing physical stores across the region to accept contactless payments with iOS devices.

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Online payment gateway solutions and acquirers like Clearhaus, which has 20 percent of the market share in Denmark, have since been following suit.

"The emergence of mobile-friendly payment technology like Apple Pay proves that consumer behavior is changing - and webshops will need to adapt quickly. It's an easy, secure payment method, with the fastest checkout in the market today. That's why we have cooperated with our partner, QuickPay to bring Apple Pay to over 5,000 webshops in the Nordics."

Clearhaus serves 7,500 merchants in 33 countries across Europe with secure payment solutions for accepting Visa and Mastercard online.

Related Roundup: Apple Pay

Shazam, which Apple is in the process of acquiring, was today updated to version 11.7.0, introducing several major new features.

When a song is Shazamed, the result is now displayed with the song's name and an image of the performing artist, rather than the previous cluttered interface with large links to YouTube, Apple Music, and more.

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You can access additional information on a Shazamed song by tapping on the artist's image for details or by using the small bubble buttons displayed at the top and bottom of the app's redesigned track-result menu to get to Apple Music, lyrics, videos, and more.

On this same screen, there's a new one-tap "Add To" button that will automatically add a song to an Apple Music or Spotify playlist.

There's also a new Lyric Syncing feature, which is designed to display a song's lyrics in real time as the music plays in the Shazam app, highlighting each line right as it's sung.

Your Shazams have a new look!

Once you've named that tune, you'll see a brand-new song page with the following features:

- Lyric Syncing: Belt it like you wrote it! With our new lyric-syncing, you'll see a song's lyrics in real time, enabling you to not just sing along to any song you Shazamed but finally master those words.

- Streamlined Results: Now when you Shazam a song, you'll get the results and one big photo of the artist behind it--perfect for focusing on the music you were looking to discover in the first place. For more info, simply tap on the artist photo.

- Everything In Its Right Place: We're excited to introduce an all-new track-result menu that makes it easy to view song lyrics, artist videos, updates and more in a single tap. Or swipe.

- Faster Playlisting: Connected to Apple Music or Spotify? 'Add to' playlist now takes one less tap. Simple!

As MacStories points out, Shazam has continued to receive regular updates since Apple's acquisition of the service was announced, suggesting Apple plans to continue to keep Shazam around as a standalone service for the foreseeable future.

Apple's acquisition of Shazam has not yet been finalized, however, so we could still see changes when the deal is done.

Last week, the European Commission announced that it has accepted requests from Austria, France, Iceland, Italy, Norway, Sweden, and Spain to assess Apple's acquisition of Shazam.

Tag: Shazam

Apple has renewed "Carpool Karaoke: The Series" for a second season, CBS CEO Les Moonves announced this afternoon (via The Hollywood Reporter). Positioned as Apple's second original TV show after "Planet of the Apps," "Carpool Karaoke: The Series" season 1 debuted last August.

"Carpool Karaoke: The Series" is based on the Carpool Karaoke segment made popular by "The Late Late Show With James Corden." Apple's TV show pairs up different celebrities, musicians, athletes, putting them together in a car to sing popular songs.


In season 1, featured celebrity pairings included Will Smith and James Corden; Miley, Noah, Billy Ray and the entire Cyrus family; Shakira and Trevor Noah; Game of Thrones stars Sophie Turner and Maisie Williams; Queen Latifah and Jada Pinkett Smith; John Legend, Alicia Keys and Taraji P. Henson; LeBron James and James Corden; and more.

"Carpool Karaoke: The Series" was developed by Apple as a way to promote its Apple Music service and to offer exclusive entertainment to Apple Music subscribers. The show aired each Tuesday on Apple Music, and past episodes can be viewed by Apple Music subscribers.

It is not yet clear when the second season of "Carpool Karaoke: The Series" might debut, but it could see an August launch much like the first season.

Apple today sent out a notice to developers letting them know that starting in April of 2018, all new apps submitted to the App Store must be built using the iOS 11 SDK, which is included in Xcode 9 or later.

Furthermore, Apple says that all new apps designed for the iPhone, including universal apps, must support the iPhone X's Super Retina display.

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Update your version of Xcode to the latest release of Xcode 9 available on the Mac App Store, which includes the iOS 11 SDK, and build your apps. Starting April 2018, all new iOS apps submitted to the App Store must be built with the iOS 11 SDK. All new apps for iPhone, including universal apps, must support the Super Retina display of iPhone X.

With this requirement, Apple is aiming to encourage developers to adopt key features introduced in iOS 11, like Core ML, ARKit, new camera APIs, expanded SiriKit domains, and more, plus the company is making sure future apps will be fully compatible with the display of the iPhone X.

Apple will, for the time being, allow apps built using earlier SDKs to continue to be updated without switching over to the iOS 11 SDK, but at some point in the future, Apple is likely to require developers to use the iOS 11 SDK for app updates as well.

April 1, 2018 is also when Apple plans to stop accepting updates to watchOS 1 apps. All updates submitted after that date must be built using the watchOS 2 SDK or later, and all newly submitted apps must be built with the watchOS 4 SDK or later.

Apple has confirmed that a fix for a recently discovered bug that causes apps like Messages to crash on iPhone, iPad, and Mac has been included in iOS 11.3, macOS 10.13.4, watchOS 4.3, and tvOS 11.3, updates that are currently being beta tested ahead of a release this spring.

Furthermore, Apple told iMore's Rene Ritchie that the bug will also be addressed in an upcoming iOS update that will be released in the near future, ahead of iOS 11.3, so customers won't need to wait several weeks for a fix. Minor updates for other operating systems will likely come at the same time.

telugu bug
The bug, induced by sending a specific character in the Indian language Telugu, causes certain apps on iPhones, iPads, and Macs to freeze up and become unresponsive. Messages, Safari, WhatsApp, Facebook Messenger, and other apps that accept text input are all affected.

When the character is sent in an iMessage, for example, it can freeze up the entire Messages app on all of a person's Mac and iOS devices. The Messages app will then refuse to function properly until the offending character is removed by deleting the conversation with the person who sent it.

In some situations, if the character is viewed through an iOS notification, it can cause the entire device to crash, resulting in a re-spring or worse.

Apple users who have received a message with the character will, as mentioned above, need to delete the Messages conversation with the person who sent the character. Alternatively, installing the iOS 11.3 or macOS 10.13.4 betas will fix the problem.

Related Forums: iOS 11, macOS High Sierra

Following news that the HomePod leaves white rings on some wood surfaces treated with oil or wax, Pad & Quill has designed and debuted new Leather Coasters that are meant to be used with the HomePod.

Available in two colors, Whiskey and Chestnut, the 4-inch HomePod Coasters are made with full-grain leather and offer a soft leather backing.

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Pad & Quill's new coasters will prevent the rings that occur on some wood furniture due to a chemical reaction between the wood and the silicone used for the vibration-dampening base of the HomePod.

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The coasters will also work with other speakers that include similar silicone bases and also leave white marks on surfaces, such as the Sonos One, but the coaster's size and shape were designed with the HomePod in mind.

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The new Leather HomePod Coasters can be purchased from the Pad & Quill website starting today for $19.95. Orders will begin shipping out next week.

Note: MacRumors is an affiliate partner with Pad & Quill and may earn commissions on purchases made through links in this article.

Related Roundup: HomePod
Buyer's Guide: HomePod (Neutral)

The HomePod's silicone base can leave white rings on some wood surfaces that have an oil or wax finish, a problem that Apple yesterday said was "not unusual." As it turns out, Apple wasn't incorrect -- the Sonos One, a competing smart speaker, also leaves white rings on furniture.

Tom's Guide reviewer Mike Prospero read about the HomePod causing rings on furniture yesterday and went to check his wood cabinet, where he did indeed discover a ring caused by the HomePod. But next to it, he found smaller square shaped marks, which had been caused by the Sonos One located near the HomePod.

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Image via Tom's Guide

When I got home, I saw a large white ring, a telltale indication that the HomePod's silicone base had messed up the finish. But, as I was inspecting the damage, I noticed a series of smaller white marks near where the HomePod was sitting.

A closer inspection revealed that the Sonos One speaker, which also has small silicone feet, had made these marks on my cabinet. Looking around the top of the cabinet, I noticed a bunch of little white marks, all left from the Sonos Ones as I moved them around. So, they will damage your wood furniture, too. We're awaiting comment from Sonos.

Like the HomePod, the Sonos One has a silicone base with four small feet. It doesn't make a ring as prominent as the ring caused by the HomePod, but it does appear to cause the same marks.

White rings became a topic of discussion yesterday morning after independent reviews from Pocket-lint and Wirecutter pointed out the marks the HomePod left on oiled or waxed furniture. After the issue received significant media attention, Apple published a "Cleaning and taking care of HomePod" support document that warned about the potential for marks on some wooden surfaces.

Apple said it is not unusual silicone bases to leave mild marks, and that they should go away with time or with some light polishing. Tom's Guide reviewer Mike Prospero says that the marks do indeed appear to fade with time. From Apple's support document:

HomePod is designed for indoor use only. When using HomePod, make sure to place it on a solid surface. Place the power cord so that it won't be walked on or pinched.

It is not unusual for any speaker with a vibration-dampening silicone base to leave mild marks when placed on some wooden surfaces. The marks can be caused by oils diffusing between the silicone base and the table surface, and will often go away after several days when the speaker is removed from the wooden surface. If not, wiping the surface gently with a soft damp or dry cloth may remove the marks. If marks persist, clean the surface with the furniture manufacturer's recommended cleaning process. If you're concerned about this, we recommend placing your HomePod on a different surface.

It is not clear why Apple did not inform customers about the possibility of white marks on wood, as this is presumably an issue the company had to know about following the HomePod's extended beta test with Apple employees and the years of development that went into the product.

A simple HomePod care support document published ahead of the HomePod's launch, rather than after customers were left to discover the issue on their own would have likely mitigated much of the negative press and frustration from customers.

For those who are concerned about the HomePod damaging their expensive wood furniture, Apple recommends putting the HomePod on a different surface to avoid problems all together.

Related Roundup: HomePod
Buyer's Guide: HomePod (Neutral)