Category Archives: Technology

Technology

Get rid of bloat and Ads on Line and WhatsApp

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Recently I found out how to get rid of Ads on both WhatsApp and Line. The concept is same for both, pretend to be from a country where the service is not popular.

Get Rid of Ads on WhatsApp

Ads on WhatsApp while subtle, are still irritating for me. The ads are mostly in form of “channels” that some losers pay WhatsApp to promote. Since WhatsApp is very popular in India, using an Indian number to register WhatsApp causes several distasteful channels to be recommended.

WhatsApp channel promotions
WhatsApp channel promotions

The solution was simple (at least for me), change your WhatsApp account to use a number from a country where WhatsApp is not popular. Voila, ads gone.

WhatsApp channel promotionsWhatsApp without Channel recommendations
WhatsApp with an Indian number vs Thai number

Caveat: If the other country doesn’t have Meta AI, you won’t be able to use it in WhatsApp anymore.

Bonus: No more spam from Indian vendors and services.

Now, I understand it may not be possible for everyone to have a number from another country and also, the WhatsApp ads are not so intrusive.

Get rid of bloat and Ads on Line

Line is so much worse when it comes to Ads, bloat and intrusiveness. Just look at how bloated the app is, trying hard to be like WeChat and Facebook.

Line chat list with ads
Line chat list with ads
Line Voom
Voom
Line Today
Line Today
Line contact list with ads
Line contact list with ads

There are Ads on almost every page, even on top of the chat list. On top of that, it comes bundled with unnecessary (for me) social networking features. So I tried the opposite trick with Line.

I deleted my Line account which was using a Thai number and registered again with my country selected as India. Voila! A much cleaner app!

Line Chat list without ads
Line Chat list without ads
Line contact list without ads
Line contact list without ads

The best part is, you don’t need a phone number of the other country at all. You can simply sign in using your Apple or Google ID and be done.

Caveat: You cannot search for other Line users using their phone number, only using their Line ID.

Technology

Apple iPhone 16 Pro

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I had been using the Apple iPhone 14 Pro for more than 2 years. But I started yearning to upgrade it as soon as iPhone 16 Pro was announced. I did try to convince myself to wait for another year, but last month, I gave up and bought the iPhone 16 Pro.

The iPhone 16 Pro is delightful to hold without a case
The iPhone 16 Pro is a delight to hold without a case

My views on the iPhone 16 Pro

  1. The battery life is much better than the 14 Pro. The phone, now, easily lasts a full day without a top-up. Although I do top-up during the day most days.
  2. Charging is much faster (Including wireless) and the phone emits less heat while charging.
  3. The cameras are a modest improvement. I don’t see a big difference in picture quality most of the times, but for low-light photos, I do see an improvement. Portrait photos are also faster now, with motion frozen. The 5x zoom is useful, but I, personally haven’t found a use-case for it till now. Disappointed that portrait mode photos are still 12MP.
  4. The phone feels much cooler while using. It didn’t overheat once during initial setup, which was more or less guaranteed on the 14 Pro.
  5. It is such a relief to remove the last lightning port personal device from my life and get rid of all remaining lightning cables.
  6. The display is slightly bigger (Although with similar specs) and the bezels slightly smaller, but I don’t notice any of that because I switched from using my phone with a case/screen guard, to using without it, which made a bigger difference.
  7. I can finally fulfil my desire to use my phone without a case. Overall, the phone is extremely pleasurable to hold naked.
    • The Titanium sides are not glossy like the 14 Pro, almost matte. Looks beautiful and elegant. Doesn’t slip when holding.
    • The edges are not as sharp as on the 14 Pro.
    • There’s a pronounced slope when the phone is resting on its back, because of the huge camera island. And since the island is on one side, not in the centre, it is impossible to use the phone when it is lying on a flat surface, as it flops around.
iPhone 16 Pro slope because of camera bump
iPhone 16 Pro slope because of camera bump
iPhone 16 Pro Titanium White
iPhone 16 Pro Titanium White

Lessons learnt when selling the old Phone

  1. Going to great lengths to keep the phone in pristine condition without a single scratch is not worth it. At the end of the day, it hardly earns any extra money while selling it.
  2. Things like cases, screen guards are all dead weight.
  3. Paying to replace the battery is useless because no one pays extra for battery health.
Mobile, Technology

My List of Mobile Handsets (updated)

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I’ll go back in time now and make a list of all the mobile handsets I have owned till date. You may notice that the list is quite long, with it being especially dense in the first few years.

The iPhone X still holds the record of the longest used mobile handset by me (almost 3 years).

YearPhoneComments
2003Reliance LG RD2030 (CDMA)My first phone, my father had to pull many strings to get me this.
2004Nokia 3530My first colour phone. I miss the paragliding game.
2004Samsung C100Had a hidden temperature sensor and a notification LED supporting customisable colours.
2004Samsung X100Slightly better than the above.
2004Nokia 1100My first phone with a torch.
2005Nokia 2112My last CDMA phone.
2005Nokia N-Gage QDDidn’t have stereo audio for music playback.
2005Nokia 3510iPurchased Second hand.
2005O2 Xphone IIOne of the best phones I had.
2005Motorola C350When the above got stolen. I think I got it for ~₹1000, second hand. Shitty.
2006Nokia 6100Second Hand.
2006Nokia E50One of the best phones I had. It was the sleekest Symbian ever. I still use the Text Tone “Flurry” as my wife’s message tone.
2006Sony Ericsson J100iShitty.
2007Nokia N73 MEIt was thick, but had a good (back then) camera.
2007Nokia E51Back to the thinner E Series.
2007LG KS20One of the worst phones I had. It was unrefined and shitty.
2008Nokia E51Went back to E51.
2009Nokia E52Good phone, died on the flight to Palo Alto. I spent an entire weekend in San Francisco and many days in Gurgaon trying to get it repaired, but failed.
2010iPhone 3GGot this as a temporary phone in Palo Alto, later gifted to mother. Used only a week.
2010Nokia E63Mooched this one off my father.
2011Nokia E7-00First phone I ever pre-booked, and got immediately after returning from Turkey. My first AMOLED phone.
2012Nokia Lumia 900Was obsoleted by Microsoft within a few months of launch. Got it from SGBest.
2013Nokia Lumia 720Got it from MGF Metropolitan Mall
2013Nokia Lumia 925The Lumia 720 didn’t feel premium enough, so.
2014Nokia Lumia 920The Lumia 925 didn’t have wireless charging, so.
2014Nokia Lumia 830Slightly bigger screen, but LCD.
2015Microsoft Lumia 950XLLumia Flagship. Also, a big mistake.
2017Apple iPhone 7 PlusFirst legit iPhone.
2018Apple iPhone XGift from a fiend.
2019Apple iPhone XSGot it for dual SIM during travel, gifted iPhone X to wife.
2020Apple iPhone XSwapped Xs with X with wife, as I switched jobs and didn’t need to travel anymore.
2020Apple iPhone 12 ProFirst phone I bought in a long time with money I already had
2022Apple iPhone 14 ProFirst phone I bought with a 120Hz display
2024Apple iPhone 16 ProCurrent Phone
List of Mobile Handsets

As you can see, my mobile handsets have gone through different eras:

2003-2005 : Feature Phone era. I generally bought any handset I liked.
2005-2011 : Symbian Era. I mostly had Symbian phones with some other platforms sprinkled in between.
2012-2015 : Lumia Era. I purely had Windows Phones.
2017-Present : Apple Era.

Let’s see what the future brings.

Technology

Apple Watch Series 10

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I have been using the Apple Watch Series 7 for almost 3 years without any complaints, nor had a yearning to upgrade. However, the battery health went down gradually over the years. Eventually, at 79% health, I couldn’t even complete a 10k with it playing music while connected to LTE. Fighting back the urge to get the Series 9 or Ultra 2, I decided to wait for the Apple Watch Series 10 and buy that. Strangely in Thailand, it was launched much later, even after India.

Since I experienced a financial windfall, I decided to move up to the Titanium variant.

Apple Watch Series 10 Natural Titanium with Natural Milanese Loop
Apple Watch Series 10 Natural Titanium with Natural Milanese Loop
Apple Watch Series 10 showing silver colour
Apple Watch Series 10 showing silver colour

My views on the watch

  1. Titanium is absolutely gorgeous. As you can see in the photos above, the watch has a golden hue in warm lighting and silver in cool lighting. At some angles, looks jet black, too.
  2. The titanium chassis is much lighter than the Stainless-Steel variant (Which I had the Series 4 in). I found it hardly any heavier than Aluminium variant.
  3. I had planned to use the Milanese Loop only when going out and my old Braided Solo Loop all other times for comfort. However, I found the Milanese loop much more comfortable than I had assumed, so I almost always wear that.
  4. Wrist temperature monitoring is good to have, but I wasn’t yearning for it.
  5. I can see the difference in screen size, but don’t find it revolutionary. I thought it would look comically big on my wrist, but thankfully, doesn’t. The bigger bezels are also hardly noticeable.
  6. I don’t find the watch any faster or any better in any other way.
  7. I don’t see any changes or improvements to exercise tracking (Except the better battery life, of course).
  8. I can’t remember to use the pinch gestures to decline calls etc.
Apple Watch Series 10 on the dawg's wrist
Apple Watch Series 10 on the dawg’s wrist

Overall, I can say that the upgrade from Aluminium to Titanium is a bigger upgrade, compared to technical improvements (From Series 7 to Series 10) which are nice-to-have but not revolutionary.

Technology

Retro Computing: Windows 98 SE/Setup

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Continuing my adventures with UTM SE, the first thing I did was run Windows 98 SE Setup.

Windows 98 SE was the first OS on my first computer, so this was a huge trip in nostalgia. I made an ISO from my old and scratched Windows 98 SE disk, mounted it in UTM SE and let it boot.

Windows 98 SE, Start Computer with CD ROM Support
Windows 98 SE, Start Computer with CD ROM Support

The boot screen sent me into throes of nostalgia. So did the next steps.

Windows 98 Setup, Formatting Hard Disk
Windows 98 Setup, Formatting Hard Disk
Microsoft ScanDisk, Checking File System
Microsoft ScanDisk, Checking File System

I could feel myself going crazy when the setup GUI came up.

Windows 98 Setup, To begin Setup, click Continue
Windows 98 Setup, To begin Setup, click Continue

I got stuck for a while here because I couldn’t make my keyboard and mouse work. Eventually, I figured out that I needed to disable support for USB peripherals and I could continue.

Setup is preparing the Windows 98 Setup Wizard
Setup is preparing the Windows 98 Setup Wizard
Windows 98 Setup Wizard, Select Directory
Windows 98 Setup Wizard, Select Directory
Welcome to Microsoft Windows 98
Welcome to Microsoft Windows 98
Windows 98 SE Setup, Easier to get Help
Windows 98 SE Setup, Easier to get Help
Windows 98 SE Setup, More Entertaining
Windows 98 SE Setup, More Entertaining

After the first reboot, I was presented with the famous “first time” Windows 98 boot splash screen. Another huge dose of nostalgia.

Microsoft Windows 98, Getting Ready to run Windows for the first time
Microsoft Windows 98, Getting Ready to run Windows for the first time

The second phase of the setup is (was) my favourite. I especially like the part with the beating drums animation.

Windows 98 is initializing its driver database
Windows 98 is initializing its driver database
Windows is now detecting non Plug and Play hardware in your computer
Is Windows now detecting non Plug and Play hardware in my computer?
Windows is now setting up the following items
Windows is now setting up the following items
Updating Shortcuts: Programs
Updating Shortcuts: Programs
Windows 98 Setup, Updating System Settings
Windows 98 Setup, Updating System Settings

Eventually, after an hour and 50% of my iPad’s battery, setup was complete and it booted into Windows.

New Hardware Found, Standard Display Adapter (VGA)
New Hardware Found, Standard Display Adapter (VGA)
New hardware found, Default Monitor
New hardware found, Default Monitor

More to come, soon.

Technology

Retro Computing: UTM SE

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Last week, something unthinkable happened. Apple finally allowed emulation of any and all OS on iOS and iPadOS. The intended purpose is to emulate retro Windows based games, which matches their recent trend of approval of gaming-system emulation apps. However, for me, it restarts a long-time hobby of running retro OSes purely for nostalgia and hobby purposes. This was not possible before because I don’t have a real computer, just an iPad. The first app to take advantage of this change of heart from Apple is UTM SE.

Now, UTM SE has been available on macOS and jailbroken iOS and iPadOS for quite some time, but this is the first time the app is officially available through the App Store.

Overview

The process to configure a new VM is much like most virtualisation apps out there. You use either an existing image or create a new one, select various parameters like RAM, HDD, CPU architecture, cores etc.

UTM SE: New VM
UTM SE: New VM
UTM SE: Mount CD/DVD or Floppy image
UTM SE: Mount CD/DVD or Floppy image
UTM SE: Select Platform, CPU architecture, RAM and CPU Cores
Inside UTM SE: Select Platform, CPU architecture, RAM and CPU Cores
UTM SE: Select HDD Size
UTM SE: Select HDD Size

Your Bluetooth mice/keyboards can be mapped to the guest OS via USB or PS/2 emulation. For older OS (Pre Windows ME) which don’t have out of-box support for USB peripherals, you need to disable USB support for Mouse/Keyboard so that they are emulated as PS/2. Even touch gestures can be used in lieu of a mouse, although the experience is clunky.

UTM SE: Switch between USB or PS/2 for mouse and keyboard
UTM SE: Switch between USB or PS/2 for mouse and keyboard

Another useful feature is that you can map a folder on your iOS/iPadOS filesystem to the guest machine allowing you to transfer files easily.

UTM SE: Select Shared Directory
Select Shared Directory

Also, you can choose to include your VMs in your iCloud backups.

The Bad

Instead of proper virtualisation that is possible on other computing platforms, UTM on iOS and iPadOS uses software emulation, making it very-very slow. Apparently iOS and iPadOS had virtualisation support (only with jailbreak) previously, but they removed it a few years ago.

The other limitation is, iOS and iPadOS don’t allow JIT compilation for apps from the App Store which negatively affects performance further.

For me, the performance is roughly similar to my first Celeron 400Mhz computer. Which, when compared to the 4×3.49Ghz high-performance cores on the Apple M2 means there is an approx 35x performance penalty for emulation. No wonder the “SE’ in UTM stands for “Slow Edition”.

Also, switching to another app causes UTM to suspend the VM after a few minutes. None of this is UTM’s fault, but needless restrictions from Apple to stop iPads from cannibalising Mac sales.

Also, the iPad screen locks after inactivity, which I think is on UTM, because apps (especially games) have been able to keep the screen unlocked through inactivity.

But the good thing is, you can resume from where you left off. Also, you can run multiple windows of UTM itself, even with multiple windows mapping to multiple monitors on the guest.

Battery usage is also extremely high because of the inefficiencies.

Look forward to many (many) posts on this topic.

Rant, Technology

iPad Debacle : 2023 edition

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I couldn’t end 2023 without another iPad debacle. I already went through how I bought an iPad Pro 12.9 and iPad Pro 11 back in 2022. After the 2022 debacle, I ended up without an iPad, but reasonably satisfied. Then 2023 came around and things went wrong.

As part of my New Years’ resolution, I started reading again. The only problem was, English books are very expensive in Thailand. On top of that, English Indian books are very hard to find. To solve this problem, I bought a Kindle. All was good for a few months, till I felt like I wanted to read comic books & magazines. Of course you cannot do that on a kindle. So what does one do?

iPad debacle
NASA Visualization Explorer (iPad app) by NASA Goddard Photo and Video is licensed under CC-BY 2.0

iPad Air (5th Gen) 64Gb

One day while walking through the mall, I saw a good deal on an iPad Air (5th Gen) & bought it. Things were OK for a while, I read both books and magazines on it, no problem. However, the poorly storage space (64Gb) and the 60Hz screen started nagging me. Especially when I switched from using my iPhone to the iPad, it felt really bad. I decided that it won’t do. My daughter’s 4 year old iPad was acting up, so I gave her my Air and started looking around.

iPad Pro 11 (4th Gen) 512Gb

The iPad Pro 11 was seemingly perfect. It addressed the storage and display refresh rate limitations of the Air. Weeks went by, with me oblivious to what’s coming next. And then I made a mistake of checking out iPads at the mall. Once I compared the iPad Pro 11 and iPad Pro 12.9 displays, it was game over for this iPad, too.

I hadn’t done my homework before buying this iPad. If I had, I would know that the iPad Pro 11 had a regular LCD screen which goes up to 600 nits. The iPad Pro 12.9 on the other hand, has a Mini LED display and the difference is mind blowing. The contrast and brightness were incomparable. And once I saw this, I couldn’t go back to the iPad Pro 11. It was outside the return window, so I sold it on Facebook Marketplace at a slight loss. I was lucky I got such a good deal.

iPad Pro 12.9 (6th Gen) 512Gb

The next logical step was to buy the iPad Pro 12.9. I chose to forget what happened last time and bought one from the Apple Store. The good news was, I couldn’t find anything wrong with it. I even went a long way towards getting used to its huge size and weight. Then I saw a deal on Studio 7 and I returned the iPad to Apple (The process took less than 10 mins).

iPad Pro 12.9 (5th Gen) 512Gb

The deal I saw was for an iPad Pro 12.9 (5th Gen) for less than what I paid for the last one. The kicker is, this was a 2Tb model. I couldn’t ever use the 2Tb, but the 1Tb/2Tb models do come with 16Gb RAM, too and appealed to me no end. I ended up saving money with the last transition, but didn’t lose much because the 5th Gen to 6th Gen upgrade was minor at best. I had second thoughts after buying this one, too and even contacted customer care to return it, but eventually slapped myself hard twice and stopped it. But after the holidays came and went and it didn’t even ship, I cancelled the order.

iPad Pro 12.9 (6th Gen) 512Gb

Eventually, I gave up and went back to the Apple Store and bought the same iPad I bought before the last one, but this time in Silver colour.

Analysis

After the dust settled, I tried to think about why this happens to me and why specifically only with iPads. Why did I go through 7 iPads in a span of 10 months? My iPhone is more than a year old and I felt no yearning to upgrade when the iPhone 15 Pro came out. My AirPods Pro lasted 4 years before I had to change them because they died. My Apple Watch is 2 generations old and the last one lasted 4 generations. I have never wanted a Mac or a MacBook. This literally doesn’t happen to me for anything except the iPad.

Eventually, I realised it is because I am looking for a single device to do all of the below

  1. Read books
  2. Read comics, magazines & newspapers
  3. Use as a PC for blogging & budgeting on Buxfer
  4. Making FaceTime calls
  5. Watching TV shows when the TV is occupied or when I am out

The fact is, there’s no one device which fulfils all the above criteria perfectly.

  • The Kindle is good for 1 but not any of the others.
  • The iPad Air and Pro 11 are good for 1 & 4 but not for 2, 3 or 5.
  • The iPad Pro 12.9 is good for 2, 3, 4 & 5, but too big and heavy for 1.
  • A MacBook is good for 3 & 4, but not 1, 2 or 5.

Eventually, I decided to compromise and use a Kindle to read books and an iPad Pro 12.9 to do everything else.

Mobile, Technology

iPhone 14 Pro first impressions

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So I upgraded from my iPhone 12 Pro to an iPhone 14 Pro. Here’re my takeaways after 1 day:

The camera module is huge. There’s a perceptible slope to the phone when lying flat. The phone looks stupid without a case. Like it has sprouted a tumour.

iPhone 12 Pro vs iPhone 14 Pro Camera bump without case
Camera bump without case
iPhone 12 Pro vs iPhone 14 Pro Camera bump with case
Camera bump with case

But the cameras take very nice macro images. Will get creative with this in the days to come.

Orange Macro, iPhone 14 Pro
Orange Macro, iPhone 14 Pro
Fabric Macro, iPhone 14 Pro
Fabric Macro, iPhone 14 Pro

It is and feels heavier than 12 Pro. I am glad I didn’t get the iPhone 14 Pro Max, which I almost did. My little finger is already suffering.

FaceID is noticeably faster.

The dynamic island is cool. Even the parts with the FaceID sensor and the camera are touch sensitive. Hope more apps develop cool features for it.

Dynamic Island, iPhone 14 Pro
Music, Dynamic Island
Dynamic Island, iPhone 14 Pro
Charging, Dynamic Island
Dynamic Island, iPhone 14 Pro
Lock Screen, Dynamic Island

Although, the notch on the older iPhones had become invisible to me, I still can’t un-see the dynamic island. Also, the Dynamic island sits a bit lower on the screen compared to the older notch, so app content starts even lower. This change is just barely perceptible.

Mail app, iPhone 12 ProMail app, iPhone 14 Pro

The always on display is cool. Time will tell how much battery it uses up.

The display is cooler (as in colour temperature). I think my iPhone 12 Pro Display was unnecessarily warm.

The 120Hz display difference is visible, especially during screen animations and when using the 12 Pro.

Will sell the iPhone 12 Pro once my eSIM situation is sorted out, hopefully in March 2023.

Technology

Life Inside Apple’s Walled Garden

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For many years now, I have been a firm believer in having a cohesive, seamless technological experience. I don’t like mixing technologies/products from different ecosystems, as they never work as well. For many years, I had heavily invested in Microsoft’s ecosystem and products. When Windows Mobile croaked, I had to make a decision and I went with Apple. Since then, I have moved almost all of my services to Apple’s ecosystem & am enjoying the comforts of Apple’s Walled Garden.

To lock myself completely in this garden, I also had to move all my family members inside it. Over many years, I was successful in doing so. Below is how life is like, living inside Apple’s Walled Garden:

Apple's Walled Garden
Apple’s Walled Garden, PC: Macstories

What?

FunctionProductComments
Email/
Calendar/
Reminders		iCloud+ Custom domains are supported. Email works very well (on Apple devices). AirDrop is useful for sending larger files.

Calendar supports shared calendars.

Reminders supports shared reminders.
Desktop OSmacOSWorks very well with Apple services. The M1 Macs are very fast and energy efficient.
Mobile/Tablet OSiOS/iPadOS
Photo StorageiCloud+HEIF format used by Apple results in efficient storage of photos and allows lossless editing.
Photo SharingiCloud Shared PhotosWorks very well. I share photos to my family; they can comment/like. Is like a private Social Network.
ProductivityPages/Numbers/Keynotes
Cloud StorageiCloud+I wish they had a tier between 200Gb and 2Tb.
Instant MessagingiMessageVery well refined ; I now use it exclusively & have a lot of fun playing games inside iMessage apps.
Music StreamingApple MusicCurrently unbeatable with the introduction of Spatial & Lossless Audio.
Movies (Buy/Rent)iTunesLarge collection of movies available, especially in 4K HDR.
Maps/NavigationApple MapsNot as good as Google Maps, but at least they don’t track my movements.
Audio/Video CallingFacetimeUnparalleled quality, supports Spatial audio and Memojis.
BrowserSafariVery fast & responsive .
NotesApple NotesFunctional, supports sharing notes with family.
Password ManagementiCloud PasswordsCan detect and alert user to compromised passwords. Also has a TOTP generator.
HealthApple HealthVery intuitive and supports data inputs from a huge range of apps and services.
Home AutomationHomekitLarge number of Homekit devices available on the market. They all work seamlessly without separate apps.
My Walled Garden

It does take a decent amount of money to enter this walled garden, but once you’re in, the recurring costs are not high. Most of their services are decently priced (and can be shared with family) and devices last for years and have a decent resale value.

Gadgets, Rant, Technology

My Worst Purchases-Dyson TP03 Air Purifier

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Continuing with my series, the next entry in the list is Dyson TP03 Air purifier.

Dyson TP03
Dyson TP03

It was the day after Diwali 2019 in Gurgaon. Because we Indians cannot celebrate festivals without polluting at least 1 element of nature, the AQI was 1999. I already had air purifiers (Different makes) in all the bedrooms, but it was getting difficult to breathe so we decided to get one for the living room.

We had had a very good experience with the Xiaomi 2S, so we decided to get another one for the living room. Headed out to Ambience Mall (I miss you so much) and went straight to the Xiaomi store. We had already decided what to buy, so I asked the sales guy to bill one for us. Instead, he laughed at us and said “Stock hi nahi hai to kaha se du”. (We don’t have stock where do I give it from?). Angry at his rudeness, we decided to get the Dyson TP03 (Also known as Dyson Pure Cool Link) instead. Surely, compared to the Xiaomi (₹7999) the Dyson (₹29999) would surely be much better? How wrong we were.

Here’re my views after using it for >1 year

+ Is Stylish, looks nice in the living room
+ Setup is easy and app is very nice
+ App can show historical AQI data
– Can only show AQI on a scale from 1-10 (Both the tiny display & the app). No other details
– Is noisy
– Doesn’t really purify very well or fast. On most days, it couldn’t keep up with outside air leaking in
– Since it throws air straight at the user rather than up in the air, in winters it becomes uncomfortable

At the end of the day, I think the company’s Air Multiplier technology is not really suitable for air purifiers. Basically, if the fan draws “X” amount of air from the pedestal (and via the HEPA filter), it draws 15*X amount of air from the back of the air multiplier which doesn’t pass the filter at all. So at any point of time, only 6.66% of air thrown by the purifier is clean/has passed through the filter, compared to 100% for traditional purifiers.

All of this results in a lot of air flow in the (already very cold) room but very little purification. My impression of all this is that Dyson has over-engineered its purifiers for the simple purpose of purifying air. I feel terribly guilty for not buying 2 Xiaomi purifiers for the same price as this and still have cash left over.