Technologies

Here’s Why You Should Clear Your iPhone Cache

Why you should clear your iPhone cache and exactly how to do it in Chrome, Safari and Firefox.

Your iPhone is a handy pocket computer that lets you take the internet virtually anywhere you go, and just like every other piece of tech, it benefits from a little routine maintenance. Even browsing on the latest iPhone 14 Pro and Pro Max models might start to feel sluggish over time. Keep your iPhone’s browsers moving as fast as possible by clearing your cache every month — it only takes a few seconds.

Whether you use Chrome, Safari or other browsers on your iPhone, your cache builds up digital clutter over time. Clearing your cache gives the browser a new start, which can speed up your web surfing, even on iOS 16.4. (And if you’re trying to get your phone to run faster, try managing your iPhone’s storage.)

Your browser cache acts like a digital shortcut — it stores website data so your browser has a head start the next time you load up that page. In the short term, that helps speed up the process. But over time, the data stored in your cache can become outdated and no longer match what the site actually needs. If that happens, pages will load slower, and the formatting might be wrong.

That’s why clearing your cache can help: It gives sites a fresh start in your browser and frees up some space in your storage.

Website cookies are similar, except they store information about user data, rather than data on the website itself. Clearing your cookies gives you a chance to reset those preferences, which could improve your browsing experience. Note that clearing your cache and cookies will log you out of sites, which means you’ll have to log into them again and reset any preferences. But the upfront investment of that time can lead to a smoother experience down the road, and it can be a useful fix if you’ve recently changed settings that aren’t being applied properly.

Here are step-by-step guides on how to clear your cache on your iPhone based on the browser you use.

How to clear your iPhone cache in Safari

Safari is the default browser on iPhones, and you can clear your Safari cache in a few short steps. Starting with iOS 11, following this process will affect all devices signed in to your iCloud account. As a result, all your devices’ caches will be cleared, and you’ll need to sign in to everything the next time you use them. Here’s what to do.

1. Open the Settings app on your iPhone.

2. Select Safari from the list of apps.

3. Go to Clear History and Website Data.

4. Choose Clear History and Data in the pop-up box.

Then you’re set!

How to clear your iPhone cache in Chrome

It’s easy to clear your iPhone cache in Chrome.

James Martin/CNET

Chrome is another popular browser for iPhone users. The overall process for clearing your Chrome cache requires a few more steps, and you’ll need to do things through the Chrome browser itself. Here’s how.

1. Open the Chrome app.

2. Select the three dots in the bottom right to open more options.

3. Scroll across the top and select Settings.

4. Select Privacy and Security in the next menu.

5. Then select Clear Browsing Data to open up one last menu.

6. Select the intended time range at the top of the menu (anywhere from Last Hour to All Time).

7. Make sure that Cookies, Site Data is selected, along with Cached Images and Files. Finally, hit Clear Browsing Data at the bottom of the screen.

How to clear your iPhone cache in Firefox

If you’re a Firefox devotee, don’t worry. Clearing the cache on your iPhone is pretty straightforward. Just follow these steps.

1. Click the hamburger menu in the bottom right corner to open up options.

2. Choose Settings at the bottom of the menu.

3. Select Data Management in the Privacy section.

4. You can select Website Data to clear data for individual sites, or select Clear Private Data at the bottom of the screen to clear data from all selected fields.

What happens when you clear the cache?

Clearing your cache removes the website data your phone stored locally to prevent having to download that data upon each new visit. The data in your cache builds over time and can end up slowing things down if it becomes too bulky or out of date. (My phone had about 150MB of data stored in Chrome when I checked.) Clearing that data gives sites a fresh start, which may fix some loading errors and speed up your browser. However, clearing your cache also signs you out of pages, so be prepared to sign in to everything again.

How often do I need to clear my cache?

Most people only need to clear their caches once every month or two. That’s generally the point when your browser will build up a cache large enough to start slowing things down. If you frequent a large number of sites, you should err on the side of clearing your cache more often.

For more, check out how to download iOS 16 today, the best new iOS 16.3 features and some hidden iOS 16 features. You can also take a look at how each new iPhone 14 model compares to the others.

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How to Tell if Someone Else’s Apple AirTag Is Tracking You

These settings can help make sure your iPhone alerts you to unwanted location trackers.

The biggest benefit of Apple’s AirTags is that they help you find your belongings, whether you’re looking for lost keys or keeping track of your luggage while traveling. But AirTags can also be used to track you without your knowledge.

AirTags work by combining built-in sensors, wireless signals and Apple’s wide Find My network to let you keep tabs on your valuables. If you ever lose your wallet with an AirTag inside, for example, you can use the Find My app to locate it on a map, have it play a sound to help you find it nearby, or mark it as «lost,» which allows other Find My users to help you find it.

One of the biggest complaints about AirTags, however, is that someone with malicious intent could easily slip one of the tiny tags into your bag and then track your movements without your consent. Multiple people have reported AirTag-related stalking incidents where the victims didn’t know the trackers were placed on them until much later.

Apple and Google (Android users have their own choice of Bluetooth trackers, such as the Moto Tag, which works with Google’s Find Hub) have since collaborated on an industry standard that alerts the user if a device is being used to track them without their knowledge. Thanks to this collaboration, Android users will be able to know if an AirTag is being used to track them, too.

Apple, for its part, has also made some changes in the past few years that improve the ability to detect an unwanted AirTag. In the initial rollout, an AirTag would make a sound three days after it’s separated from its paired device. Now, that duration is 8 to 24 hours. If you have unwanted tracking notifications enabled (which we’ll get to below), you’ll receive an audible alert.

We should note here that the new AirTag is 50% louder than the first-generation model, and would therefore be theoretically better at alerting you to the unwanted AirTag. Apple has also said that the speaker on the second-gen AirTag is harder to remove than on the first-gen model, in case bad actors try to remove it.

Detecting unwanted trackers

To be able to detect unwanted trackers, first enable unwanted-tracking notifications. For AirTags or other Find My accessories, these pop-up notifications (e.g., «AirTag found moving with you») are available on devices with iOS 14.5 or later. For other Bluetooth tracking devices, these notifications are enabled on iOS 17.5 or later.

You should enable Location Services, Find My iPhone, Bluetooth and Allow Notifications. Here’s how:

Head to Settings, then Privacy & Security, then Location Services and toggle it on.
After that, head to Settings, then Apple Account, select Find My and turn Find My iPhone on.
To enable Bluetooth, go to Settings, then Bluetooth and turn that on.
Then go to Settings, then Notifications, scroll down to Tracking Notifications and toggle on Allow Notifications. Make sure airplane mode is off, or you won’t receive tracking notifications.

What to do when you get the tracking notification

If you do get a notification like «Unknown tracker alert» or «Item detected near you,» you can try to find the unwanted AirTag by tapping it. Tap continue and then tap Play Sound or tap Find Nearby to locate the AirTag in question.

If it doesn’t play a sound or you’re unable to find it, the item may no longer be on your person. Apple suggests checking your other belongings or the area around you, just in case. If you want to review the notification at a later time, you can open the Find My app, tap Items and then tap Items Detected With You.

Be aware that there are often «false positives,» when notifications are triggered when someone nearby has a tracker on them. If you’re traveling on a train, plane or bus, waiting in line or seated in a public space, a mistaken tracking alert could stem from glitches or high-density Bluetooth environments.

If you get an alert, though, it’s always a good idea to take it seriously and investigate what might be causing it.

If you do find an AirTag that doesn’t belong to you, hold the top of your iPhone near the tracker until you see a notification. Tap it, and this will launch a website that provides information like its serial number, the last four digits of the phone number or a blurred-out email address of its owner. If the AirTag is marked as «lost,» you may see a message with instructions on how to contact them.

If you’re concerned that the tracker is being used to monitor your movements and location, Apple advises taking a screenshot of the information above for your records. You can then disable the AirTag by pressing down on the back of the AirTag, turning it counterclockwise to remove the cover and removing the battery.

Of course, before making any of these changes, it’s important to come up with a safety plan, especially if you’re afraid you’re being tracked by a current or former abusive partner. Contact your local law enforcement if you feel like your safety is at risk, or the National Domestic Violence Hotline 800-799-SAFE (7233).