Key Takeaways
- Backing up your data before wiping a device prevents permanent loss of photos, contacts, and files.
- Signing out of all accounts — especially Apple ID or Google — is essential before factory resetting.
- A factory reset alone may not fully protect data; encryption adds a meaningful extra layer on older devices.
- Deauthorising streaming and app store accounts prevents the next owner from accessing your purchases.
- Removing SIM and SD cards is a simple step that's easy to overlook.
Summary
18 items · 30–90 minutes depending on device type and number of accounts
Why This Step Matters More Than Most People Realise
Selling or donating an old phone, tablet, or laptop feels simple — but the personal data stored on those devices is anything but trivial. Modern devices hold saved passwords, payment credentials, email histories, location data, and account access that can persist through an improperly executed reset. Understanding what's at stake helps explain why each item on this checklist exists.
For a broader look at what data your phone generates and who can access it, see our article on what carriers and apps collect from your mobile device. The same awareness applies when handing the device to anyone new.
Verify Your Backup Before You Wipe
Once you factory reset a device, recovering data from it is extremely difficult without professional tools — and often impossible. Before you begin the reset process, open your cloud backup or external drive and confirm your most important files are actually there. Checking a backup takes two minutes; regretting a missing photo library takes much longer.
This checklist applies to smartphones, tablets, laptops, and most smart home hubs with local storage. Work through it in order — the sequence matters, because wiping the device before backing up means losing your data permanently.
Tools You'll Need
Before you start, gather what you'll need to complete the process smoothly. Having these ready avoids interruptions mid-way through.
Cloud Backup Service (iCloud, Google One, or OneDrive)
Used to back up photos, contacts, and app data before wiping the device.
External Hard Drive or USB Drive
An alternative backup location for large media files if cloud storage is limited.
SIM Eject Tool or Paperclip
Used to open the SIM tray and remove the SIM card safely.
Microfibre Cloth
For cleaning the screen and body of the device before handoff.
The Full Checklist
Work through each group in order. The backup and sign-out steps must happen before you reset — reversing that order is the most common mistake people make.
Back Up Your Data
Sign Out of Accounts and Deauthorise
Remove Physical Components
Wipe and Reset the Device
Prepare for the Next Owner
Don't Skip Signing Out of Your Apple ID or Google Account
If you factory reset a device without signing out of your Apple ID or Google account first, the device may be locked to your credentials — making it unusable for the next owner. On iPhones and iPads, this is called Activation Lock; on Android, it's called Factory Reset Protection. Both are designed as anti-theft measures, but they will frustrate anyone who receives your device if not disabled beforehand. Sign out from Settings before you reset.
A Factory Reset Isn't Always Enough on Older Devices
On older Android devices — generally those manufactured before 2015 — a factory reset may not fully overwrite stored data, making some files potentially recoverable with forensic tools. Enabling encryption before performing the reset significantly reduces this risk by scrambling the data first. Modern iPhones and most current Android phones encrypt data by default, so this concern applies mainly to legacy hardware.
After the Reset: A Few Final Checks
Once the device shows the initial setup screen, power it off without completing setup. This confirms the wipe succeeded and that no personal account is attached. If the device asks for a previous owner's credentials during startup, something was missed — go back and sign out of the relevant account from another device using that account's web portal.
If you're planning to upgrade rather than just hand off the old device, our guide on weighing a phone upgrade without overpaying walks through trade-in value and other factors worth considering before you commit.
For laptops, also confirm that any local user accounts have been removed and that the operating system is not linked to a Microsoft or Apple account that wasn't disconnected. Windows and macOS both provide dedicated 'Reset this PC' and 'Erase All Content and Settings' options that handle most of this automatically — but only after you've signed out of your account first.
Taking 30 to 90 minutes now saves you from a much harder conversation later if sensitive information surfaces after the device changes hands.