Gadget Hacks How-Tos

How To: Redial Busy Phone Lines Automatically on Your iPhone or Android Phone

Whether you're calling the unemployment office, a popular radio contest, or any other phone line that gets super busy, having to recall the number manually is a pain. Whatever you do, however, don't punch in the same digits over again and again — our smartphones can help do it for us, saving our time (and sanity).

How To: There's a Hidden Scientific Calculator on Your iPhone

The Calculator app on your iPhone may seem boring and basic, but there are a few interesting tricks worth knowing. You can ask Siri to perform calculations for you, long-press on results to copy them, long-press the field to paste numbers in, and swipe left or right above the keypad to delete digits one by one. The app can also be used as a scientific calculator with just a simple maneuver.

How To: Scan Any QR Code in Seconds with Your iPhone

A QR code is a fun and convenient way to link people to a website or app. On iOS, you have a few ways to scan these codes. You can download a QR scanner to get the job done, but Apple has one built into iOS. Or you can add the QR Code Reader tile in Control Center, but that's not even necessary. There's a better way, one that requires basically no effort to pull off.

How To: Use the Volume Buttons to Respring Your Buggy iPhone Without Having to Re-Jailbreak

Software issues occur more frequently on jailbroken iPhones, though, they're usually minor bugs that can be fixed easily with a respring. But if your device freezes up, restarting is the only way to get back to normal, which also means having to re-enable your jailbreak. There is one way, however, to respring without interacting with the touchscreen and having to re-jailbreak.

How To: Back Up & Restore Your Home Screen Layout & Icons on Any Samsung Galaxy

In the past, if you upgraded to a new Galaxy or if you had to factory reset your existing one to fix an issue, you had to restore your home screen layout manually. Your wallpaper, widgets, icon placement, and launcher settings were all dependent on you to be put back in their place. Thankfully, this isn't an issue anymore.

How To: Your iPhone's Screen Will Turn Off Faster if You Disable This Setting

Have you ever noticed that when you put your iPhone to sleep, it takes an extra second longer than it probably should for the screen to go black? It's a bit strange and forces you to wait another moment until your iPhone locks. But most of you can avoid the small delay entirely by just changing one setting.

How To: The Simple Way to Stop Your iPhone from Sending Unwanted Audio Messages

Your iPhone's audio messages may get you in trouble if they haven't done so already. It's way too easy for your iPhone to start recording without your knowledge, only to send a friend or family member a conversation you're having about them. (Awkward.) Luckily, protecting yourself takes only the flick of a switch.

How To: Use This Trick to Unlock Hidden Software Update Options on Your iPhone

The automatic software update setting on your iPhone is nice, but you may not always want to install new iOS versions blindly. New updates could contain bugs and vulnerabilities, and your favorite features may even disappear. With the auto-update option turned off, you can manually download and install updates, but there are also hidden options to be more specific about how you want to do it.

How To: Unlock On/Off Icons for Toggle Switches on Your iPhone

Apple's iOS doesn't have the best reputation when it comes to customization, but with every new iOS version we get, there are more options to personalize. Your iPhone comes packed with plenty of tweaks and hacks to make the device feel truly yours, and one of those is a fun yet useful mod that adds on and off icons for toggle switches on your iPhone.

How To: Share Your iPhone's Medical ID with First Responders When Placing an Emergency Call or Text

In the event of an emergency where you can't answer for yourself, trained professionals can view your Medical ID on your iPhone to learn about your medical situation, granted that you have created one. But that's not all your Medical ID can do. With a new feature, iOS can share your Medical ID data automatically with first responders when you place an emergency call.

How To: Enable Dark Mode in Facebook's iOS & Android Apps

Dark mode is simply a way of life these days now that both Android and iOS officially support it. Most major apps now use the system-wide setting on Android and iOS, and many had their own dark themes in-app before Google and Apple got with the program. But the social media giant Facebook took forever to implement a night theme, and some of you still may not be able to access it.

How To: Set Up Wireless Debugging on Android 11 to Send ADB Commands Without a USB Cable

From booting into Fastboot mode with a single command to installing mods without root access, there's no shortage of reasons to use ADB. The catch, though, you had to be tied to a computer with a USB connection. However, a new feature in Android 11 finally allows you to run ADB commands over Wi-Fi instead of being tethered.

How To: There's a Much Faster Way to Activate Dark Mode on Your iPhone

With iOS 13, Apple introduced system-wide dark mode for the first time on the iPhone, and there are several ways to activate it. You could use the brightness slider to change the theme, have Siri do it for you, or adjust it straight from the Settings app. But there's one way that's faster than all others so that you can switch from light to dark in no time.

How To: Burst Mode Missing on Your iPhone SE? Here's Where to Find It in the Camera App

If you need to capture a still image of some high-speed action, Burst mode is the way to go. Burst shots take photos in rapid succession, providing a range of pictures to choose from and ensuring that at least one great shot comes out of it. You might notice, however, that your new second-generation iPhone SE doesn't seem to sport Burst mode as your old iPhone did. Is it gone? Not at all.