手機真的在監聽嗎？在公共場合充電可能被駭？前Apple技術人員破解手機迷思｜科普長知識｜GQ Taiwan

have you ever asked yourself is my phone listening to me is my phone watching me does my phone track me even when it's off maybe the real question is does it even need to here to set the record straight I'm David Payette former Apple Store Tech and smartphone expert this is Tech truths are our phones listening to us the simple answer is yes but not in the way you would expect if you want to rest easy the amount of battery life our phones would use if they listened to everything you said all the time would drain its battery very fast let's use this iPhone 14 pro as an example in the case of hey Siri the first sounds it listens for is not hey it's it isn't transcribing your words or entire sentences it's not nearly powerful enough for that instead it's listening for a specific sequence of sounds which is called an acoustic model the takeaway is that your phone is absolutely listening to you but it can only recognize one thing hey Siri kind of like my cats whatever I say food the phone's main processor is a lot more powerful than it's always on processor but that power comes at a cost battery life so it's the always-on processor that always listens for trigger sounds when the always-on processor hears an S sound it triggers a kind of built-in checklist was the S preceded by a high front vowel like a was it followed by another front vowel like e if all the boxes get checked the always on processor wakes up the a16 bionic help now that the phone's main processor is involved the possibilities for analyzing your voice are endless of these four companies Apple's privacy policy for Siri is by far the clearest and the safest at least in terms of your personal privacy so what can you do to protect your privacy as much as possible if you go to the settings app on your phone and disable hey Siri hey Google or hi Bixby then none of this happens at all are our phones watching us no and they don't have to social media companies can all infer our emotions and our reactions based on our behavior and what about Tick Tock they've been all over the news lately Tick Tock collects both face prints and voice prints from content that you upload to their servers doesn't sound great but it gets worse Tick Tock uses pre-uploading to send photos and videos from your phone to their servers even before you choose to share it publicly from tick tock's privacy policy we may collect biometric identifiers and biometric information as defined under U.S laws such as face prints and voice prints from your user content where required by law we will seek any required permissions from you prior to any such collection they'll ask our permission to do it but only if they're legally required to that doesn't exactly make me feel better do our phones track US even when they're off there's no right or wrong answer to this one does your phone ever really turn somebody's door phones ever really turn all the way off the answer to that question is no the always-on processor stays running in the background even when your phone's operating system isn't but that doesn't necessarily mean you could be tracked on iPhones find my works even when your phone is powered off but it's not your phone that's tracking you all the other Apple devices that are part of the find my network can locate your device and report its location to Apple servers Androids are a different story you can find a Samsung Galaxy phone when it's offline meaning cellular data or Wi-Fi are turned off but not if the phone itself is turned all the way off Google's find my device feature is one step further behind that you might be able to find your phone's last known location but you won't be able to see any live location if it isn't connected to the internet if you want to not be findable you could disable find my when you power off your phone first press the side button and either volume button to slide the power off appear years on the screen then tap the tiny text below the slider that says iPhone findable after power off then tap temporarily turn on finding enter your passcode and power off your phone alright time for Rapid Fire Let's Go does your phone get better service depending on how you hold it no antenna gate is over and it's been over since the iPhone 4. does your phone ruin credit cards or hotel room keys your phone by itself no it does create some magnetic fields but they're not strong enough to demagnetize a credit card magsafe and other magnetic Chargers and cases however are a different story never put a credit card in between your phone and a magsafe case or it will demagnetize will it magnet wipe your phone nope this one is a myth magnets used to be uh oh okay uh do phones attract lightning no but if you're on top of a mountain holding an umbrella taking a selfie and you get zapped don't blame your phone is it safe to hold your phone while you're pumping gas yes MythBusters already covered that one can your phone be hacked on public Wi-Fi or by plugging it into random usb chargers yes but in different ways public Wi-Fi networks are often unsecured meaning that any device that's also connected to it may be able to intercept your data or see what websites you're visiting using an attack called a man in the middle attack plugging your phone into public usb chargers is it a good idea either but phone manufacturers have been making it easier to protect against this kind of hack the reason public charges are so dangerous is that your phone's charging port is also used for data transfers you might see a charging port but a tiny computer might be lurking beneath the surface on iPhones a trust this device pop-up appears whenever you plug it into a device that tries to access data on your phone on Android hello on Androids I told you on Androids the pop-up might say something else like enable USB file transfer that pop-up never happens when you plug your phone into a charger that's just a charger if you see that kind of pop-up when you plug in your phone don't trust it and find another charger right away is airplane mode really necessary in theory radio frequency interference from cell phones could affect certain airplane systems in practice it's not just improbable it's likely impossible there are a few reasons for this first airplane systems and modern planes are hardened against RFI there has never been an airplane crash due to cell phone interference I've always thought the real reason for airplane mode wasn't about safety it's about Wireless carriers as we travel our cell phones get handed off from Tower to Tower to Tower if you have airplanes full of hundreds of phones zipping by these towers at hundreds of miles an hour that's a lot of handing off for cell phone carriers to do the European Union recently made the decision to allow 5G on their planes along with previous mobile technology Generations like 4G so this means airplane mode is about to become a thing of the past at least in the EU what about flights in the U.S you ask not a peep from the FAA so far airplane mode isn't going anywhere yet does dark mode actually help your eyesight I'm not a doctor but my opinion is yes in certain circumstances and especially since OLED displays became mainstream maybe you're thinking okay nerd why is OLED or organic light emitting diode such a big deal it's easiest if I show you both these phones are showing an image of some white text on a black background but one of the backgrounds isn't really black is it it's more of a glowing blue the big deal with OLED is that instead of your phone's backlight lighting up the entire screen now the black pixels are just off not only does it increase contrast and make your phone easier to look at no backlight means longer battery life dark mode and OLED displays helps your eyesight more the dark mode on older LCD screens is planned obsolescence real I think so but tech companies are sneaky about it today's phones have amazingly powerful Hardware but one of the things people complain about is that once we upgrade our phones to the latest version of the operating system we can never go back to an older one and the result is that over time new features mean our phones get slower usually iPhones support about five years of the latest versions of iOS for instance iOS 16 which came out in September 2022 is reported on phones as old as the iPhone 10 and the iPhone 8. both of which were released in 2017. Androids however are a different story whether or not you could downgrade the software on your Android phone depends entirely on the phone manufacturer and model of phone you have whether or not you should downgrade your Android is a different story you could expose your phone to a software vulnerability that had been patched or void your warranty so how often should we be updating our phones my advice is to always update to the latest version of the operating system unless your phone is the oldest model supported by the newest operating system how waterproof are our phones really basically phones are about as water resistant as they need to be Apple and Samsung love to talk about various phones IP ratings an English protection rating is composed of two digits the first digit which could be zero through six represents the degree of protection against solids like dust and dirt the second number which could be 0 0-9 represents a phone's degree of protection against liquids IP67 is clearly defined you can have your phone underwater for 30 minutes at up to one meter deep or it's about three feet and ip68 can mean very different things for different phones but they're all rated ip68 what about ip69 readings do we need that not unless you're power washing your phone but there's a catch our phones are water resistant not soapy water resistant over time exposure to other liquids can slowly break down the waterproof seals inside your phone so be careful the next time you're in the shower shampoo your hair but not your phone does closing apps really enhance your phone's performance I think we can all agree that the science performance has gone downhill but we might not all agree on my response to this question companies like Apple and Samsung put a lot of effort into building an operating system that manages memory very efficiently and minimizes the amount of Battery apps used when they're not on the screen that is absolutely true the second point they make is that you're actually wasting phone battery life if you close out your apps because it takes more battery to start an app up from scratch than it does to restore it from the background sleep state that is also true but there's one very important and fairly obvious thing the experts often leave out apps don't always do what they're supposed to otherwise why would Apple have an article about what to do with unresponsive apps when something goes wrong with an app and it happens a lot it can rev your phone's processor all the way up to 100 and get stuck there and that drains your battery life my opinion is that it's a good idea to close out your apps at the end of the day just to be safe or whenever you notice your phone battery draining faster or getting hotter than normal what's the deal with exploding phone batteries inside every phone repair shop there's one very important very low-tech piece of technology a fire safe or at least there should be every new technician is told that if a phone battery starts to leak or Sizzle or smoke to throw it in the fire safe and shut the door Lithium-ion batteries don't usually explode at least not in the traditional sense when they're damaged or they're short circuit the chemicals inside react poorly they smoke or they bubble and sometimes they do catch on fire usually though there are warning signs phones rarely go up in Flames but if no one's around to notice the problem that's where the real danger occurs and that's why it's not the best idea to put Lithium-ion batteries in your checked baggage on an airplane if your phone is so hot it feels like it's going to catch on fire turn it off if you can and then set it aside until it cools down what's the best way to charge our phones Lithium-ion batteries are much smarter than older nickel cadmium or nickel metal hydride rechargeable batteries the smart technology built into our phones is designed to help maximize the battery's lifespan the zero to 100 charge level you see on your phone doesn't represent the battery's actual minimum or maximum capacity it's kind of like the gas gauge on your car you can fill it up past F and when you hit e there's still a little bit of gas left in the tank 100 of your phone is the maximum capacity it can be charged to without over charging which could damage the battery on the other hand zero percent is the minimum amount of charge your phone could be recharged from with lithium ion batteries if they run completely out of juice they never work again if you're going to store your phone for a long period of time leave it charged to around 50 percent to maximize its lifespan how often should you turn off your phone I like to say once a week not only will it help you maximize your phone's performance it'll also help you save some battery life um I missed a cable how often do you really need to clean your phone's screen according to Charles Gerber a microbiologist at the University of Arizona cell phones have about 10 times as many bacteria as the average toilet seat incidentally toilet seats aren't really even that bad it's those remote control it's those remote controls and doorknobs you need to watch out for scientists say it's not our germs that get us sick it's other people's germs so I think the answer to how often you should clean your phone depends on how often you're handing it to other people if you're going to visit your grandparents to show them photos it might be a good idea to sanitize your phone first well we may never know everything going on behind the scenes of the world of tech with a little digging there's a lot of intriguing and alarming information to discover until next time I'm David Payette and this was Tech trips

Channel: GQ Taiwan

Views: 528,393

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Id: QidAal-Olq8

Length: 14min 41sec (881 seconds)

Published: Sat May 20 2023