A default is the setting or action your device chooses automatically if you don't pick something else

When you turn on a new phone, computer, or app for the first time, it comes with built-in choices already made for you. These pre-set options are called defaults. Your device uses them unless you change them. For example, a new browser might default to Google as its search engine, or your phone might default to storing photos in a specific folder. Defaults exist to get you working right away without having to configure everything from scratch.

Defaults appear everywhere in technology. Your email client has a default font and text size. Your operating system has a default printer. Your video player has a default volume level. Some defaults are helpful — they save you time. Others might not match what you actually want, which is why you can change most of them.

Key Takeaways

  • A default is any setting or action your device or app performs automatically unless you change it.
  • Manufacturers set defaults to get new users working immediately without configuration.
  • You can change most defaults through settings menus, though the location varies by device and software.
  • Resetting to factory defaults erases your personal settings and data, returning the device to its original state.
  • Some defaults are harder to change than others, and some apps make their defaults the only practical option.

Why devices come with defaults built in

A manufacturer cannot know what every person wants before they buy a device. Instead, they choose the most common preference or the safest option and make that the default. This means you can start using the device immediately. If you buy a laptop, it comes with a default web browser already selected. You can open it and browse the web without visiting settings first.

Defaults also protect users who never change them. A default privacy setting might be more restrictive than what's technically possible, because the manufacturer assumes that's safer for most people. A default backup schedule might run at night when most people aren't using their device, so it doesn't slow down daytime work.

How to find and change defaults on common devices

On Windows, defaults live in Settings. Open Settings, search for "default," and you'll find options for your default browser, printer, apps for different file types, and more. For example, if you want PDFs to open in a different program than the current default, you go to Settings > Apps > Default Apps and choose what opens each file type.

On Mac, defaults are scattered across System Preferences (or System Settings on newer versions). Right-click a file and select "Open With" to see alternatives, or go to System Settings > General > Default Web Browser to change your browser. Some Mac defaults are harder to find — you may need to open an app's own preferences menu instead.

On Android and iPhone, defaults work differently. When you first open a link or file, your phone asks which app you want to use. You can tap "Always" to make that your default, or change it later in Settings > Apps (Android) or Settings > [App Name] (iPhone). Some defaults, like your default messaging app, live in the main Settings menu.

In web browsers like Chrome, Firefox, or Safari, defaults are usually in the browser's own settings menu, not your operating system. Look for Preferences or Settings within the browser itself to change your default search engine, homepage, or download folder.

What "factory reset" or "factory default" means

A factory reset (also called a factory default or hard reset) erases everything on your device and returns it to the state it was in when it left the manufacturer. This includes all your files, photos, installed apps, and personal settings. The device goes back to having only the original apps and the original defaults.

Factory resets are useful when a device is running slowly, malfunctioning, or when you're selling or giving it away. They're also sometimes necessary to fix software problems that can't be solved any other way. However, they're destructive — you lose everything unless you've backed it up first. Before doing a factory reset, back up your data to cloud storage, an external drive, or your computer.

On most devices, factory reset is in Settings > System > Reset or Settings > General > Reset. The exact path depends on your device. The process usually takes 10 to 30 minutes and requires your device to be plugged in.

Defaults that are hard or impossible to change

Not all defaults are equally changeable. Some operating systems make it difficult to switch away from their built-in apps. On iPhone, you can now set a default browser and email app, but you cannot make a third-party app your default for some other functions. On Windows, Microsoft makes it easier to keep Edge as your browser than to switch to Chrome or Firefox, though you can still change it.

Some apps also set themselves as defaults in ways that are hard to undo. A newly installed app might ask permission to become your default for opening certain files, and if you tap "yes," changing it back requires going into settings and finding the right menu. Read permission requests carefully before accepting them.

When to change a default and when to leave it alone

Change a default if it's slowing you down or not matching how you work. If your device defaults to saving files to a folder you never use, change it to your preferred location. If your browser defaults to a search engine you don't like, switch to one you do. These changes take a few minutes and make your device more efficient.

Leave a default alone if you're not sure what it does or if changing it might break something. If you don't understand what a setting controls, search for its name online before changing it. Some defaults exist for technical reasons — changing them can cause problems if you don't know what you're doing.

If you change something and it makes things worse, you can usually change it back the same way you changed it forward. The exception is a factory reset — that one is hard to undo, so make sure you have a backup before you start.

Frequently Asked Questions

Can I change defaults back to what they were originally?

Yes, for most individual settings. If you changed your default browser and want to switch back, you can do it the same way you changed it the first time. The only exception is a factory reset — once you've done that, you cannot undo it without restoring from a backup.

What's the difference between a default and a preference?

A default is what your device does automatically if you don't choose something else. A preference is a choice you've made and saved. Once you change a default, it becomes your preference. The terms are often used interchangeably, but "default" usually refers to what came from the manufacturer.

Will changing my defaults slow down my device?

No. Changing which app opens a file type, or which search engine your browser uses, has no effect on speed. A factory reset might temporarily speed up an old device by removing clutter, but the effect usually fades as you reinstall apps and files.

Do I need to change defaults when I get a new device?

Only if the defaults don't match how you work. Many people use the defaults as-is and never change them. If you're happy with your browser, search engine, and file locations, there's no reason to change anything.