Backing up your device means keeping a copy of your photos, documents, and other important files somewhere safe, separate from the device itself. It’s one of the most overlooked protections — valuable not just against a lost or broken device, but specifically against ransomware, a type of malware that locks your files and demands payment to unlock them. If your files are safely backed up elsewhere, a ransomware attack turns into a manageable inconvenience instead of a devastating loss.
Why Backups Matter for Security, Not Just Convenience
Most people think of backups as protection against a lost or broken phone — true, but there’s an equally important security angle: if malware ever encrypts or deletes your files, having a separate, recent backup means you can restore everything without paying a ransom or losing anything permanently. This is one of the most effective countermeasures against ransomware, precisely because it removes the leverage the whole attack depends on.
How to Back Up an iPhone
Option 1: iCloud Backup (automatic, cloud-based)
- Go to Settings, tap your name at the top, then iCloud
- Tap iCloud Backup
- Turn on Back Up This iPhone
Your phone will automatically back up daily when connected to Wi-Fi, plugged into power, and locked.
Option 2: Backup to a Computer (via cable, no subscription needed)
- Connect your iPhone to a Mac or PC using a cable
- On a Mac, open Finder and select your iPhone in the sidebar; on a PC, open iTunes
- Choose Back up now
How to Back Up an Android Phone
- Go to Settings
- Tap Google, then Backup (on some phones this is under Google > All services > Backup)
- Turn on backup, and confirm it’s syncing to your Google Account
Your phone will automatically back up photos, app data, contacts, and settings when it’s connected to Wi-Fi and idle while charging. Samsung phones also offer their own Samsung Cloud backup (under Settings > Accounts and backup), which additionally covers things Google’s backup doesn’t, like your home screen layout and Samsung Notes.
How to Back Up a Windows Computer
Option 1: OneDrive (built into Windows, cloud-based)
- Click the OneDrive icon in the taskbar (bottom-right corner), or search for OneDrive in the Start menu
- Sign in with a Microsoft account if you haven’t already
- Choose which folders to back up (Desktop, Documents, and Pictures are common defaults)
Files sync automatically to the cloud whenever you’re connected to the internet.
Option 2: File History (backup to an external drive)
- Connect an external hard drive to your computer
- Go to Settings > System > Storage > Advanced storage settings > Backup options (or search “Backup” in the Start menu)
- Turn on File History and select your external drive as the backup location
Windows will automatically back up your files to that drive on a regular schedule.
How to Back Up a Mac
Option 1: iCloud Drive (cloud-based)
- Click the Apple menu, then System Settings
- Click your name at the top, then iCloud
- Turn on iCloud Drive, and choose which folders to sync (Desktop and Documents are common)
Option 2: Time Machine (backup to an external drive)
- Connect an external hard drive to your Mac
- Go to System Settings > General > Time Machine
- Click Add Backup Disk and select your external drive
Your Mac will now automatically back up on a regular schedule.
Cloud Backup vs. External Drive: Which Should You Use?
Cloud backup (iCloud, Google’s backup, OneDrive) is the easiest to set up and maintains itself automatically without needing to remember to connect anything. It typically includes a limited amount of free storage, with paid plans available for more space.
External drive backup (Time Machine, File History) gives you a physical copy you control directly, without any ongoing subscription cost beyond the one-time price of the drive — but it needs the drive connected periodically to actually run.
The strongest approach uses both — a cloud backup for convenience and automatic protection, plus an occasional external drive backup as a second, independent copy. That way, even in the unlikely case one backup method fails or gets compromised, your files stay protected through the other.
A Simple Backup Habit to Build
Once your automatic backup’s set up, there’s little ongoing effort — but it’s worth periodically confirming it’s actually working:
Check that your cloud backup shows a recent date, not weeks or months old.
Using an external drive? Connect it every few weeks to trigger a fresh backup.
Test that you can actually access a backed-up file or photo, confirming the system’s functioning as expected.
The Bottom Line
Backing up your phone or computer takes just a few minutes to set up and then runs automatically in the background from there. Beyond protecting against a lost or broken device, a reliable backup is one of the most effective safeguards against ransomware — turning what could be a devastating loss into a simple, manageable restore.
Note: This article reflects backup features as of 2026. Exact menu names and steps vary by device and operating system version — refer to your device’s official support documentation for precise instructions.